نتایج جستجو برای: mtbe methyl tertiary

تعداد نتایج: 192237  

Journal: :Carcinogenesis 1996
G J Moser B A Wong D C Wolf R L Fransson-Steen T L Goldsworthy

Methyl tertiary butyl ether (MTBE) is an additive in some formulations of unleaded gasoline (UG) that enhances octane and reduces carbon monoxide emissions from motor vehicles. MTBE in CD-1 mice and UG in B6C3F1 mice increased the incidence of liver tumors selectively in female mice in their chronic bioassays. Both agents were negative in in vitro tests of genotoxicity, and exhibit similar hepa...

Bekhradnia, Ahmadreza , Mousavinasab, Seyed Noroddin , Safari, Reza , Tahernezhad, Zeinab , Yousefi, Zabihollah ,

Background: Bioremediation of groundwater and soil contamination is more economical than physicochemical remediation. The present study focused on the bioremediation capability of two bacterial species (Klebsiella planticola and Enterobacter cloacae) from the family Enterobacteriaceae. These bacteria have been identified as new species with capability of degrading methyl tertiary-butyl ether (...

2016
Jianping Yang Qinzhi Wei Xiaochun Peng Xiaowu Peng Jianhui Yuan Dalin Hu

Methyl tertiary butyl ether (MTBE)-A well known gasoline additive substituting for lead alkyls-causes lipid disorders and liver dysfunctions in animal models. However, whether MTBE exposure is a risk factor for non-alcoholic fatty liver disease (NAFLD) remains uncertain. We evaluate the possible relationship between MTBE exposure and the prevalence of NAFLD among 71 petrol station attendants in...

Journal: :Veterinary pathology 2009
T R Schoeb E E McConnell M M Juliana J K Davis M K Davidson J R Lindsey

Lymphomas were reported to be induced in rats in bioassays of aspartame, methyl-tertiary-butyl ether (MTBE), and other chemicals conducted by a nonprofit cancer research organization. European regulatory authorities concluded that lymphomas in the aspartame study were caused by Mycoplasma pulmonis and suggested that this also was the case for the MTBE bioassay. To assess the role of M. pulmonis...

2006
Ruiling Zhang Xingang Li Zhilong Ou Guoqiang Huang

Methyl-tert-butyl (MTBE) is widely used in gasoline to reduce ozone and carbon monoxide emissions. However, it is highly water-soluble and does not absorb well to sediments, making it move quickly through groundwater systems. In addition, MTBE resists biological degradation, compared to other gasoline components, probably because of the high energy required to cleave its ether bond. The contami...

2015
Cátia S. S. Pacífico

Cells of Mycobacterium vaccae were grown in toluene, ethanol, methyl tert-butyl ether (MTBE) and glycerol, exhibiting different degrees of tolerance towards these compounds, and being able to use both ethanol and glycerol as sole carbon and energy sources. Cellular adaptation to ethanol and MTBE led to significant changes in the membrane fatty acid (FA) composition, by modifications in the prop...

Journal: :World Journal of Biology Pharmacy and Health Sciences 2023

Banana varieties have a significant effect on the reducing sugar content in peel. In recent years, potential efforts been directed towards utilization of cheap renewable agricultural resources, such as banana peel waste alternative substrate for ethanol production. Various conversion pathways are compared from technical, economic, and environmental points view. This study also deals mainly with...

1998

The kinetics and mechanism of the sonolytic degradation of methyl tert-butyl ether (MTBE) have been investigated at an ultrasonic frequency of 205 kHz and power of 200 W L-1. The observed first-order degradation rate constant for the loss of MTBE increased from 4.1 × 10-4 s-1 to 8.5 × 10-4 s-1 as the concentration of MTBE decreased from 1.0 to 0.01 mM. In the presence of O3, the sonolytic rate ...

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