Abstract
Removal of gaseous chlorobenzene (CB) by a biotrickling filter (BTF) filled with modified ceramics and multi-surface hollow balls during gas–liquid mass transfer at the steady state was by microbial degradation rather than dissolution in the spray liquid or emission into the atmosphere. The BTF was flexible and resistant to the acid environment of the spray liquid, with the caveat that the spray liquid should be replaced once every 6–7 days. The BTF, loaded with Lysinibacillus fusiformis, performed well for purification of high-loading CB gas. The maximum CB gas inlet loading rate, 103 g m−3 h−1, CB elimination capacity, 97 g m−3 h−1, and CB removal efficiency, 97.7 %, were reached at a spray liquid flow rate of 27.6 ml min−1, an initial CB concentration of up to 1,300 mg m−3, and an empty bed retention time of more than 45 s.Electronic supplementary materialThe online version of this article (doi:10.1007/s10529-014-1559-5) contains supplementary material, which is available to authorized users.
Highlights
Prolonged exposure to chlorobenzene (CB) contamination has mutagenic, teratogenic and carcinogenic effects on human health (Field and Sierra-Alvarez 2008)
Removal of gaseous chlorobenzene (CB) by a biotrickling filter (BTF) filled with modified ceramics and multi-surface hollow balls during gas– liquid mass transfer at the steady state was by microbial degradation rather than dissolution in the spray liquid or emission into the atmosphere
The BTF was run for one cycle under conditions of a v of 30 ml min-1, Cin of 1,200 mg m-3, and an empty bed retention time (EBRT) of 75 s from a corresponding Q of 0.3 m3 h-1
Summary
Prolonged exposure to chlorobenzene (CB) contamination has mutagenic, teratogenic and carcinogenic effects on human health (Field and Sierra-Alvarez 2008). The maximum CB gas inlet loading rate, 103 g m-3 h-1, CB elimination capacity, 97 g m-3 h-1, and CB removal efficiency, 97.7 %, were reached at a spray liquid flow rate of 27.6 ml min-1, an initial CB concentration of up to 1,300 mg m-3, and an empty bed retention time of more than 45 s.
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