نتایج جستجو برای: Methyl tert-butyl ether ( MTBE)

تعداد نتایج: 145227  

Journal: :iranian journal of public health 0
a nikpey m nikpey

methyl tert-butyl ether (mtbe), a gasoline octane enhancer, was introduced as a substitute for lead tetraethyl over 30 years ago. widespread use of mtbe in gasoline, has introduced mtbe into the environment compartments, mostly into the under ground and surface water and water as a second most frequently detected contaminant. in this study, we have isolated pure cultures from bacterial consorti...

Journal: :Applied and environmental microbiology 2002
Alan François Hugues Mathis Davy Godefroy Pascal Piveteau Françoise Fayolle Frédéric Monot

A strain that efficiently degraded methyl tert-butyl ether (MTBE) was obtained by initial selection on the recalcitrant compound tert-butyl alcohol (TBA). This strain, a gram-positive methylotrophic bacterium identified as Mycobacterium austroafricanum IFP 2012, was also able to degrade tert-amyl methyl ether and tert-amyl alcohol. Ethyl tert-butyl ether was weakly degraded. tert-Butyl formate ...

Journal: :Chemical communications 2003
Feng Shi Hai Xiong Yanlong Gu Shu Guo Youquan Deng

Methyl tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE), and isopropyl tert-butyl ether (IPTBE) have been synthesized for the first time over a non-acid ionic liquid as catalyst and dehydrator with high conversion (> 90%) and selectivity (> 90%) under mild conditions.

Journal: : 2023

The paper considers the possibility of repurposing a plant for production methyl tert-butyl ether (MTBE) esterification light fraction gasoline by catalytic cracking. conversion MTBE installation to process cracking will allow obtaining an additional amount high-octane component automotive

Journal: :Environmental toxicology and chemistry 2005
Monica Rosell Sílvia Lacorte Claudia Forner Hans-Peter Rohns Rudolf Irmscher Damià Barceló

In a gasoline-contaminated site in Düsseldorf, Germany a two-year monitoring program was carried out to determine the presence, behavior, and fate of 12 gasoline additives in a total of 96 samples from 14 groundwater wells. The origin of contamination was suspected to be a gasoline spill at a gas station. Target compounds were methyl-tert-butyl ether (MTBE), its main degradation products, tert-...

2002
Hsing-Lung Lien Weixian Zhang

The transformation of methyl tert-butyl ether ~MTBE! and tert-amyl methyl ether ~TAME! using bifunctional aluminum in the presence of dioxygen ~O2! has been examined. Bifunctional aluminum, prepared by sulfating zero-valent aluminum with sulfuric acid, is an innovative extension of zero-valent metal technology. It has a dual functionality of simultaneously decomposing both reductively and oxida...

Journal: :Polish journal of microbiology 2013
Andrzej Wieczorek Krystyna Przybulewska Katarzyna Karpowicz Maciej J Nowak

As a result of examinations carried out, 16 strains of microorganisms able to grow on mineral media with methyl tert-butyl ether as the sole source of carbon and energy were isolated. Bacteria prevailed among the isolated microorganisms. The growth of microorganisms under laboratory conditions was long and accompanied by low biomass increase. Under the conditions of the experiment, the isolated...

Journal: :Environmental science & technology 2002
Hsing-Lung Lien Richard Wilkin

Bifunctional aluminum is prepared by sulfating aluminum metal with sulfuric acid. The use of bifunctional aluminum to degrade methyl tert-butyl ether (MTBE) in the presence of dioxygen has been examined using batch systems. Primary degradation products were tert-butyl alcohol, tert-butyl formate, acetone, and methyl acetate. The initial rate of MTBE degradation exhibited pseudo-first-order beha...

Journal: :Journal of chromatography. A 2003
Mònica Rosell Sílvia Lacorte Antoni Ginebreda Damià Barceló

In Catalonia (northeast Spain), a monitoring program was carried out to determine methyl tert.-butyl ether (MTBE), its main degradation products, tert.-butyl alcohol (TBA), tert.-butyl formate (TBF), and other gasoline additives, the oxygenate dialkyl ethers ethyl tert.-butyl ether, tert.-amyl methyl ether and diisopropyl ether and the aromatic compounds benzene, toluene, ethylbenzene and xylen...

Journal: :FEMS microbiology letters 2015
Geetika Joshi Radomir Schmidt Kate M Scow Michael S Denison Krassimira R Hristova

Among the few bacteria known to utilize methyl tert-butyl ether (MTBE) as a sole carbon source, Methylibium petroleiphilum PM1 is a well-characterized organism with a sequenced genome; however, knowledge of the genetic regulation of its MTBE degradation pathway is limited. We investigated the role of a putative transcriptional activator gene, mdpC, in the induction of MTBE-degradation genes mdp...

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