نتایج جستجو برای: btex
تعداد نتایج: 662 فیلتر نتایج به سال:
Degradation of the BTEX (benzene, toluene, ethylbenzene, and o-, m-, and p-xylenes) group of organopollutants by the white-rot fungus Phanerochaete chrysosporium was studied. Our results show that the organism efficiently degrades all the BTEX components when these compounds are added either individually or as a composite mixture. Degradation was favored under nonligninolytic culture conditions...
In 1999, 275 poplar trees were planted on a field site near a car factory in order to install a bioscreen. The aim was to combine the biodegradation activities of poplar and its associated rhizosphere and endophytic microorganisms for containing a BTEX contaminated groundwater plume. This BTEX plume occurred as the result of leaking solvents and fuel storage tanks. Monitoring, conducted overa 6...
During two field campaigns in 1993 and 1994, measurements of aromatic compounds [benzene, toluene, ethylbenzene, m-/p-/o-xylenes (BTEX)] were carried out at urban and rural sites in the greater Munich area. These field campaigns represent a unique study using quasi-continuous gas chromatography/flame ionization detection methods concurrently at various sites. The impact of Munich’s urban plume ...
Our work has focused on the determination of physiological traits that may facilitate in situ degradation of xenobiotic compounds by indigenous microorganisms. For this our interests center on the following questions: What are the ambient conditions in a benzene, toluene, ethylbenzene, and xylene (BTEX)-contaminated aquifer? What is the behavior of indigenous bacteria under these conditions? Wh...
The soil fungus Cladophialophora sp. strain T1 (= ATCC MYA-2335) was capable of growth on a model water-soluble fraction of gasoline that contained all six BTEX components (benzene, toluene, ethylbenzene, and the xylene isomers). Benzene was not metabolized, but the alkylated benzenes (toluene, ethylbenzene, and xylenes) were degraded by a combination of assimilation and cometabolism. Toluene a...
An indirect competitive chemiluminescence enzyme-linked immunosorbent assay (CL-ELISA) for the determination of benzene, toluene, ethylbenzene, and ortho-, meta-, para-xylenes (BTEX) in soil and water was developed. The assay was optimized concerning the coating conjugate concentration, anti-BTEX antiserum dilution, incubation time effect on primary and secondary antibody incubation, and temper...
علیرغم پژوهشهای فراوان انجامشده در زمینه تجزیهزیستی BTEX، تحقیقات اندکی در زمینه بهینهسازی شرایط محیطی برای تجزیهزیستی این آلاینده با توجه به عوامل تأثیرگذار صورت گرفته است. هدف از این مطالعه تجزیه BTEX توسط ریزجانداران جداشده از خاک و بررسی تأثیر عواملی همچون نیترات، BTEX، شوری و جمعیت میکروبی و بهینهسازی شرایط برای تجزیه میباشد. به منظور شناسایی ریزجانداران مناسب برای تجزیه BTEX در ...
Pseudomonas putida strain (HM346961) was isolated from a consortium of bacteria acclimatized to unleaded gasoline-contaminated water. The consortium can efficiently remove benzene, toluene, ethylbenzene and xylene (BTEX) isomers, and a similar capability was observed with the P. putida strain. Proteome of this strain showed certain similarities with that of other strains exposed to the hydrocar...
M. Holtzer, B. Grabowska, S. Żymankowska-kumon, D. Kwaśniew skakrólikowska, R. Dańko, W. Solarski, A. Bobrowski, AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland Procedures have been developed to determine the volume, rate and composition (particularly BTEX: benzene, toluene, ethylbenzene and xylenes and PAHs (polycyclic aromatic hydrocarbons)) of gas evo...
S. Żymankowska-Kumon, AGH University of Science and Technology, Kraków, Poland The article contains the results of emission BTEX (benzene, toluene, ethylobenzene and xylenes) during thermal destruction (500 – 1 300 °C) of moulding sand with furan resin. This furan resin is with a high content of free furfuryl alcohol (about 80 %). Knowledge of emissions of these compounds allows the assessment ...
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