Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/71751
Title: Removal of greenhouse gas in biofilter using organic and inorganic media
Authors: Nguyen, Thanh Tung
Chiemchaisri, Wilai
Chiemchaisri, Chart
Sanguanpak, Samunya
Keywords: Biofilter
Compost
Greenhouse gas
Inorganic media
Methane oxidation
Issue Date: 2021
Series/Report no.: Vietnam Journal of Science, Technology and Engineering;Vol. 63, No. 01 .- P.83-89
Abstract: A biofilter using organic (compost) and inorganic (pumice, porous silica pellet or poremat) media was applied to the removal of methane (CH₄ and nitrous oxide (N₂O) to minimize the impact of off-gasses from municipal solid waste disposal global. The objective was to determine the appropriate biofilter media for CH₄ oxidation and N₂O conversion. The off gas (59.6% CH4, 1.0% N₂O) was fed simultaneously with air (1:3 ratio) into the biofilter. CH₄ oxidation and N₂O conversion rates were observed over a 101-day period through the analysis of gas concentration along the biofilter’s depth using gas chromatography. Higher CH₄ oxidation in the biofilters containing organic and inorganic media was achieved, especially for the compost-poremat biofilter with 70.1 g CH₄/m³/d realised. The most active methane oxidation zone was found near the gas inlet at the bottom of the biofilter. The presence of inorganic material helped promote aerobic conditions for CH₄ oxidation, especially during the initial period. N₂O was also more completely removed with the biofilter containing inorganic media. Higher methanotrophic activities in matured biofilter media and the presence of methanotrophs type I, which prefer oxygen-rich conditions, were confirmed.
URI: https://dspace.ctu.edu.vn/jspui/handle/123456789/71751
ISSN: 2525-2461
Appears in Collections:Vietnam journal of Science, Technology and Engineering

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