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Rezultatele pentru profiled steel sheetRezultate gasite: 70
Research on the impact induced in the environment by milk processing Industry case study: S.C. Raraul ltd. Campulung, Suceava county
Environmental Engineering and Management Journal › Vol. 6 › Nr. 3 The paper presents some investigations and assessments on the impact induced in the environment by a milk processing unit which makes a variety of products. The balance sheets for raw materials were elaborated for all the activities carried on the location; based on these, the synthetic indexes of the impact on the environment were drawn, as well as the specific factors: the extent of the usage of raw material, materials and specific effluents.... Autori: Adriana Ilisoi, , Letitia Cezar, Mihai Nicu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25131
Environmental Engineering and Management Journal, Vol. 3 Nr. 4
Environmental Engineering and Management Journal › Vol. 3 › Nr. 4 Contain all the articles from this issueICEEM /02 PLENARY SESSION:"Environmental Engineering and Management in the Context of Sustainable Development"Design for sustainability (D4S): towards advanced product conceptsHan Brezet, Sacha SilvesterICEEM/02 - ENVIRONMENTAL ENGINEERING SECTION"Water and Wastewater Treatment Technologies"Complex approach to the problem of persistent organic pollutants degradation in water environmentVictor Covaliov, Olga Covaliova, Angela Cincilei, Gilles Mailhot, Pasca... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25176
Environmental Engineering and Management Journal, Vol. 4 Nr.1
Environmental Engineering and Management Journal › Vol. 4 › Nr. 1 Contain all the articles from this issueBiosorption of Cu2+ ions from aqueous solution by Enteromorpha sp.Loredana Brinza, Matthew Dring, Maria Gavrilescu Environmental impact assessment for steel processingBrindusa Robu, Carmen Zaharia, Matei MacoveanuEnhanced primary treatment of municipal wastewater by ion exchange and membrane processesDaniela Teleman, Peter A. Wilderer, Carmen Teodosiu, Thilo K?¶tzle Best practices in kraft pulping - benefits and costs Dan GavrilescuAspects of waste m... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25177
Environmental Engineering and Management Journal, Vol. 7 Nr. 1
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 Include urmatoarele articole:â€? "Waste not, want not" a study of household attitude toward recycling of solid wastesâ€? A kinetic model for the crystal violet mineralization in water by the electro- fenton processâ€? Development of a coagulation/flocculation predictive model for turbidity removal from tehran water treatment plantsâ€? Removal of cadmium (II) from aqueous solutions by sphagnum moss peat: Equilibrium studyâ€? Environmental sustainability based on fuzzy modelsâ€? Impact of dust emi... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25207
Corrosion behavior of some low-carbon steels in organic environment in the presence of succinic and adipic acids
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe behaviour of three types of steel, with a variable carbon concentration (from 0.20 to 0.40 %) is studied in medium of ethylene glycol - 10 % methanol - 5 % succinic or adipic acid with water concentration varying between 1 % to 5 %. IR spectroscopy, Xray diffraction and chemical analysis were the methods used for corrosion compounds analysis. The weight losses were measured; also the polarization curves were plotted and the corrosion parameters were established. Based on the obtained... Autori: Daniel Mareci, Daniel Sutiman, Ioan Iordache, Mircea Teodor Nechita ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25240
Low-carbon steels corrosion in water-contaminated organic mixtures of adipic acid and methanol
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 AbstractThe corrosion resistance of three types of low-carbon steels in water-contaminated mixtures of adipic acid and methanol was investigated. The concentration of water in the organic mixture was progressively raised from 1% to 5%, while the carbon concentration in the steel samples varied from 2% to 4%. Infrared spectroscopy (IR) and X-ray diffraction (XRD) were used to investigate the insoluble corrosion products. Based on the weight losses measurements, on the polarization curves and on t... Autori: Adrian Cailean, Daniel Mareci, Daniel Sutiman, Mircea Teodor Nechita ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25287
Environmental Engineering and Management Journal, Vol. 7 Nr. 4
Environmental Engineering and Management Journal › Vol. 7 › Nr. 4 Include urmatoarele articole:â€? Removal of nickel from aqueous solution by Nordmann FIR (ABIES Nordmanniana (STEV.) SPACH SUBSP. Nordmanniana) conesâ€? Determination of heavy metals in extracts and macerates from garden flowersâ€? Biological phosphorus removal in a high performance single reactor â€? Advanced Cd2+ removal on dispersed TioO2-fly ash â€? Remediation techniques for contaminated soilsâ€? Separation of uranium(vi) from soils by extraction in aqueous PEG (1550) - Na2SO4 - Na2CO3 two-... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25296
Studies on equipment corrosion in catalytic reformation of C1 - C5 fraction
Environmental Engineering and Management Journal › Vol. 7 › Nr. 6 AbstractObservations and data regarding the intense corrosion and deposit phenomena of the carbon steel tube bundle of the heat exchanger are presented. The bundle ensures the cooling of the light fraction C1 - C5 from the top of the distillation column which carries out the removal of pentane and smaller derivates into the RC equipment. Chemical and mineralogical analyses confirm the aggressive action of the fluids flowing through the exchanger. Tests have been done in order to replace the carb... Autori: Ana-Daniela Georgescu, Lucian Georgescu, Maria Apostolescu, Nicolae Apostolescu, Ovidiu Georgescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25333
Hydrodynamic modelling of pollution with LNAPL generated by waste dump from metal working industry
Environmental Engineering and Management Journal › Vol. 8 › Nr. 1 AbstractIn the present article, some models conceptually and mathematically applicable to the LNAPL transitory transport process through ground water were discussed. Subsequently, by using a personal computer program of pre-processing basis data combined with MOVER 2.0, the levigation process of oily dross/scale stored in the waste dump, which produces steel rolled tubes, was numerically simulated, in adequate scenarios. The results of the simulations will be useful at the evaluation of the impa... Autori: Elena Doinita Carlig, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25361
Environmental Engineering and Management Journal, Vol. 8 Nr. 3
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 â€? Bioremediation of contaminated air using a bioscrubberâ€? Quality risk evaluation of the groundwater resources on the moldavian areaâ€? Electrochemical characterization of some dental materials in accelerated environmental testingâ€? Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farmâ€? The environmental impact assessment caused by the dykes failureâ€? Revaluation of beer industry byproducts – medical implicationsâ€? ... Autori: http://www.ecozone.ro/reviste.php?RID=25372
Environmental Engineering and Management Journal, Vol. 8 Nr. 4
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25373
Environmental Engineering and Management Journal, Vol. 8 Nr. 5
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 â€? Photocatalytic properties of titania - fly ash thin filmsâ€? Study of the viscosity of some biodiesel – diesel oil blendsâ€? Aspects refering to technical and leaching properties of the secondary aluminium slags - cement compositesâ€? Studies regarding phenol and 4-chlorophenol sorption by surfactant modified zeolitesâ€? Cu-Ni nanostructured electrocatalysts obtained by electrocodepositionâ€? Molecularly imprinted poly (vinyl alcohol) films for the selective absorption of glycyrrhizinic ac... Autori: http://www.ecozone.ro/reviste.php?RID=25374
Materials processing using solar energy
Environmental Engineering and Management Journal › Vol. 8 › Nr. 2 AbstractThe main aspects refer to metals and refractory materials behaviour, at high temperature, to materials purifying and to achieve some chemical syntheses.The main technological parameter of the heating is temperature, heating obtained by focusing Sun's rays. The heating can be used inside the furnace to produce metallic material into a crucible, without any complementary power source.For the future, a bigger interest presents some other metals melting, more expensive than steel, such as ti... Autori: Petrica Vizureanu, Cornel Samoila, Daniel Cotfas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25387
Researches on possibility to recover and reuse the Iron(II) sulphate from etching of rolled steels
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The etching of iron materials in sulphuric acid solutions allows the dissolution of the iron oxides with formation of iron sulphates. The relatively low solubility of the formed sulphates imposes their separation for avoiding the contamination of the etching bath, as well as for preventing the environmental pollution through the wastewater. Within the flow sheet of the processing of the hot or cold rolled steel, a stage of separation by crystallization of iron sulphate is foreseen. T... Autori: Liliana Lazar, Ion Balasanian, Florin Bandrabur ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25415
Options for the valorization by recirculation of powder material for steel manufacture in EAF
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
This paper aims to propose a new solution for rational valorization of the secondary powder materials from steel makingin electric arc furnaces. The elaborated steel quality as well as the economical advantages represented by secondary powdermaterials recirculation were studied. A good correlation between the proportion of brickets loaded into the melt and the melting ofcarbon has been found. The proportion of the EAF dust brickets can grow even at 5-7%. Zinc presence could havenegat... Autori: Mirela Gabriela Sohaciu, Avram Nicolae, Cristian Predescu, Stefan Velicu, Gheorghe Gh. Calea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25438
Opportunities for valorization of steel slags
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Using slag in steel making represents a challenge for road construction industry and decreasing environment interactions also.Steel making slag wit granulations of < 10 mm, which today have not a sure solution, represents the research object. The technological research solutions have aimed reducing CaO free content in these slugs, and reducing slug fraction with granulationof ... Autori: Florian Zaman, Mirela Gabriela Sohaciu, Ecaterina Matei, Cristian Predescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25439
Trends in selective collection of the household waste
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
The paper presents actual trends concerning the selective collection of the household waste. The collecting methods used in the EU countries and the results obtained by the Romanian municipalities in the last two years are also exposed. The results show thedynamics of household collection and the expectations for the next years. It is known that a town of 100 000 inhabitants collecting 100% of its household recyclable packaging waste could recycle 780 tonnes of steel, 200 tonnes of a... Autori: Liana Baltes, Camelia Draghici, Camelia Manea, Dan Ceausescu, Mircea Tierean ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25440
Mannich basis - Corrosion inhibitors in saline water
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
This paper presents the corrosion processes of steel samples with different composition, in aggressive corrosion solutions containing chloride ions. The inhibition capacity of two new Mannich basis: 2-aceto-4-morpholylmetyl-1-naphtol (BM1) and 1- (2'-hydroxynaphtyl)-3-(4-morpholyl)-1-propanone (BM2) was tested and compared. The corrosion tests were done in a potentiostatic installation and, based on the polarization curves, the Tafel plots were obtained. The kinetic and thermodynamic... Autori: Ileana Manciulea, Cristina Bogatu, Eugenia Comanita, Anca Duta, Lucia Dumitrescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25459
Wastes used in obtaining polymer composite
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
In the paper is analyzed the possibility of using some industrial wastes for obtaining new building materials. From the industry or from the power station a lot of by-products or wastes have resulted and their storage is a big problem for the environment. In the building material industry a part of these wastes can be used in different ways: for replacing the cement, as addition in concrete, as component of cements, in the mixture of polymer concrete, etc.
In the present investigati... Autori: Marinela Bărbuţă, Nicolae Taranu, Maria Harja ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25525
A new technology to obtain ecological steels
Environmental Engineering and Management Journal › Vol. 8 › Nr. 5 Abstract
A friendly technology with the environment which consists of the elaboration of carbon steels through specific proceedings to powder metallurgy has in view the contribution of methane gas in iron powders at the same time with sintering. This technology is advantageous from various points of view: the final product is a part which does not need afterward processing with solid waste result and therefore the specific energy consume is lower, the wear and corrosion behavior is similar to... Autori: Olimpia Ghermec, Cristian Ghermec, Traian Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25526
The treatment and minimization of metallurgical slag as waste
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The slags are an important waste and by-products of metallurgical industry. The present paper summarizes results obtained from physical and chemical analyses on metallurgical slag provided from S.C. ?Mittal Steel Galati? S.A. The physical structure and gradation of granulated slag depend on the chemical composition of the slag, its temperature at the time of water quenching, and the method of production. The following mineralogical components were noticed through bypowder X-ray diffr... Autori: Maria Cioroi, Licuta Nistor Cristea, Igor Creţescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25588
Analysis of factors determining the behaviour of chromium in some romanian soils
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Chromium (Cr) is one of the most common metal contaminants in soil because of its use in ore refining, production of steel and alloys, metal plating, tanneries, wood preservation, and pigmentation. In soil environment, the most stable oxidation states of chromium are Cr (III) and Cr (VI). While Cr (III) is considered an essential trace element for the functioning of living organisms, Cr (VI) is toxic and carcinogenic to humans via inhalation for long exposures, since it is easily sol... Autori: Dumitru Bulgariu, Laura Bulgariu, Maria Gavrilescu, Raluca Maria Hlihor, Vasile Lucian Pavel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25590
Environmental Engineering and Management Journal, Vol. 9 Nr. 6
Environmental Engineering and Management Journal › Vol. 9 › Nr. 6 ? RESEARCH ON NaCl SALINE AEROSOLS I. NATURAL AND ARTIFICIAL SOURCES AND THEIR IMPLICATIONS
? DECISION SUPPORT MODELS FOR SOLID WASTE MANAGEMENT ? AN OVERVIEW
? POLICY AND STRATEGY FOR IMPROVING SUSTAINABLE SOCIAL DEVELOPMENT PROGRAMMES
? APPLICATION
OF SHALLOW POND SYSTEM USING WATER HYACINTH FOR DOMESTIC WASTEWATER
TREATMENT IN THE PRESENCE OF HIGH TOTAL DISSOLVED SOLIDS (TDS) AND HEAVY
METAL SALTS
? TRENDS OF THE COMMUNITARIAN COHESION POLICIES AND ADVERTISING FOR EC... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25658
Environmental Engineering and Management Journal, Vol. 9 Nr. 7
Environmental Engineering and Management Journal › Vol. 9 › Nr. 7 ? MUNICIPAL SOLID WASTE LANDFILLING AND TREATMENT OF RESULTING LIQUID EFFLUENTS
? ROMANIA: ENTREPRENEURIAL VALUES AND SUSTAINABILITY
? THE COMPRESSIVE STRENGTH OF WOODEN BRIQUETTES USED AS RENEWABLE FUEL
? ECO-FRIENDLY EXTRACTION AND SEPARATION METHODS OF CAPSAICINES
? ADDRESSING ISSUES OF GEOENVIRONMENTAL RISKS IN DOBRUJA, ROMANIA/BULGARIA
? ADSORPTION OF 2,4-DINITROPHENOL AND 2,6-DINITROPHENOL ONTO ORGANOCLAYS AND INORGANIC-ORGANIC PILLARED CLAYS
? APPLICATION
O... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25659
Environmental Engineering and Management Journal, Vol. 9 Nr. 8
Environmental Engineering and Management Journal › Vol. 9 › Nr. 8 ? GREEN SYNTHESIS OF SYMMETRICAL CARBONATE FT-IR STUDY
? SINTERED BASALT AS A PROMISING SUSTAINABLE MATERIAL IN MECHANICAL ENGINEERING
? DESIGN OF BUILDINGS INCLUDING ENVIRONMENTAL IMPACT
? ANALYSIS METHODS FOR PYRAZINE-2,3-DICARBOXYLIC ACID SYNTHESIZED USING ELECTROCHEMICALLY REGENERATED KMnO4
? RESEARCH ON NaCl SALINE AEROSOLS II. NEW ARTIFICIAL HALOCHAMBER CHARACTERISTICS
? DETERMINATION OF AEROSOLS POLLUTANTS ON MEMBRANES. 1. MEMBRANES PREPARATION AND CHARACTERIZATIO... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25660
EXPERIMENTAL RESEARCH ON TRANSIENT REGIMES OF SOLAR AIR HEAT COLLECTORS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:The operation of solar air heat collectors consists in a sequence of transient regimes, being conditioned by the availability in timeof the solar resource. This paper presents the results of an experimental research on transient regimes of two types of solar air heatcollectors. The absorbers of the collectors have different configurations and are made of different materials. One collector is acommercial passage air collector with the absorber made of aluminum. The other collector is an ... Autori: Adrian Ciocănea, Andrei Dragomirescu, Sanda Budea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25731
CORROSION INHIBITION IN SALINE ENVIRONMENT USING KETONIC MANNICH BASE FROM ortho-HYDROXYACETOPHENONE
Environmental Engineering and Management Journal › Vol. 10 › Nr. 9 Abstract:The paper presents the results obtained when using one ketonic Mannich base BM (1-(2’-hydroxyphenyl)-3-(1-piperidinylamino)propan-1-one hydrochloride) as corrosion inhibitor in saline environment, for different types of carbon steels,with various alloying elements. The Mannich base was synthesized and used in corrosion experiments, in concentrations varyingfrom 0….1300 ppm. The corrosion experiments were performed by potentiodynamic polarization studies, with 50 mVs-1 scanrate. The ... Autori: Andreea Milea, Cristina Bogatu, Ileana Manciulea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25754
HSLA STEEL AND CAST IRON CORROSION IN NATURAL SEAWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 The corrosion products of high strength low-alloyed steel and of cast iron, maintained a prolonged period in natural seawater, were analyzed. A part of the corrosion products are soluble compounds of divalent and trivalent iron, the iron dissolution being accelerated when divalent ions are formed and in the case of the aerated seawater. The solid corrosion product formed during corrosion in seawater is principally oxy-hydroxide (FeOOH), but were identified small quantities of Fe2O3, Fe3O4 and so... Autori: Daniel Mareci, Maria Lungu, Nicanor Cimpoeşu, Nicolae Aelenei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25832
Environmental Engineering and Management Journal 10/12
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 â€? SUSTAINABILITY IN ENVIRONMENTAL REMEDIATION
� EVALUATING THE CLIMATIC CHANGES IN THE HYDROLOGICAL FLOW REGIME OF THE MOLDAVIAN AREAS
� ENSURING ECONOMICAL AND FINANCIAL SUSTAINABILITY: STATE FISCAL CONTROL - A WAY TO PREVENT AND REDUCE TAX AVOIDANCE
� COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS
� THE FREE LEVEL UNIFORM POST-DARCY FILTRATION THROUGH A SPHERE-MADE HOMOGENOUS MEDIUM
� HSLA ST... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25838
A NEW PHOTO-FENTON PROCEDURE APPLIED IN OXIDATIVE DEGRADATION OF ORGANIC COMPOUNDS FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 This paper presents a new photo-Fenton procedure applied in oxidative degradation of organic pollutants using 4-chlorophenol (4-CP) as low biodegradable testing compound. The homogeneous photo-Fenton process was modified by using a photo-catalytic reactor equipped with a steel wire mesh which acts as source for Fe2+ catalyst generation into reaction medium and as heterogeneous catalyst, by iron oxy-hydroxyl compounds formation on the surface. The oxidation process was evaluated by measuring the ... Autori: Adina-Elena Segneanu, Cristina Orbeci, Ion Untea, Mihaela Emanuela Craciun, Rodica Stanescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25864
A TECHNO-ECONOMIC ANALYSIS OF BIODIESEL PRODUCTION FROM MICROALGAE
Environmental Engineering and Management Journal › Vol. 12 › Nr. 8 AbstractThe preliminary assessment of a cost-effective flow-sheet for the production of biodiesel from microalgae lipid fraction wascarried out. The study was based on approximated cost-estimation methods integrated with the simulation software Aspen Plus®.Several scenarios were investigated to compare costs regarding the main steps of the biodiesel production process. Ranges ofinput variables from downstream literature and experimental data were used to simulate the sections that define concret... Autori: Antonio Marzocchella, Giuseppe Olivieri, Piero Salatino, Teresa Guida ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25973
EFFICIENCY OF FILTERS WITH DIFFERENT FILTERING MATERIALS: COMPARATIVE STUDY IN WATER TREATMENT
Environmental Engineering and Management Journal › Vol. 12 › Nr. 1
Abstract
In order to accomplish the water quality standards required for a specific use, the continental surface water is treated through a
sequence of operations and unit processes. The treatment technological flowsheets carry out, partially or totally, the removal of
various pollutants, every treatment step being used for improving one or more qualitative parameter. The treatment scheme is
specific to water source type and water use. One of the basic operations for water treatmen... Autori: Oana Tirtoacă Irimia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26136
OPTIMIZATION OF CASING WALL DESIGN FOR ELECTROSTATIC PRECIPITATORS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 9 AbstractElectrostatic Precipitator draws many researches on flue gas treatment technology and very few researches on its structural design. The conventional structural design of electrostatic precipitator casing uses stiffened flat sheet as wallboard which consumes a great amount of steel. Consequently, a new structural idea was explored to optimize the conventional design which applies profiled steel sheet and locates wall beam and wall column. Optimization codes were programmed to select the o... Autori: Dengfeng Wang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26178
IMPROVING THE ENVIRONMENTAL PERFORMANCES OF IRON POWDERS CARBURIZING PROCESS IN A METHANE-BEARING ATMOSPHERE
Environmental Engineering and Management Journal › Vol. 12 › Nr.10 AbstractConsidering the advantages of steel surface hardening, when less expensive low- and medium- carbon steels can be surfacehardened without the problems of distortion and cracking associated with the through hardening of thick sections, we developedsome research entailing the increase in environmental performance of iron powders carburizing process using methane as carrier.Apart of studies on optimal working parameters and methods, our research addresses improvements in environmentalperform... Autori: Olimpia Ghermec ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26198
OPTIMIZATION OF PROCESS FOR TOTAL RECOVERY OF ALUMINUM FROM SMELTING SLAG 1. REMOVAL OF SOLUBLE SALTS
Environmental Engineering and Management Journal › Vol. 12 › Nr.12 AbstractWashing black aluminum (Al) slag to obtain soluble salts is an important stage of the smelting slag treatment at technologicalprocess. This process is used to recover Al as a coagulant for water purification. This research aims at establishing the optimalconditions for washing (e.g. temperature (T), solid: liquid ratio (S : L), time, the recirculation waters in the system). The goal ofresearch was to determine: a) the removal with maximum efficiency of the soluble salts from black Al sla... Autori: Romanita Teodorescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26243
OPTIMIZATION OF PROCESS FOR TOTAL RECOVERY OF ALUMINUM FROM SMELTING SLAG 2. REMOVAL OF ALUMINUM SULFATE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 1 AbstractThis paper continues the previous investigations regarding the technology for the Aluminum (Al) recovery as Al sulfate fromblack Al slag. Leaching is the next compulsory step in the Al extraction process. The paper studies the influence of mothersolutions´ (MS) recirculation resulted from the process within the system over the quality of Al sulfate and the siliceous residue(R) and, the aluminum nitride (AlN) hydrolyses in the leaching process. The optimum parameters determined are: *the ... Autori: Romanita Teodorescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26250
ESTIMATION OF OPTIMUM FILTER CAKE IN PRODUCTION OF IMPERMEABLE LAYER USING FUZZY LOGIC
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractWorldwide, waste materials are produced as a by-product of industrial manufacturing and placed in storage areas. One of the waste materials is filter cake (FC). FC is formed during the infiltration of cooling water in steel factories. The main aim of this research is determination of optimum usage of FC in the production of impermeable layer on ground by using fuzzy model approach. Because of this, in the study, FC as a waste material was hardened with cement and an impermeable layer was... Autori: Ä°lker Bekir Topďż˝u, Murat Karacasu, Tayfun Uygunoğlu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26288
EVALUATION OF THE ENVIRONMENTAL IMPACT OF ROAD PAVEMENTS FROM A LIFE CYCLE PERSPECTIVE
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThe road infrastructure has a major environmental impact by covering important land surfaces and consuming enormous amounts of raw materials for construction and maintenance. The impact of transport pavements needs to be considered from the design stage and to be examined during the whole life cycle of the infrastructure: raw materials extraction and initial transformation, manufacturing, placement on site, exploitation, maintenance, and demolition. This paper evaluates the impact of asp... Autori: Isabela Maria Simion, Laura Dumitrescu, Maria Gavrilescu, , Radu Andrei, Sebastian George Maxineasa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26297
ANALYSIS OF ENVIRONMENTAL AND ECONOMIC BENEFITS IN IRON AND STEEL ENTERPRISES BY ENTROPY WEIGHT FUZZY COMPREHENSIVE EVALUATION MODEL
Environmental Engineering and Management Journal › Vol. 13 › Nr. 5 AbstractTo assess the shares of each indicator of environmental and economic benefits in iron and steel enterprises, the entropy weightfuzzy comprehensive evaluation model is built in this paper based on the consideration of entropy theory and fuzzy mathematicaltheory. The weights of each indicator are determined by entropy optimal theory, and the correlative indicators are processed byfuzzy synthesis evaluation, so as to provide some references for environmental and economic benefits evaluation... Autori: Bin Wang, Hua Li ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26375
A NEW METHOD FOR THE EVALUATION OF RADON CONCENTRATION WITHIN A DEDICATED VESSEL
Environmental Engineering and Management Journal › Vol. 13 › Nr. 7 AbstractEvaluation of radon concentration is a very difficult task and a very important issue, in relation to the protection of human health.This is especially the case when there is an increase in concentration of radon on a deterministic basis, as is the case of nearbyphosphogypsum residues or geological characteristics. Radon gaseous that can be found in the environment occurs mainly fromnatural radioactive decay chains. The gamma ray spectroscopy is a powerful tool in order to monitor the en... Autori: Marius Stamate ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26441
SOCIAL PERCEPTION OF PASSIVE POLLUTION BY ASBESTOS IN DARABANI TOWN, BOTOŞANI COUNTY, ROMANIA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 5 Abstract
Social perception is a tool widely used in the environment research, due to the emphasis put on the one hand on the human
component, as an important factor in the development of society, and on the other hand on the man-environment interaction of
the past decades. The aim of the present study is to assess the population concern about the environment, and particularly about
the use of asbestos (a material partly forbidden in Romania since 2007), for construction purposes. The case st... Autori: Elena Matei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26734
EVALUATION OF CARBON DIOXIDE AND METHANE EMISSION FROM CLUJ-NAPOCA MUNICIPAL LANDFILL, ROMANIA
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
The municipal waste landfills are known as important anthropogenic sources of methane and carbon dioxide being the most
important greenhouse gases. The present study estimates the methane and carbon dioxide emission from the municipal open
dump landfill of Cluj-Napoca (Romania). Two different methods were used: the first method was based on in situ measurements,
using the closed chamber technique and the second one was based on the 2006 IPCC (Intergovernmental Panel on Climate
Chan... Autori: Gabriela-Emilia Popiţa ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26761
EXTREME RISK ASSESSMENT METHODOLOGY (ERAM) IN AVIATION SYSTEMS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 6 Abstract
The research is focused on the relationship between aviation systems and extreme terrorist events, the impacts of such events, and
the solutions to manage the associated risks on medium and long term. The development of predictive models for extremeasymmetric
events in aviation (EAEA) still represents an emerging direction of interdisciplinary research because not all
mechanisms and interactions are understood. The testing of models is difficult due to lack of data and interpretatio... Autori: Catalin Cioaca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26762
EFFICIENT LIGHTNING PROTECTION: OPTIMIZATION OF ECONOMIC, ENVIRONMENTAL AND SAFETY ASPECTS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 8 Abstract
It has been shown that the scale of damage in buildings with steel reinforcement, due to direct lightning strikes, is insignificantly
small compared to lightning effects on buildings with no such steel reinforcement. Observed small-scale damages are also confined
to points of strike; hence the only risk for occupants and properties is injury or damage caused by falling materials. A large number
of such cases have been observed in Sri Lanka and Malaysia. All damaged structures, obser... Autori: Chandima Gomes ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26821
RESEARCHES ABOUT THE CHARACTERIZATION OF METALLURGICAL SLAGS FOR LANDFILLED WASTES MINIMIZATION
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
The aim of this paper is to assess the chemical and mineralogical composition and the leaching behavior of the electric arc
furnace slags (EAFS) in order to improve their management by identifying suitable reuse options in different fields. The chemical
and mineralogical composition of slag varies from one type of steel to another, from one technological stage to another and from
one steel plant to another. In order to minimize the slag quantities disposed in the slag dumps one has ... Autori: Dana-Adriana Iluţiu-Varvara ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26835
TREATMENT OF COMPOST LEACHATE BY MEMBRANE PROCESSES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 9 Abstract
Composting has been attracting increased interest in the field of organic waste management. During composting, high-strength
leachate is produced with a considerable amount of organic and inorganic pollutants. Lab-scale experiments were performed for
the removal of chemical oxygen demand (COD) and chloride from compost leachate using a combined membrane system. The
combined system consisted of microfiltration, ultrafiltration, and reverse osmosis (RO) membranes. The COD removal
eff... Autori: Vahide Şeyda Özyaka ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26847
POPULATION ANALYSIS IN HIGH-NITRATE WASTEWATER TREATMENT IN SEQUENCING BATCH REACTORS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 The pickling liquor used in the stainless steel manufacturing process is a mixture of nitric and hydrofluoric acid which generates
wastewater with nitrate concentrations ranging between 500 and 6000 mgNO3--N/L. In the present study, laboratory-scale anoxic
Sequencing Batch Reactors (SBRs) were used to treat high nitrate wastewaters. Two different sludge inocula were tested: one
from a Municipal Solid Waste Leachate Treatment Plant (LTP), and the other from a Sewage Treatment Plant (STP). Meth... Autori: Ana Isabel Pelaez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26933
RESEARCH ON SUSTAINABLE USE OF POWDERY WASTE
Environmental Engineering and Management Journal › Vol. 15 › Nr. 1 In the context of sustainable development, focus must be set on reasonable use of natural and energetic resources, which is a real
must at present. Besides these, material and informational resources add up to give the full picture of sustainable development
resources. The paper introduces a valid solution of powdery waste recycling into pellets for the steelmaking industry. The pellets
are obtained from powdery wastes (steel plant dust, red sludge, lime dust, dolomite waste, waste limestone,... Autori: Ana Virgina Socalici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26944
RESEARCH ON INCREASING THE REACTION SURFACE OF SELF-REDUCING BRIQUETTES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 Waste recycling in steel industry by turning grain-size and powdery waste into pellets is a must now more than ever for
economical motivation, in order to save raw materials and also for ecological reasons, as it leads to a cut down in the quantity of
dumped waste. Industrial practice offers processors various technologies of waste recycling (agglomeration, briquetting,
pelleting, mechanical mixture). The optimal variant should be chosen according to waste type, its content of useful elements... Autori: Ana Virgina Socalici ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26968
SUSTAINABILITY IN RELATIONSHIP MARKETING: AN EXPLORATORY MODEL FOR THE INDUSTRIAL FIELD
Environmental Engineering and Management Journal › Vol. 15 › Nr. 7 The present paper proposes a new perspective on relationship marketing in international businesses, advancing a
multidimensional model, further referred to as CRMS model (the Cs of Relationship Marketing Sustainability), developed on five
key dimensions of Relationship Marketing Sustainability: Convergence, Commonality, Compatibility, Credibility, Connectivity.
Surpassing unidimensional approaches, the study makes a step forward to proposing and testing the CRMS integrative model
which explo... Autori: Teodor Păduraru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27090
INFLUENCE OF PRINTING MICROCLIMATE PARAMETERS ON ISOPROPYL ALCOHOL EMISSION
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 The concentrations of isopropyl alcohol were monitored during the working time (8 hours) in three different printing plants (two
sheet-fed offset and one digital) in Novi Sad, Serbia, using portable gas chromatograph. The concentration levels were below the
recommended limits by the U.S. National Institute for Occupational Safety and Health. Unequal presence of isopropyl alcohol in
printing plants involved a multiple linear regression analysis of microclimate parameters using program ORIGIN 5... Autori: Jelena Kiurski ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27096
INFLUENCE OF ELECTRODE MATERIAL ON PERFORMANCE OF SEDIMENT MICROBIAL FUEL CELL REMEDIATING AQUACULTURE WATER
Environmental Engineering and Management Journal › Vol. 16 › Nr. 2 Non-availability of good quality water in sufficient quantities and the environmental impacts of used water discharges have led to the treatment and reuse of the aquaculture water contaminated with dissolved organics and ammonia rather than discharging it. This paper explores the effectiveness of in-situ sediment microbial fuel cell (MFC) for aquaculture water treatment along with generation of electricity. A sediment microbial fuel cell (SMFC) was designed and the efficiency of stainless steel ... Autori: Thypparampil Karunakaran Sajana ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27261
FLY ASH CEMENT CONCRETE WITH STEEL FIBERS - COMPARATIVE STUDY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 5 The experimental results of studies on cement concrete with fly ash and metallic fibers are presented and are compared with a control mix. In the tested mixes five dosages of cement replacement with fly ash and two dosages of metallic fibers were considered. Mechanical characteristics such as compressive, flexural and split tensile strengths were experimentally determined. Tests results had shown that fly ash as replacement of cement generally reduced the mechanical strengths of concrete. In the... Autori: Adrian Alexandru Șerbănoiu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27307
CONSIDERATIONS ON THE METHOD FOR SELF ASSESSMENT OF SAFETY AT WORK
Environmental Engineering and Management Journal › Vol. 16 › Nr. 6 Application of the occupational safety self-assessment starts with a document containing dashboard, description of the company (name, location, object activity, organization etc.), description of the work detailing with its components and a brief description of the method of self-evaluation. It continues with a Microsoft Excel document, that is the actual application method and a second document presenting conclusions and prioritizing proposals that may lead to the execution of the protection an... Autori: Costica Bejinariu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27370
THE BEHAVIOR OF MILD STEEL IN WATER CHARACTERIZED BY VOLTAMMETRY
Environmental Engineering and Management Journal › Vol. 16 › Nr. 10 This paper displays the kinetics of the corrosion process for short-term immersion of seven mild steel samples of similar compositions. A comparison between the data obtained for corrosion process in three types of water: bidistilled water (BW), drinking water (DW) (tap water) and river water (RW) (from Bahlui River, Iasi, Romania) has been done. Electrochemical techniques such as the cyclic voltammetry (CV), the linear voltammetry (LV) and the rotating disk electrode technique (RDE) have been u... Autori: Alexandra Ciomaga ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27460
TREATMENT OF PAPERMAKING TOBACCO SHEET WASTEWATER BY ELECTROCOAGULATION AND BIODEGRADABILITY ENHANCEMENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 12 Papermaking tobacco sheet wastewater exhibits high content of fine suspended solids (SS), intensive color and low biodegradability. Through the process of electrocoagulation (EC) using aluminum anode and stainless steel net cathode, the performance of wastewater treatment and the evolution of the main components in wastewater were examined. Maintaining the pH of wastewater, with 40 mA/cm2 of current density, 2.5 g/L of NaCl for a reaction of 6 min duration, 66.1% of the total chemical oxygen dem... Autori: Xiangjuan Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27509
ECO-EFFICIENT DECISION SUPPORT MODEL OF SOLID WASTE RECYCLING
Environmental Engineering and Management Journal › Vol. 17 › Nr. 5 This paper describes an eco-efficiency decision support model for of end-of-life solid waste recycling. A holistic approach in balancing environmental pollution concern and waste recycling is required. A system dynamic model is based on mathematical model of the supply chain, and decision-making analysis is supported with the online spreadsheets. A criterion function-based modelling is used as a core model for simulation that uses net present value-based metrics of the supply chain activities. T... Autori: Stanislav Avsec ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27591
TRACE METALS IN WATER AND SEDIMENTS OF THE PRUT RIVER, ROMANIA
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 A 120 kilometers reach of the Prut River, Romania was surveyed and the concentrations of four trace metals (copper, cadmium, lead and zinc) were determined in water and sediments. These elements are the main pollutants expected in the region, as a steel-producing factory in Romania is located in the close neighborhood of an area under protection, the Lower Prut Floodplain Natural Park. Samples were collected in 2010 and 2011 from the water-sediment interface at six locations along the lower sect... Autori: Marius Lucian Matache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27612
ELECTROCHEMICAL DEGRADATION OF CLINDAMYCIN BY ANODIC OXIDATION ON SnO2-Sb COATED TITANIUM ANODES
Environmental Engineering and Management Journal › Vol. 17 › Nr. 2 Degradation of Clindamycin phosphate (CMP) was studied in aqueous solutions by an anodic oxidation process under galvanostatic conditions. The electrolysis cell consisted of a Ti/SnO2-Sb anode, prepared by dip-coating technique, and a 316 stainless steel cathode, both of which had a surface area of 6 cm2. The effects of critical factors, including CMP concentration, current density, initial pH, and the supporting electrolyte were evaluated. The electrochemical oxidation of CMP was controlled by ... Autori: Mitra Gholami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27639
RE-USE OF INDUSTRIAL WASTES IN CEMENT BOUND MIXTURES FOR ROAD CONSTRUCTION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 2 The paper describes the main results from a study of cement bound mixtures for road foundations with the aggregate matrix consisting of industrial wastes, i.e. foundry sands (FS), electric arc furnace (EAF) steel slags and bottom ash from municipal solid waste incineration (MSWI), combined in five different proportions. The laboratory investigation involved a preliminary analysis of the chemical, leaching, physical and mechanical properties of the industrial wastes, followed by a mechanical char... Autori: Marco Pasetoo ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27645
EVALUATION OF ECO-EFFICIENCY BY MULTICRITERIA DECISION ANALYSIS. CASE STUDY OF ECO-INNOVATED AND ECO-DESIGNED PRODUCTS FROM RECYCLABLE WASTE
Environmental Engineering and Management Journal › Vol. 17 › Nr. 8 Until now, humanity has strived to makes efforts for warranting the economic development on a sustainable way for well-being improvement, simultaneously with resource preservation and environmental protection. The industrial production processes, which generate added value and ensure people welfare are in connection with the environment regarding resource consumption and waste generation.
In order to work on a sustainable basis, industry should attain a balance between economy, ecology and comm... Autori: Elena - Diana Comăniță ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27759
APPLICATION OF LCA METHODOLOGY IN THE ASSESSMENT OF A PYROLYSIS PROCESS FOR TYRES RECYCLING
Environmental Engineering and Management Journal › Vol. 17 › Nr. 10 According to recent estimations, the total yearly amount of end-of-life tyres (ELTs) arising in Europe exceeds 3 million tons; more than 95% are managed through mechanical and thermal treatments because ELTs represent a useful resource both of materials and energy. For this purpose, the goal of the present work is the assessment of the environmental impacts of a novel pyrolysis process and the comparison with alternative ELTs valorisation or disposal scenarios. Life Cycle Analysis (LCA) methodol... Autori: Esmeralda Neri ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27798
INNOVATIVE USE OF SCRAP AND WASTE DERIVING FROM THE STONE AND THE CONSTRUCTION SECTOR FOR THE MANUFACTURING OF BRICKS. REVIEW OF THE INTERNATIONAL SCENARIO AND ANALYSIS OF AN ITALIAN CASE STUDY
Environmental Engineering and Management Journal › Vol. 17 › Nr. 10 The construction sector has evolved a lot over the last few years promoting the design and manufacturing of innovative and environmentally sustainable materials and products. In accordance with European and national guidelines, with a growing awareness of environmental issues several experiences are showing the interest of companies to qualify their products as green and environmentally sustainable. In the European context many directives have been introduced which, among their themes, speak of ... Autori: Marco Migliore ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27806
ACID EXTRACT OF ALOE VERA AS INHIBITOR FOR THE CORROSION OF MILD STEEL IN ACIDIC MEDIA
Environmental Engineering and Management Journal › Vol. 17 › Nr. 12 The corrosion inhibition of mild steel in acidic media at 303 – 333K in 0.1 - 0.5M acids (hydrochloric acid - HCl and trioxonitrate (v) acid - HNO3) and 0.01-0.03g/L Aloe Vera extract (AVE) were investigated by standard weight loss method. The corrosion rate was calculated in the absence and presence of the inhibitors. The inhibition efficiencies of AVE in both acid media increased with increase in concentration and decreased with increase in temperature and period of immersion. Results sh... Autori: Maureen Ndibe ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27870
IMPROVING THE SAFETY LEVEL OF PYROTECHNIC ARTICLES TESTING IN VARIABLE CONDITIONS OF MICROCLIMATE
Environmental Engineering and Management Journal › Vol. 18 › Nr. 4 The related European directives in force stipulate that product testing shall be performed in conditions that reproduce as accurately
as possible the real ones that may be encountered during their operation. These are products whose intended use are specified in the
safety data sheet or within the instructions for use, and whose limits of the micro-climatic parameters that can be encountered
(temperature, humidity, wind - for the outside ones, temperature, humidity, generation of restricted t... Autori: Ilie Ciprian Jitea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27956
APPLICATION OF BASIC OXYGEN FURNACE (BOFS) IN AGRICULTURE: A STUDY ON THE ECONOMIC VIABILITY AND EFFECTS ON THE SOIL
Environmental Engineering and Management Journal › Vol. 18 › Nr. 6 Slags are the main by-products from steelmaking cycle, which are currently recycled inside the steel industry as well as in other
sectors with significant environmental and economic benefits. As in Italy slags application is not yet allowed in agriculture, the
paper aims at evaluating the technical and economic feasibility of a slag treatment plant, to obtain a product to be sold in the fertilizer
market as soil amendment. A preliminary assessment of the fate of some trace metals (Cr, V, Sb a... Autori: Teresa Annunziata Branca ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28012
ASSESSMENT OF CORROSION INHIBITORY EFFECT OF Ruta chalepensis FLAVONOID EXTRACTS ON API 5L X52 STEEL IN 1M HCL MEDIUM
Environmental Engineering and Management Journal › Vol. 18 › Nr. 9 The development of green eco-friendly inhibitors for the corrosion of metallic surfaces in acid media is still considered as a major challenge and target for corrosion-mitigation engineers. We have prepared in this work 4 different extracts from the plant Ruta Chalepensis using methanol, chloroform, ethyl acetate, and aqueous ethyl acetate solvent systems. The flavonoids content, as well as the other oxygenated compounds, in the 4 extracts was carefully screened using the gas chromatographic&nda... Autori: Meryem Amal Benghalia ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28063
A SURVEY OF FACTORS INFLUENCING SPREADSHEET RISK AWARENESS
Environmental Engineering and Management Journal › Vol. 19 › Nr. 5 Motivated both by reports on devastating financial and reputation-related consequences of spreadsheet errors and the results of previous studies suggesting a significant lack of users’ awareness of spreadsheet risks, this paper provides insight into factors that
influence users’ perception of risks associated with creating and using spreadsheets. The survey was conducted on a sample of 161 spreadsheet users, whose attitudes were analyzed in accordance with 17 attributes. Statistical... Autori: Lazar Raković ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28202
ANALYSIS OF CO2 EMISSIONS BETWEEN CONSTRUCTION SYSTEMS: LIGHT STEEL FRAME AND CONVENTIONAL MASONRY
Environmental Engineering and Management Journal › Vol. 19 › Nr. 12 Since the emission of greenhouse gases is an important environment issue, this paper presents an analysis of CO2 emissions between two different building methodologies: conventional masonry and light steel frame. To this end, a 70m² building project used in
Social Brazilian Housing Programs (SBHP) built according to both methods was analyzed. In addition to that, the quantitative materials used were determined, according to the building services (infrastructure, superstructure, closing and... Autori: Silmara Dias Feiber ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28332
STUDY ON ELECTROCHEMICAL ADVANCED OXIDATION PROCESS TO TREAT FISH MEAL INDUSTRY WASTEWATER
Environmental Engineering and Management Journal › Vol. 19 › Nr. 12 Fish meal processing industries convert the raw fish into a various commercially edible form. The effluent generated from this industry comprises a large amount of pollutants leading to high values of biochemical oxygen demand (BOD), chemical oxygen
demand (COD) and total suspended solids (TSS). Mostly traditional biological and chemical methods have been adopted to treat the effluent coming out of the fish meal industry. By using these traditional methods at the end of the process, a large amo... Autori: Rajagopalan Varadarajan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28335 |