期刊
BIORESOURCE TECHNOLOGY
卷 127, 期 -, 页码 366-377出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.09.110
关键词
Biofiltration; Biodegradation; Ethylene; Henry's law constant
资金
- NASA NSCORT Center at Purdue University
This study describes cleaning of a waste gas stream using bench scale biofilters (BFs) or biotrickling filters (BTFs). The gas stream contained a mixture of acetone, n-butanol, methane, ethylene, and ammonia, and was diverted uniformly to six biofilters and four biotrickling filters. The biofilters were packed with either perlite (BF-P), polyurethane foam (BF-F), or a mixture of compost, wood chips, and straw (BF-C), whereas the biotrickling filters contained either perlite (BTF-P) or polyurethane foam (BTF-F). Experimental results showed that both BFs and BTFs packed with various media were able to achieve complete removal of highly soluble compounds such as acetone, n-butanol, and ammonia of which the dimensionless Henry's constants (H) are less than 0.01. Methane was not removed due to its extreme insolubility (H > 30). However, the ethylene (H approximate to 9) removal efficiencies depended on trickle water flow rates, media surface areas, and ammonia gas levels. (C) 2012 Elsevier Ltd. All rights reserved.
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