نتایج جستجو برای: حذف mtbe

تعداد نتایج: 24894  

2012

SUMMARY A health outcomes review was conducted for the Village of Liberty because of concerns about health effects from methyl tert-butyl ether (MTBE) in the water supply system. A health outcomes review examines a particular group of people as a whole to see how it compares to a group not living in the area of concern. It cannot link an environmental exposure to a specific health effect and it...

Journal: :Environmental Health Perspectives 2000

Journal: :Global Nest Journal 2023

<p>The purpose of this research was to evaluate the effectiveness low-cost adsorbents for removal MTBE by employing natural kaolin clay with surface modification KOH. The feasibility examination High Pressure Liquid Chromatography (HPLC) in aqueous solution investigated. To get rid impurities, goes through a beneficiated process. Then, thermal procedure carried out at 990°C prepare adsorb...

2010
Rula A. Deeb Lisa Alvarez-Cohen

The primary objective of this study was to evaluate the impact of substrate interactions on the biotransformation rates and mineralization potentials of gasoline monoaromatics and methyl tert-butyl ether (MTBE), compounds that commonly co-exist in groundwater contaminant plumes. A mixed culture was derived from gasoline-contaminated aquifer material using toluene as the enrichment substrate. Tw...

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...

Journal: :Applied and environmental microbiology 2001
K R Hristova C M Lutenegger K M Scow

The fuel oxygenate methyl tert-butyl ether (MTBE), a widely distributed groundwater contaminant, shows potential for treatment by in situ bioremediation. The bacterial strain PM1 rapidly mineralizes and grows on MTBE in laboratory cultures and can degrade the contaminant when inoculated into groundwater or soil microcosms. We applied the TaqMan quantitative PCR method to detect and quantify str...

Journal: :jundishapur journal of health sciences 0
mohammad reza samaei department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran; department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran. tel: +98-9177320737 hoshang maleknia department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran abooalfazl azhdarpoor department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran

conclusions changes of ph could remarkably affect the efficiency and oxidation rate of mtbe. in particular, the amount of kap in terms of oxidation declines substantially by moving away from the optimum ph range. in this study, ph 3.5 was considered as the optimal ph in h2o2/nzvi/ultrasonic oxidation process, with the elimination of about 89.56% of the high mtbe concentration. in general, we ca...

2012

SUMMARY A health outcomes review was conducted for the Village of Liberty because of concerns about health effects from methyl tert-butyl ether (MTBE) in the water supply system. A health outcomes review examines a particular group of people as a whole to see how it compares to a group not living in the area of concern. It cannot link an environmental exposure to a specific health effect and it...

Journal: :Environmental toxicology and chemistry 2001
B G Bierwagen A A Keller

Increasing groundwater contamination with methyl tert-butyl ether (MTBE) requires more efficient remediation technologies. Accurate measurement of MTBE's air-water partitioning coefficient (Henry's law constant, H) is important for the design and optimization of removal efficiency for many treatment systems as well as for predicting its fate and transport. Previously published data for MTBE app...

2000
Linda Fernandez Arturo A. Keller

This paper presents a cost-benefit analysis of the 1990 Clean Air Act Amendments (CAAA) requiring the addition of oxygen content in gasoline, using California as a case study. The valuation and comparison of costs and benefits for several fuel blends (with and without oxygen content) provides a framework to investigate cross-media (air, water, soil) tradeoffs. We use known valuation methods suc...

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