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Rezultatele pentru fentonRezultate gasite: 56
Degradation of alcian blue 8 gx by heterogeneous and homogeneous photocatalytic processes
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 <!--[if !supportEmptyParas]--> The photocatalytic degradation of Alcian Blue 8 GX, a copper phthalocyanine cationic dye, has been investigated in aqueous solutions both in heterogeneous and homogeneous systems. Initial colour removal rates in different conditions were calculated in both cases. Influence of amounts of H2O2 and FeCl3 was studied and compared for the two photocatalytic systems. Finally, some conclusions regarding the efficiency of the two photocatalytic processes were es... Autori: Anca Florentina Caliman, Chrysanthi Berberidou, , Liliana Lazar, Matei Macoveanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25114
Wet hydrogen peroxide catalytic oxidation of parachlorophenol over clay based catalysts
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 This study presents an evaluation of the catalytic performances of Fe containing clay-based catalysts for the wet hydrogen peroxide catalytic oxidation (WHPCO) of 4-chlorophenol (4-CP) aqueous wastes. The catalysts were prepared by well-established techniques, their properties being determined by DRX, BET and chemical analysis techniques. All the tests were performed on a laboratory scale set-up. The ion-exchanged clays were the most active catalysts (100 % 4-CP and 84 % COD removal for Fe-Mt) b... Autori: , Cezar Catrinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25157
Environmental Engineering and Management Journal, Vol. 1 Nr. 4
Environmental Engineering and Management Journal › Vol. 1 › Nr. 4 Contain all the articles from this issue:ICEEM/01 -- Environmental Management Section Corporate environmental competence: A concept for characterising and assessing the environmental practice in companies and product chainsMichael S?¸gaard J?¸rgensen, Marianne Forman Life cycle assessment of some alternatives for the supply of thermal energy in the municipality of Iasi (Romania).Nicolae Peiu Management options for the industrial and municipal wastes in the city of Iasi Carmen Teod... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25169
Environmental Engineering and Management Journal, Vol. 9 Nr. 1
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 ? Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics
? Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays
? Researches on the negative effects assessment (slugging, clogging, ash deposits) developed at the biomass-coal co-firing
? Contribution to the study of the environmental heritage of a former chemical plant
? Impact of chemicals on derivatives with important therapeutic activity in C... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25376
Environmental Engineering and Management Journal, Vol. 6 Nr. 6
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 Iinclude urmatoarele articole:â€? Phenol degradation in water through a heterogeneous photo-fenton processâ€? Study concerning the influence of oxidizing agents on heterogeneous photocatalytic degradation of persistent organic pollutantsâ€? Nonmarket valuation of acequias: Stakeholder analysisâ€? Metals concentration in soils adjacent to waste depositsâ€? Polyelectrolyte - surfactant complexesâ€? Modelling of sorption equilibrium of Cr(vi) on isomorphic substituted Mg/Zn-Al - type hydrotalcitesâ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25206
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
Phenol degradation in water through a heterogeneous photo-fenton process
Environmental Engineering and Management Journal › Vol. 6 › Nr. 6 AbstractA new photo-Fenton catalyst has been manufactured from synthetic layered clay laponite (Laponite RD) by the pillaring technique Eight different catalyst samples were prepared: four without thermal aging (WTA) calcined at 523 0K, 623 0K, 723 0K and 8230 K, and other four with thermal aging (TA) calcined at the same temperatures. The activity of the TA- 623 sample was evaluated in the phenol degradation by the photo - Fenton process. The influence of five important operating factors has be... Autori: Beatrice Iurascu, Ilie Siminiceanu, Miguel Vincente ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25210
A kinetic model for the crystal violet mineralization in water by the electro- fenton process
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe mineralization of acidic aqueous solutions with 0.166 to 1.333 mM Crystal Violet (CV) in 50 mM Na2SO4 as background electrolyte has been studied by the electro- Fenton method, where the oxidizing hydroxyl radicals were produced from the Fenton reaction between added ferrous ions and hydrogen peroxide generated at a oxygen- diffusion cathode. The influence of a new operating factor on the mineralization degree has been investigated: anode material (platinum versus boron doped diamond)... Autori: Carmen-Ionela Alexandru, Eric Brillas, Ilie Siminiceanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25229
Mineralization of two phenyl urea herbicides in water by a heterogeneous photo-Fenton process
Environmental Engineering and Management Journal › Vol. 7 › Nr. 1 AbstractThe paper presents new experimental results on the photodegradation of two important phenyl urea herbicides in water: Monuron and Isoproturon. The photodegradation was performed by two Advanced Oxidation Processes (AOPs): the homogeneous photo- Fenton process (, UV-H2O2 - Fe3+) and a heterogeneous photo - Fenton reaction using an iron pillared Laponide- RD catalyst (Fe-Lap-RD). The Fe-Lap-RD catalyst was prepared from iron nitrate 0.2 M solution and a suspension of Laponite - RD clay. Th... Autori: Elsa Lundanes, Ilie Siminiceanu, Maria-Magdalena Bobu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25234
Environmental Engineering and Management Journal, Vol. 9 Nr. 3
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 ? Denitrifying activity of activated sludge in suspension and in biofilm? Denitrifying potential of an activated sludge derived consortium? Biosorption of hexavalent chromium based on modified Y zeolites obtained by alkali-treatment? Identifying anaerobic digestion models using simultaneous batch experiments? Olive mill wastewater as a renewable resource? Influence of innoculum acclimation in the biodegradation rate and estimated biodegradbility of cow manure, food waste and oil? Studies on the ... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25378
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
Preliminary study of simple and Fenton oxidation with hydrogen peroxide applied on final effluents from a zootechnical farm
Environmental Engineering and Management Journal › Vol. 8 › Nr. 3 Abstract
The paper presents the preliminary experimental results performed at laboratory scale set-up for different combined mechanochemical treatments of final effluents from a zootechnical farm from the central Moldavian region of Romania. Because of the high content of pollutants into wastewaters, the soil can be polluted and also the ground waters. To avoid this soil pollution episode, some combined mechano-chemical processes were studied and applied into a specific technological order as... Autori: Carmen Zaharia, Mioara Surpăţeanu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25434
Textile wastewater treatment by homogeneous oxidation with hydrogen peroxide
Environmental Engineering and Management Journal › Vol. 8 › Nr. 6 Abstract
The textile wastewaters have a diverse composition depending both on the used raw materials and applied manufacturing technologies. These wastewaters may contain various pollutants such as organic compounds (e.g. residual dyes), suspended solids, metal ions etc. Most of dyes are synthetic compounds with aromatic molecular structures and non-biodegradable. The oxidative destruction via homogenous oxidation processes with hydrogen peroxide (simple chemical oxidation with H2O2 or advanc... Autori: Carmen Zaharia, Daniela Suteu, Augustin Muresan, Rodica Muresan, Alina Popescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25570
Catalytic wet hydrogen peroxide oxidation of 4-chlorophenol over iron-exchanged clays
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
Chlorophenols were selected for this study because most of them are toxic and difficult to biodegrade. They represent a particular group of priority toxic pollutants listed by the US EPA in the Clean Water Act and by the European Decision 2455/2001/EC. The efficiency of advanced oxidation processes for degradation of chlorophenols has been extensively documented. The catalytic wet hydrogen peroxide oxidation process, involving oxidation with H2O2 and solid catalysts in mild reaction ... Autori: Brindusa Dragoi, , Cezar Catrinescu, Daniela Arsene ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25601
Kinetics considerations concerning the oxidative degradation by photo-fenton process of some antibiotics
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
The aim of this study is the evaluation of photo-Fenton as a suitable advanced oxidation process to degrade ampicillin and streptomycin antibiotics. The degradation was studied by monitoring the organic substrate concentration changes in aqueous solution as a function of reaction time using COD analysis. The oxidation process follows two successive stages. In the first stage (I) the oxidation of the antibiotics takes place with high reaction rate, leading to intermediate oxidation pr... Autori: Cristina Orbeci, Daniela Simina Stefan, Ion Untea, Madelene Dancila ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25602
Chemical oxidation of treated textile effluent by hydrogen peroxide and fenton process
Environmental Engineering and Management Journal › Vol. 9 › Nr. 3 Abstract
In this study the possibility to apply the oxidation process for treating textile effluents, by using hydrogen peroxide and Fenton process was evaluated through determining the color and chemical oxygen demand (COD) removal. The experimental variables studied include the dosages of hydrogen peroxide and iron salts, oxidation time and pH value. The result showed that oxidation process using hydrogen peroxide alone is inefficient in COD and color removal, since only 25 % of COD removal... Autori: Abdelnaser Omran, , Marniyanti Mamat Noor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25631
Environmental Engineering and Management Journal, Vol. 9 Nr. 5
Environmental Engineering and Management Journal › Vol. 9 › Nr. 5 ? SUSTAINABLE CONCRETE HARDENING PROCESSES IN NORMAL CLIMATIC AND THERMAL TREATMENT CONDITIONS
? THE ENVIRONMENTAL DIMENSION ? AN INTERDISCIPLINARY RESEARCH AREA
? MENU PLANNING STRATEGY BASED ON ECOLOGICAL FOOTPRINT
? EVALUATING ENVIRONMENTAL IMPACT OF NIGERIAN COMPOSTED WASTES USING LABORATORY EXTRACTION TEST
? IN SITU RADIOFREQUENCY FIELD LEVEL ASSESSMENT IN TWO URBAN AREAS IN ROMANIA: OPEN QUESTIONS TO ELECTROMAGNETIC POLLUTION
? INNOVATIVE SOLUTION FOR WARNING ON HI... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25657
Environmental Engineering and Management Journal, Vol. 9 Nr. 4
Environmental Engineering and Management Journal › Vol. 9 › Nr. 4 ? POLLUTION PREVENTION, A KEY TO ECONOMIC AND ENVIRONMENTAL SUSTAINABILITY
? A COMPARISON BETWEEN DIFFERENT SCENARIOS OF ROMANIAN MUNICIPAL SOLID WASTE TREATMENT BEFORE LANDFILLING
? A STUDY ON ENERGY CONSUMPTION IN ROMANIA
? ENVIRONMENTAL INFLUENCES ON STRESSED METALLIC SURFACES
? ASPECTS OF HYDRODYNAMICS AND MASS TRANSFER IN DIFFUSED AERATION SYSTEMS
? THE STATUS OF SOME SELECTED HEAVY METALS IN ROADSIDE SOILS OF BURSA PROVINCE, TURKEY
? PREPARATION AND CHARACTERI... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25656
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
TRANSFORMATION AND FLUORESCENCE SPECTROSCOPY OF DISSOLVED ORGANIC MATTER (DOM) IN LANDFILL LEACHATE TREATED BY COMBINED PROCESS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 7 The paper analyses the removal efficiency and fluorescence spectroscopic characterization of landfill leachate dissolved organic matter (DOM) fractions in the combined stripping, fenton oxidation, sequence batch reactor, and coagulation process. The high contents of DOM of landfill leachate in each process unit were fractionated into HA, FA, and HyI. The result was the combined process availability for effective removal of DOM fractions. The removal rates for DOM, HA, FA and HyI were 91.9%, 97.1... Autori: Zhiping Liu, Jin-song Guo, Fang Fanghttp://www.ecozone.ro/reviste.php?RID=25702
ELECTROCHEMICAL DECOLORIZATION TREATMENT OF NICKEL PHTHALOCYANINE REACTIVE DYE WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 11 Abstract: In this study, decolorization and degradation of aqueous nickel phthalocyanine reactive dye solutions was comparatively studied by electrochemical methods, such as electrocoagulation, electrooxidation and electro-Fenton processes. In the electrocoagulation process with aluminum electrodes the colored aqueous solutions containing 100 mg/L nickel phthalocyanine and 6 g/L NaCl were treated at initial pH 7.5 and applied current densities of 5, 10 and 20 mA/cm2, where fast and 100% decolori... Autori: Achilleas Christoforidis, Dimitrios Marmanis, Evgenia Valsamidou, Konstantinos Dermentzis, Konstantinos Ouzounis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25804
COMBINED OXIDATION AND ULTRAFILTRATION PROCESSES FOR THE REMOVAL OF PRIORITY ORGANIC POLLUTANTS FROM WASTEWATERS
Environmental Engineering and Management Journal › Vol. 10 › Nr. 12 This paper presents a study on the integration of two advanced treatment processes for the removal of priority organic processes from wastewaters: catalytic oxidation (Fenton homogenous process) followed by ultrafiltration. The aim of this study was to assess the removal efficiency for 4-chlorophenol (used as model pollutant), as well as the decrease in effluent toxicity in various processes conditions. The experiments have mainly focused on studying the effect of the oxidant dose of the catalyt... Autori: , Cezar Catrinescu, Corina Petronela Musteret, Daniela Arsene, George Barjoveanu, Petru Apopei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25834
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
COMBINED CATALYTIC OXIDATION AND ADSORPTION OF PRIORITY ORGANIC POLLUTANTS FOR WASTEWATER RECYCLING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThe increased concentrations of priority pollutants in wastewaters have imposed the completion of conventional treatment withadvanced treatment stages (such as catalytic oxidation, membrane processes, adsorption, ion exchange, etc.) for their removal bychemical degradation and/or physical separation.In this study, 4-chlorophenol (4-CP) is proposed as model-pollutant for the priority organic pollutants present in syntheticwastewaters and several processes which can act as advanced treatme... Autori: Carmen Teodosiu, Corina Petronela Musteret, Daniela Arsene, Daniela Cailean, George Bârjoveanu, Petru Apopei, Roxana Elena Apreutesei ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26022
RESPONSE SURFACE METHODOLOGY APPLIED FOR THE OPTIMIZATION OF REACTIVE BLACK 5 DISCOLORATION IN A FENTON-LIKE PROCESS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 5 AbstractThere are many treatment methods used to remove color from textile wastewater, and Fenton oxidation, a well known AdvancedOxidation Process is one of the most efficient. Apart of Fe(II), other metal ions have been used as catalysts in Fenton’s Reagent,and Cu(II) proved to be a good alternative.In this study the effect of the concentration of dye, catalyst and hydrogen peroxide were studied and optimized for thediscoloration process of Reactive Black 5 using a Fenton-like process, H2O2/Cu... Autori: Andrei-Petru Bertea, Armand-Florin Bertea, Romen Butnaru ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26042
COAGULATION COMBINED WITH FENTON PROCESS FOR THE TREATMENT OF WATER-BASED PRINTING INK WASTEWATER
Environmental Engineering and Management Journal › Vol. 12 › Nr. 11 AbstractWater-based printing ink has been used widely and perfectly in printing the packaging of food, drug, and wine products etc.However, due to the need of altering different colors of ink, most water-based printing ink wastewater was generated from theequipment cleaning process. Coagulation combined with Fenton process has been used for this kind of wastewater treatment inthis study, results showed that coagulation using polyaluminium chloride (PACl) as coagulant and ferrous sulfate (FeSO4) ... Autori: Xiangjuan Ma ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26214
REMOVAL OF As(III) AND As(V) FROM AQUEOUS SOLUTION USING MODIFIED SOLID WASTE VEGETABLE OIL INDUSTRY AS A NATURAL ADSORBENT
Environmental Engineering and Management Journal › Vol. 13 › Nr. 2 AbstractThis paper presents the results of the removal of arsenite and arsenate ions from an aqueous solution using Fenton modified solid waste vegetable oil industry (SWVOI). Several factors (such as pH, contact time and Fe2+/H2O2 ratio, initial arsenic ion concentration and adsorbent concentration) that affect the arsenic ion adsorption on the SWVOI adsorbent material were investigated. The sorption characteristics of the adsorbent material before modification were also studied and compared wi... Autori: Hoda Amiri, Mehdi Ahmadi, Nemat Jaafarzadeh, Susana Silva Martínez ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26290
FENTON AND PHOTO-FENTON OXIDATION OF SULFIDIC SPENT CAUSTIC: A COMPARATIVE STUDY BASED ON STATISTICAL ANALYSIS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 3 AbstractThis investigation compared the performance of Fenton and photo-Fenton oxidation processes in the treatment of sulfidic spentcaustic wastewater. Response surface methodology, particularly central composite design was used to investigate the effect ofFe/H2O2 and H2O2/COD in assessing treatment process efficiency. Empirical models were developed to describe the relationshipbetween the factors and responses. The models were validated through analysis of variance and were further used in pro... Autori: Azmi Aris, Mohd Ariffin Abu Hassan, Sharifah Hanis Yasmin Sayid Abdullah, Siti Fadilah Md Noor, Zainura Zainon Noor ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26307
ELECTROCHEMICAL RECLAMATION OF WASTEWATER RESULTED FROM PETROLEUM TANKER TRUCK CLEANING
Environmental Engineering and Management Journal › Vol. 13 › Nr. 9 AbstractPetroleum tanker trucks are integral vehicles for delivering fuel and other petrochemical products from place to place and must becleaned regularly. Pressure washing with hot or cold water serving to remove oil and filth from the tanker truck container,produces oily waste water with an oil concentration of about 300-500 mg L-1 which, according to environmental standards andregulations worldwide, must be disposed of and treated properly. In the present paper an integrated electrochemical ... Autori: Konstantinos Dermentzis ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26520
ADVANCED OXIDATION OF AN AZO DYE AND ITS SYNTHESIS INTERMEDIATES IN AQUEOUS SOLUTION: EFFECT OF FENTON TREATMENT ON MINERALIZATION, BIODEGRADABILITY AND TOXICITY
Environmental Engineering and Management Journal › Vol. 13 › Nr. 10 AbstractThe objective was to study the degradation of azo dye C.I. Acid Orange 7 (AO7) and intermediates for its synthesis sulphanilicacid (SA) and 2-naphthol (2-N) by Fenton process. Full factorial design and response surface methodology were applied to modelthe system behavior influenced by studied process parameters ([Fe2+] and [H2O2]).Optimal process conditions were determined on the basis of mineralization efficiency. The effectiveness evaluation of appliedtreatment process was conducted on... Autori: Sanja Papić ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26569
COD REMOVAL FROM SYNTHETIC WASTEWATER CONTAINING AZITHROMYCIN USING COMBINED COAGULATION AND A FENTON-LIKE PROCESS
Environmental Engineering and Management Journal › Vol. 13 › Nr. 12 Abstract
In this study, the COD removal of Azithromycin from synthetic wastewater (produced to have a composition similar to industrial
wastewater) using a Fenton-like (Fe°/H2O2) system in combination with coagulation has been investigated. Chemical oxygen
demand (COD) was selected as the main parameter to assess treatment efficacy in the current study (COD° = 390mg/Lequivalent
to 200mg/LAzithromycin). First, the coagulation process was carried out on the synthetic wastewater and the... Autori: Ahmad Reza Yazdanbakhsh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26586
KINETIC MODELING OF DIESEL OIL WASTEWATER DEGRADATION USING PHOTO-FENTON PROCESS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 1 Abstract
The objective of this study is to develop a mathematical model which would confidently predict the rate of substrate degradation
of an oil-water emulsion in a laboratory-scale completely-mixed continuous flow reactor using the photo-Fenton treatment
process. Two models are developed from first principles and the predicted substrate removal rates for both models are compared
with experimental data. The principal conclusions of the study are that both models produce good correlations ... Autori: Maha A. Tony ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26613
ENHANCING THE FENTON PROCESS BY UV LIGHT APPLIED IN TEXTILE WASTEWATER TREATMENT
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
Nowadays, an efficient wastewater management involves the use of advanced treatment technologies able to decompose hardly
biodegradable compounds with reasonable costs at the lowest possible environmental impact. In our work we used one of the
most efficient advanced wastewater treatment, the Fenton reaction and its photo-assisted version. The hydrogen peroxide was the
oxidizer; despite its relatively high cost, its high activity in oxidizing of a large variety of organic persistent... Autori: Vasilica-Ancuta Simion ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26677
DECOLORIZATION OF ORANGE II BY HETEROGENEOUS FENTON PROCESS USING GOETHITE AS CATALYST
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
The effect of goethite addition, hydrogen peroxide concentration, initial pH, hydroxyl radical scavenger and initial dye
concentration on the decolorization of Orange II by Fenton-like process was investigated. The results showed that the
decolorization rate increased with goethite addition and hydrogen peroxide concentration, but decreased with the increase of
initial dye concentration. There existed an optimal initial pH to achieve the highest decolorization rate. The presence of
... Autori: Hui Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26693
NICKEL (II) REMOVAL FROM INDUSTRIAL PLATING EFFLUENT BY FENTON PROCESS
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
In this study, the efficiency of Fenton’s process to remove nickel (II) from industrial plating effluent was investigated. The effect
of pH, contact time, concentrations of Fe2+ and H2O2 were surveyed. Kinetic experiments were performed in order to predict the
nickel (II) removal rate from wastewater. At pH 1 to 4, nickel (II) removal efficiency increased and declined at pH > 4. The
maximum nickel (II) removal efficiency was 98% at 60 min contact time, pH: 4, and Fe2+ and H... Autori: Mohammad Malakootian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26704
COMPARISON OF THE STABILIZING CAPABILITIES OF IRON AND ALUMINUM IN TREATING WASTE HIGHLY CONTAMINATED WITH ARSENIC
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 Ferric sulfate and aluminum sulfate were applied to stabilize the available arsenic in solid waste residue (SWR) from the organic
arsenic industry, previously pretreated by the semi-solid Fenton process. NaOH, Ca(OH)2, and MgO were introduced to adjust
the matrix pH. Toxicity characteristic leaching procedure (TCLP), synthetic precipitation leaching procedure (SPLP), and
sequential extraction procedure (SEP) were carried out to evaluate the effect and difference on the fixation treatments of ... Autori: Li-Fang Hu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26956
COMBINED AEROBIC AND H2O2/SULFURIC ACID TREATED ACTIVATED CARBON-FENTON TREATMENT OF AGROCHEMICAL INDUSTRY WASTEWATER
Environmental Engineering and Management Journal › Vol. 15 › Nr. 2 Treatment of agrochemical industry wastewater is difficult to carry out unless integration with some advanced oxidation process
(AOP) is used. The present study deals with treatment of an agrochemical industry wastewater, first using activated sludge and
then with sulfuric acid treated activated carbon (SAAC) in presence of Fenton reagent. During the activated sludge treatment the
food-to-microorganisms (F/M) ratio is varied from 0.1 to 0.2 mg chemical oxygen demand (COD) per mg mixed liquor
... Autori: Makarand Vasant Karkare ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26957
ON THE PRESENCE OF ORGANOPHOSPHORUS PESTICIDES IN DRAINAGE WATER AND ITS REMEDIATION TECHNOLOGIES
Environmental Engineering and Management Journal › Vol. 15 › Nr. 8 This study was carried out to monitor the presence of organophosphorus in drainage water (Kafr El-Sheikh (Kotshinar Drainage),
Fowa (Fowa Drainge No.11), Metobess (El-Hokss Drainage), Beila (Karakat Drainage), Balteem (Hafeer Shihabeldeen
Drainage), Nashart Drainage and El-Hamoul (El-Hamoul Drainage) in Kafr-El-Sheikh Governorate, Egypt. Furthermore, the
efficacy of chemical (advanced oxidation processes) and bioremediation (effective microorganisms) for chlorpyrifos removing in
drainage wat... Autori: Aly Derbalah ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27104
HETEROGENEOUS PHOTO-FENTON DEGRADATION OF QUINOLINE WITH A NOVEL INTERNAL CIRCULATING FLUIDIZED-BED REACTOR
Environmental Engineering and Management Journal › Vol. 15 › Nr. 9 The removal of quinoline from synthetic wastewater by heterogeneous photo-Fenton in a novel internal circulating fluidized-bed
reactor was investigated systematically. The flow field in the reactor was simulated by FLUENT software conjoined with tracer
particles experiment, and the influence of reaction parameters such as initial quinoline concentration, catalysts dosage and H2O2
dosage were evaluated. Results indicated that the designed reactor was suitable for the heterogeneous photo-Fenton... Autori: Ran Zhang ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27142
ELECTROCHEMICAL CATALYTIC DEGRADATION AND BIODEGRADABILITY ENHANCEMENT OF REAL TEXTILE WASTEWATER BY ANODIC AND CATHODIC REACTIONS
Environmental Engineering and Management Journal › Vol. 15 › Nr. 10 An electro-Fenton process was carried out using undivided cell containing tridimensional graphite felt cathode for treatment of real textile wastewater. The study is essentially focused on effects of pH, applied current and transition metal types (Fe2+ and Cu2+) as catalysts on the electrochemical degradation efficiency based on color and COD removal and BOD5/COD value. The results indicated that pH 3 and applied current of 150 mA are the optimum conditions for decolorization and COD removal of ... Autori: Akbar Eslami ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27167
RELIABILITY STUDY OF LABORATORY SCALE WATER TREATMENT BY ADVANCED OXIDATION PROCESSES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 1 The application of advanced oxidation processes (AOPs) emerged as an interesting topic during the last decade. Many studies have been devoted to the complexity of phenomena imposed by AOPs, and a lot of effort was made to justify the application of AOPs. However, the reliability of AOPs has not been an issue of any extensive work. In this work, failure analysis and comparative reliability study were performed for the chosen AOP system, i.e. a laboratory scale photo- and sonoreactor, during the p... Autori: Ivana Grčić ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27220
A POSSIBLE DISTRIBUTION OF NITROGEN COMPOUNDS DURING NATURAL MINERAL WATERS DISINFECTION TREATMENT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 3 This study aims to evaluate the effects of Fe2+ present in carbonated natural mineral waters on the decomposition of hydrogen peroxide (H2O2) used as sanitizing agent of the collector water tanks and the oxidation of NH4+ to NO3– and NO2– nitrogen compounds from bottled carbonated natural mineral water by the Fenton process. This evaluation suggests that the distribution of the nitrogen compounds, at certain concentrations of H2O2 is influenced by facilitated Fenton reaction in the p... Autori: Daniela Bogdan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27279
REMOVAL OF DICLOFENAC FROM SECONDARY WASTEWATER EFFLUENTS BY FENTON BASED PROCESSES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 4 This study considers the removal of diclofenac (an important representative of pharmaceuticals and personal care products - PPCPs) from the secondary effluents of Iasi municipal wastewater treatment plant by means of different advanced oxidation processes (homogeneous Fenton, photo-Fenton and photolysis), carried out in a laboratory scale reaction system. The influence of three qualitative or quantitative factors (Fe3+ concentration, the absence/presence of UV-A radiation and H2O2) was studied i... Autori: Cezar Catrinescu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27322
EVALUATION OF COMBINED FENTON OXIDATION AND CHEMICAL PRECIPITATION PROCESS PERFORMANCE IN CYANIDE REMOVAL FROM AQUEOUS SOLUTION
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 This study was conducted to evaluate the cyanide removal efficiency by coupled process of Fenton and coagulation/precipitation
from aqueous solution. The study was performed at laboratory scale in a batch system. Variations of pH, Fenton and precipitation
reagents (molar ratios of Fe2+/H2O2 and ferric chloride), contact time and initial concentration of cyanide were investigated, and
the optimum conditions obtained from each of the Fenton and precipitation processes were followed in the coupl... Autori: Ahmad Jonidi Jafari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27426
SYNTHETIC TEXTILE WASTEWATERS TREATMENT BY COAGULATION/FLOCCULATION USING FERRIC SALT AS COAGULANT
Environmental Engineering and Management Journal › Vol. 16 › Nr. 9 Three different synthetic textile dyeing wastewaters were treated by a chemical coagulation/flocculation process, using ferric
sulphate as coagulant. Polyacrylamide (Magnafloc 155) and polyamine (Superfloc C-573) based flocculants were applied. The
influence of pH (between 3.5 and 10.4) and Fe3+ concentration (from 15 to 4000 mg/L) in both color and dissolved organic
carbon (DOC) removal of polyester, cotton and acrylic dyeing wastewaters was assessed in the coagulation stage. As far as
floc... Autori: Carmen S.D. Rodrigues ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27427
REMOVAL OF MULTILAN RED AND MULTI-ACTIVE BLUE DYES FROM AQUEOUS SOLUTION BY ADSORPTION AND OXIDATION TECHNIQUES: EQUILIBRIUM, KINETICS AND THERMODYNAMIC STUDIES
Environmental Engineering and Management Journal › Vol. 16 › Nr. 12 This study evaluated the performances of adsorption and Fenton oxidation for the removal of multilan red (MLR) and multi-active blue (MActB) dyes from aqueous solution. Zeolite, the adsorbent used in the study was modified using two surfactants: hexadecyltrimethylammonium bromide (HDTMA-Br) and cetyltrimethylammonium bromide (CTAB). The modified zeolite characterized using FTIR, SEM and XRD analysis. The modification studies revealed that HDTMA-modified zeolite exhibited better performance than ... Autori: Jacob Kitinya ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27505
REMOVAL OF DYES FROM WATER BY GALVANOCOAGULATION
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 Galvanocoagulation (GC) utilizing metallic iron chips and granular coke was studied as a potential technique for decolorization of dye-containing aqueous solutions. GC and chemical coagulation by inorganic metallic coagulants such as iron sulfates (Fe2+, Fe3+) were examined for the removal of individual dyes, used in the fur industry, from model aqueous solutions. The role of metal cations when progressively electrogenerated in situ was compared to when they are added simultaneously. The superio... Autori: Marina R. Sizykh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27526
OPTIMIZATION OF PHENOLIC COMPOUNDS ABATEMENT IN OLIVE MILL WASTEWATER BY FENTON’S LIKE TREATMENT WITH H2O2/Cu2+ UNDER MICROWAVE USING EXPERIMENTAL DESIGN
Environmental Engineering and Management Journal › Vol. 17 › Nr. 5 This work describes the application of Fenton’s like system (H2O2/Cu2+) assisted by microwaves to the removal of phenolic compounds from olive mill wastewater (OMWs). The effect of various operating conditions, namely copper ion concentrations (X1), hydrogen peroxide (X2), time of irradiation (X3) and microwave power (X4) were evaluated by factorial design of experiments. Results showed that X1, X2, X3 and X4 had significant effects on the response followed by the interactions X1X2, X1X3, ... Autori: Hamida Iboukhoulef ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27602
DEGRADATION OF CHLOROTHIAZIDE IN ACIDIC AQUEOUS SOLUTION BY ELECTRO-FENTON PROCESS
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 The aim of this study is the treatment of Chlorothiazide in an aqueous medium by Electro-Fenton process using a Platinum anode. This pharmaceutical product is used to treat hypertension. Removal rates and mineralization efficiency have been analyzed under different operational conditions. Degradation kinetics well fitted to a pseudo–first–order reaction. Apparent rate constant of the oxidation of Chlorothiazide by electrochemically generated hydroxyl radicals was determined to be 9.4... Autori: Saied Taieb ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27616
Environmental engineering and Management Journal No. 6
Environmental Engineering and Management Journal › Vol. 17 › Nr. 6 FLUCTUATION OF RIVER NETWORK WATER ENVIRONMENTAL CARRYING CAPACITY IN A COMPLICATED RIVER-LAKE SYSTEM
• MINERALOGY AND GEOCHEMICAL DISTRIBUTION OF HEAVY METALS FOR THE FAGUL CETĂȚII TAILINGS, ROMANIA
• ACCUMULATION AND AVAILABILITY OF TRACE ELEMENTS FROM SOIL INTO ORIENTAL TOBACCO GROWN IN MACEDONIA
• OLFACTORY EFFECT ON LANDSCAPE PREFERENCE
• EFFECT OF MOLASSES ADDITION AS BIODEGRADABLE MATERIAL ON PHENOL REMO... Autori: ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27628
A REVIEW ON OCCURRENCE, MEASUREMENT, TOXICITY AND TANNIN REMOVAL PROCESSES FROM WASTEWATERS
Environmental Engineering and Management Journal › Vol. 18 › Nr. 1 A wide range and globally active agro-industries such as olive oil processing, winery, tannery, textile and food production discharge
a large volume of wastewater containing tannins. Tannins are complex structured chemicals which cause high organic content,
requiring high dissolved oxygen in wastewater treatment plants or producing oxygen depletion in the aquatic environment. Tannins
are known to be hardly degraded in biological treatment. There has been evidence that the presence of natural ... Autori: Giusy Lofrano ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27885
OPTIMIZATION OF ADVANCED OXIDATION PROCESSES FOR THE REMOVAL OF ACETAMIPRID FROM WASTEWATER
Environmental Engineering and Management Journal › Vol. 18 › Nr. 1 Advanced oxidation process is getting tremendous importance in the treatment techniques for the removal of nonbiodegradable
organics from wastewater due to its ability to completely mineralize the pollutants. It uses different methods to produce hydroxyl
radicals which are responsible for oxidation of pollutants. In this work, studies on Fenton, ultraviolet radiation (UV) and UVhydrogen
peroxide processes for removing acetamiprid, a neonicotinoid insecticide from aqueous solution are carried ... Autori: Puthenkattil Abdukunji Fasnabi ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27895
DEVELOPING MULTI-CRITERIA DECISION ANALYSIS AND TAGUCHI METHOD TO OPTIMIZE CIPROFLOXACIN REMOVAL FROM AQUEOUS PHASE
Environmental Engineering and Management Journal › Vol. 18 › Nr. 7 In this research, optimization of Homogeneous Fenton process was performed using Multi-Criteria Decision Analysis (MCDA) and
Taguchi method to remove Ciprofloxacin (CIP) from an aqueous phase. Analytic Hierarchy Process (AHP) is one of the most
comprehensive systems designed for multi-criteria decision making. In this study, paired comparisons based on the AHP method
were performed for three criteria including (i) CIP removal, (ii) COD removal and (iii) Sludge to iron ratio (SIR) to select th... Autori: Marjan Salari ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28040
FORECASTING OF CHLOROPHENOLS REMOVING WITH ADVANCED OXIDATION PROCESSES: AN ARTIFICIAL NEURAL NETWORKS APPLICATION
Environmental Engineering and Management Journal › Vol. 19 › Nr. 8 Advanced oxidation processes (AOPs) are used with high efficiency in wastewater treatment due to the formation of hydroxyl radicals with high oxidation capacity. However, there exists many different variables which affect the efficiency of theses processes as it affects the amount of hydroxyl radicals formed; such as reaction time, pH, temperature, reactant concentrations and catalyst amount. In this study, the removal of 2-chlorophenol (2-CP) and 2,4-dichlorophenol (2,4-DCP), which are highly t... Autori: Aysun Altikat ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28251
OPTIMIZATION OF THE ELECTRO-FENTON PROCESS FOR COD REDUCTION FROM REFINERY WASTEWATER
Environmental Engineering and Management Journal › Vol. 19 › Nr. 11 This study shows the results of the experimental investigation of refinery wastewater treatment by the electro-Fenton process. The experiments were designed using Taguchi design approach with an orthogonal array (OA) of L16 runs. Four process variables
(current density (CD), temperature (T), Fe2+ concentration (Fe2+), and time (t)) at four different levels were considered for the present design. Regression analysis was performed to predict a correlation for the response function (chemical oxyge... Autori: Zainab I. Abbas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28322
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 |