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Rezultatele pentru halogenated derivativesRezultate gasite: 22
Catalytic destruction of aromatic VOCs on SCR-DeNOx commercial catalyst
Environmental Engineering and Management Journal › Vol. 6 › Nr. 1 AbstractAromatic volatile organic compounds (VOCs) proved to have enhanced polluting behavior upon the atmosphere and human health. Their catalytic destruction is an alternative for environmental pollution reduction in the case of gaseous emissions with low contents of VOC.In this paper, an experimental study is presented, concerning the conversion of benzene and its mono-halogenated derivatives on SCR-DeNOx (V2O5-WO3/TiO2) commercial catalyst, specific for the reduction process of nitrogen oxid... Autori: Florin Bandrabur, Heinz Koser, Ion Balasanian, Liliana Lazar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25105
New Ni(II) coordination polymers with insulating and anticorrosive properties
Environmental Engineering and Management Journal › Vol. 6 › Nr. 2 A series of new Ni(II) poly-phosphinates have been synthesised using Ni(II) acetylacetonate as nickel precursor and a succession of ligands derived from phosphinic acid: ethyl-butyl-phosphinic acid, ethyl-butyl-thio-phosphinic acid, and respectively ethylbutyl-di-thio-phosphinic acid. Chemical analysis gel-chromatography, infrared spectroscopy (IR), spin electronic resonance (RES), X-ray diffraction (XRD), thermal gravimetric analysis (TGA), electrical resistance measurements at different temper... Autori: Daniel Sutiman, Doina Sibiescu, , Mircea Teodor Nechita ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25118
Study of the non-catalytic and catalytic oxidative destruction of VOCs
Environmental Engineering and Management Journal › Vol. 6 › Nr. 5 In recent years, the release of volatile organic compounds (VOCs) has received much attention. Catalytic oxidation of VOCs, found in small concentration in industrial gas emissions constitutes an alternative for environmental pollution reduction.In this paper, a comparative study regarding the non-catalytic and catalytic oxidative destruction of non-halogenated or halogenated C6 hydrocarbons (C6H14, C6H12, C6H6, Cl-C6H5, Br-C6H5), is presented. Catalytic oxidation was studied in the presence of ... Autori: Florin Bandrabur, Heinz Koser, Ion Balasanian, Liliana Lazar ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25162
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
New ecomaterials for wood preservation
Environmental Engineering and Management Journal › Vol. 8 › Nr. 4 Abstract
Wood has been used as an engineering material because it is low in cost, renewable and strong and it requires low processing energy. Wood has many excellent properties that result from its exceptional combination of microstructural, ultrastructural and molecular features. The main drawback is its dimensional instability in the presence of moisture, which can affects also the biological stability. Wood is susceptible to degradation in a number of ways, including rot or decay, insect a... Autori: Lucia Dumitrescu, Ileana Manciulea ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25473
Impact of chemicals on derivatives with important therapeutic activity in Calendula Officinalis L. flores
Environmental Engineering and Management Journal › Vol. 9 › Nr. 1 Abstract
In the study, the accumulation of secondary metabolites present in Calendula officinalis L. flowers with importance in therapeutics was examined, after the treatment with some substances considered being mutagens. The effect of substances appliedat different concentrations and different times of action was studied, qualitatively and quantitatively, considering various methanol extracts, obtained from the inflorescenses of Calendula officinalis L, which contained polyphenolic fraction... Autori: Brindusa Robu, Constantin Leonte, Elvira Gile, Roxana Vatavu, Teodor Robu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25598
DETERMINATION OF AROMATIC VOLATILE COMPOUNDS IN PETROCHEMICAL WASTEWATER
Environmental Engineering and Management Journal › Vol. 10 › Nr. 8 Abstract:A method based on headspace and capillary gas chromatography with flame ionization detector technique was validated for thesimultaneous determination of five individual aromatic volatile pollutants: benzene, toluene, ethylbenzene, m/p-xylene and oxylene.The validation took in consideration liniarity, accuracy, precision, limit of detection, limit of quantification anduncertainty estimation criteria and concluded that the proposed method is suitable to determine the pollutants of interes... Autori: Camelia Draghici, Elena Paunescu, Elisabeta Chirilă, Gabriela Stanciu, Simona Dobrinas ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25729
EFFECTS OF THE ENVIRONMENTAL STRESS ON TWO FISH POPULATIONS REVEALED BY STATISTICAL AND SPECTRAL ANALYSIS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 1 The aquatic species are permanently subjected to various stresses through the ecosystem and the food habit. Elucidating the impact at the cellular level allows us to understand the ways in which the polluting elements and their derivatives can disrupt the metabolism of aquatic organisms triggering apoptosis in individual cells or necrosis affecting groups of neighbouring cells. The aim of this preliminary study is to highlight the influence of the environmental factors on two fish population by ... Autori: , Camelia Ureche, Dorel Ureche, Gabriel Lazar, Ileana Denisa Nistor, Irina Loredana Ifrim, Iuliana Mihaela Lazar, Marius Stamate, Valentin Nedeff ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25861
ASSESSMENT OF THE ENVIRONMENTAL IMPACT OF SOME NEW ARYLOXYALKYL CARBOXILIC ACID DERIVATIVES APPLIED AS PLANT PROTECTION COMPOUNDS
Environmental Engineering and Management Journal › Vol. 11 › Nr. 2 Five new aryloxyalkylcarboxylic acid derivatives (diazoaminoderivatives) are studied for their thermal behavior by applying a coupled TG-FTIR technique over the (30-400 oC) range in correlation with the environmental impact of gaseous species resulting by thermal degradation. These compounds are of a particular practical significance since they show a high biological potential as agrochemicals, such as pesticides (herbicides, acaricides, fungicides, growing stimulators etc.). This is why the pap... Autori: Anca Mihaela Mocanu, Carmen Zaharia, Constantin Iordache, Constantin Luca, Lucia Odochian ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=25899
ASSESSMENT OF MACROMYCETES USING FOURIER TRANSFORM INFRARED SPECTROSCOPY AND CHEMOMETRICS
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 AbstractEight species of macromycetes which grow in phytocoenosis from Călimani National Park (Eastern Carpathians, Romania)have been analysed using Fourier Transform Infrared spectroscopy (FTIR). Among the analysed species, five species are beingconsidered edible (Clitopilus prunulus, Pleurotus eryngii, Macrolepiota rhacodes, Lacaria laccata and Suillus luteus) and threespecies are being considered toxic (Lyophyllum connatum, Paxillus involutus şi Gyromitra infula). The results of f... Autori: Aurel Pui ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26091
THE ROLE OF GREEN CHEMISTRY IN BIOMASS PROCESSING
Environmental Engineering and Management Journal › Vol. 12 › Nr. 3 The book edited by Haibo Xie and NicholasGathergood focuses on one of the most importantscientific issues of the 21 century which is thereplacing fossil fuel with sustainable alternatives suchas biomass. Fossil fuels are conventional rawmaterials for many industrial sectors includingchemical and energy production. Usage of fossil fuelis limited by their availability, price and carbonfootprint. Biomass is a renewable resource globallyavailable, cheaper and carbon sequestering. Step bystep shiftin... Autori: Adrian Catalin Puitel ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26101
STUDY OF THE SYNTHESIS AND ENVIRONMENTAL REMOVAL OF 4,4-DIPYRIDINE DERIVATIVES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 2 Abstract
Dipyridine derivatives are used on large scale and pose significant environmental problems. We have synthesized dipyridine
derivatives with: 5-chlorovaleric acid, α-dichlorhidrin, iodoacetamide and 11-bromoundecanoic acid. The synthesized substituted
compounds were investigated by LC-MS. The adsorptive removal of dipyridine derivatives from aqueous solution has been
studied using medicinal activated carbon. The adsorption rate has been investigated under the controlled process... Autori: Ana Chira ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26638
SYNTHESIS AND ELECTRON TRANSPORT PROPERTIES OF SOME NEW 4,7-PHENANTHROLINE DERIVATIVES IN THIN FILMS
› › Nr. 2 Abstract
Temperature-dependent d.c. electric conductivity of some recently synthesized organic compounds, 4,7-phenanthroline
derivatives is studied. Thin-film samples (d=0.34-0.63 m) spin-coated from dimethylformamide solutions onto glass substrates
have been used. Organic films with reproducible electron transport properties can be obtained if, after deposition, they are
submitted to a heat treatment within temperature range of 298523K. Examined organic compounds in thin fil... Autori: Cristina M. Al Matarneh ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26656
SELECTIVE RECOVERY OF PHENOLIC DERIVATIVES THROUGH THE TECHNIQUE OF LIQUID MEMBRANES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 3 Abstract
In the present paper we studied the competitive transport of p-nitrophenol (pNP) and 2,4-dinitrophenol (2,4-dNP) from aqueous
media using the technique of liquid membranes. This technique is very efficient, economic and selective when compared to other
removal techniques of phenolic derivatives. The paper presents the influence of the sodium carbonate concentration from the
stripping phase, the influence of the concentration ratio [2,4-dNP]/[pNP] upon the selectivity of the transpor... Autori: Ioana Diaconu ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26681
EFFICIENT BIOTRANSFORMATION OF PHENOL AND ITS DERIVATIVES USING Streptococcus epidermis BY CATECHOL 2,3-DIOXYGENASE METABOLISM
Environmental Engineering and Management Journal › Vol. 14 › Nr. 4 Abstract
The present study explores the potential of Streptococcus epidermis, an indigenous isolate for biotransformation of phenol and
phenol derivatives. Different phenolic derivatives such as 4-methylphenol, methylbenzene, 2,4-dichlorophenol, 2,6-
dichlorophenol and 4-nitrophenol were attempted for biotransformation study. The results have shown that 4-nitrophenol was
best transformed. The effect of degradation parameters like pH and temperature was studied, showing the value of 7.0 as
o... Autori: Bhavana V. Mohite ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26705
DIRECT AND DELAYED DEGRADATION OF AZORUBIN (E122) BY GLIDING ARC DISCHARGES
Environmental Engineering and Management Journal › Vol. 14 › Nr. 11 Abstract
The goal of this paper is to investigate the decomposition of aqueous solutions of Azorubin (E122), i.e., an azo dye used in food
industry, in a pulsed gliding arc discharge reactor (direct treatment). Air and Argon as carrier gases with solution spray has been
considered, as a first approach. The bleaching of the aqueous solution was observed immediately after direct plasma treatment
and the decreasing of the dye concentration have been emphasized. Further more, the dye concentrati... Autori: Marius Ursache ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=26898
PRACTICAL WAYS OF EXTRACTING KERATIN FROM KERATINOUS WASTES AND BY-PRODUCTS: A REVIEW
Environmental Engineering and Management Journal › Vol. 15 › Nr. 5 Renewable resources, biopolymers and bio-based materials are keywords of the sustainable development and environmental
sustainability concepts. Biopolymers, the green alternatives to fossil fuel based polymers, have already found different feasible
applications, from consumer goods to regenerative medicine. Keratin is the biopolymer contained in the skin derivatives and
appendages and is one of the the proteins with the most sophisticated architecture nature could produce. It is found in huge... Autori: Hossein Rajabinejad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27043
MATHEMATICAL MODEL FOR PARTICLE MOTION APPLIED ON A MANURE SPREADING APPARATUS USED IN ENVIRONMENTALLY FRIENDLY TECHNOLOGY
Environmental Engineering and Management Journal › Vol. 17 › Nr. 1 It is acknowledged that organic fertilizers and wastes, such as animal slurries/manure from intensive farm enterprise, sewage sludge, poultry litter are and will continue to be spread on agricultural land and provide beneficial nutrients to crops. However, many of these materials which are also potentially polluting if not properly managed can pose a risk to groundwater and surface
water quality. Generally, their distribution on the soil is performed with specialized machines to reduce the risk... Autori: Vasilica Ştefan ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27545
CONTAMINATION OF GROUNDWATER WITH PHENOL DERIVATIVES AROUND A DECOMMISSIONED CHEMICAL FACTORY
Environmental Engineering and Management Journal › Vol. 17 › Nr. 3 In this study, the concentrations of 15 phenol derivatives were analyzed from the phreatic and groundwater wells surrounding a
decommissioned chemical factory in a village from the western part of Romania. An UPLC-MS method was used to assess the
concentrations of the chemical target compounds in the water samples. The most frequent compounds were 4-chlorophenol, 4-tertoctylphenol
and 4-nonylphenol, being detected in 17 of the 19 sampling sites, while the least frequent compound was 2,4,6-
t... Autori: Elena Preda ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27661
BEHAVIOUR OF NEW PULLULAN DERIVATIVE SOLUTIONS WITH BIOTECHNOLOGICAL POTENTIAL
Environmental Engineering and Management Journal › Vol. 18 › Nr. 2 The synthesis of dimethylamino-propylamine pullulan, DMAPA-P, with a substitution degree of 0.4 was performed in
dimethylsulfoxide using N,N’-carbonyldiimidazole as activator and dimethylaminopropylamine as amination agent. Then, two
quaternary derivatives (trimethylammonium-propylamine pullulan, TMAPA-P, and benzyldimethylammonium-propylamine
pullulan, BzDMAPA-P) were prepared from DMAPA-P by quaternization with methyl iodide and benzyl chloride. The behavior
of new pullulan derivativ... Autori: Anca Giorgiana Grigoras ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=27902
CURRENT APPROACHES FOR RAW WOOL WASTE MANAGEMENT AND UNCONVENTIONAL VALORIZATION: A REVIEW
Environmental Engineering and Management Journal › Vol. 18 › Nr. 7 Since the middle of the past century, when the synthetic fibers began their rise, wool has steadily lost importance in the textile
sector, and now is a marginal fiber on the textiles market. Great amounts of non-marketed raw wool have turned from an income
source for sheep farmers into a problematic waste, which is, at best, burn or landfill. With increasing interest for sustainable use of
natural resources, wool was reconsider as an underrated, underused renewable resource, worthy of a bette... Autori: Hossein Rajabinejad ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28031
OUTLIER ROBUST IDENTIFICATION OF THE THERMAL POWER PLANT: COMBUSTION CONTROL AND VIBRATORY TRANSPORT
Environmental Engineering and Management Journal › Vol. 19 › Nr. 3 The goal of this paper is to contribute to environmental improvement. This goal has been achieved by the development of an algorithm that allows the optimization of fuel consumption and transport of combustion products. The paper considers the outlier – robust recursive algorithm. This algorithm is used for identification of multivariable ARMAX (Autoregressive Moving Average with Exogenous Variables) models. In this paper, we introduce pseudo-Huber loss function which is a continuous nonli... Autori: Vojislav Filipovic ISSN: 1843 - 3707 http://www.ecozone.ro/reviste.php?RID=28167 |