Affiliation:
1. Asian Institute of Technology, Thailand
2. University of North Carolina at Charlotte, USA
Abstract
The effects of volatile organic compounds (VOCs) on methane oxidation in landfill cover soils were examined. The batch experiments were conducted using single and mixed VOCs, such as, dichloromethane (DCM), trichloroethylene (TCE), tetrachloroethylene (PCE), and benzene. The results from all combinations showed a decrease in methane oxidation rate with increase in VOC concentrations. Moreover, inhibition effects of TCE and DCM were found higher than benzene and PCE. The reduction of methane oxidation by benzene and PCE could be attributed to the toxicity effect, whereas TCE and DCM were found to exhibit the competitive-inhibition effect. When the soil was mixed with DCM, no methane oxidation was found. Damage to the cell’s internal membrane was found in a methanotrophic culture exposed to VOC gases which is the attachment site of a key enzyme needed for methane oxidation
Reference19 articles.
1. The Landfill Gas Testing Program: a Second Report to the California Legislature,1989
2. Trace Organic Compounds in Landfill Gas at Seven U.K. Waste Disposal Sites;Allen M. R.;Environ. Sci. Technot.,1997
3. Product Toxicity and Cometabolic Competitive Inhibition Modeling of Chloroform and Trichloroethylene Transformation by Methanotrophic Resting Cells;Alvares-Cohen L.;Appl. Environ. Microbio.,1991
4. Methane Oxidation in a Natural Landfill Cover Soil: Influen of Moisture Content, Temperature, and Nitrogen-Turnover;Boeckx P.;J. Environ. Qual.,1996
5. Seasonal and Diurnal Methane Emissions From Landfill and Their Regulation by Methane Oxidation;Borjesson G.;Waste Management and Research,1997
Cited by
17 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献