Effects of gas flow-rate and inlet concentration on nitric oxide removal in an autotrophic biofilter

被引：6
作者：
Chen, JM [1 ]
Wang, JD [1 ]
Ma, JF [1 ]
机构：
[1] Zhejiang Univ Technol, Coll Biol & Environm Engn, Hangzhou 310032, Peoples R China
来源：
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 2006年 / 81卷 / 05期
关键词：
biofiltration; nitric oxide; nitrification; air pollution;
D O I：
10.1002/jctb.1463
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The effects of inlet gas concentration and gas flow-rate on the NO elimination process were studied in a laboratory-scale biofilter and the removal process is discussed. Various pollutant inlet concentrations and gas flow-rates were tested in the biofilter. The results showed that the removal efficiency increased with increase in the empty bed residence time (EBRT) and finally reached a steady state. The mass transfer process became the limiting step of NO removal when the EBRT was less than 2 min. A removal efficiency of similar to 73% was obtained in the biofilter at an inlet concentration of 107.1 mg m(-3). The removal efficiency decreased with increase in inlet concentration, whereas the removal capacity increased. The removal process consisted of chemical oxidation and bio-nitrification in the biofilter. The bioprocess mainly contributed to the removal. (c) 2006 Society of Chemical Industry.
引用
收藏
页码：812 / 816
页数：5
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