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The operating performance of a biotrickling filter with Lysinibacillus fusiformis for the removal of high-loading gaseous chlorobenzene.

Li ZX, Yang BR, Jin JX, Pu YC, Ding C - Biotechnol. Lett. (2014)

Bottom Line: 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, 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.

View Article: PubMed Central - PubMed

Affiliation: School of Chemical and Biological Engineering, Yancheng Institute of Technology, YanCheng, 224051, People's Republic of China.

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.

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RE and EC at different EBRTs. (RE) = chlorobenzene (CB) removal efficiency; EC = CB elimination capacity; EBRT = empty bed retention time
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Fig7: RE and EC at different EBRTs. (RE) = chlorobenzene (CB) removal efficiency; EC = CB elimination capacity; EBRT = empty bed retention time

Mentions: EBRT is also an important parameter to control during the operation of the BTF. Mass transfer between the microorganisms and the packing materials is low if the EBRT is too short, and the BTF will operate inefficiently if the EBRT is too long. Given a fixed BTF volume, there is a linear, positive correlation between the EBRT and Q. Therefore, the CB levels as a function of EBRT were investigated at EBRTs of 90, 75, 56, 45, and 37 s (corresponding to Q of 0.25, 0.3, 0.4, 0.5, and 0.6 m3 h−1, respectively), at a constant v of 30 ml min−1 and a Cin of 1,250 mg m−3 (Figs. 6, 7).Fig. 6


The operating performance of a biotrickling filter with Lysinibacillus fusiformis for the removal of high-loading gaseous chlorobenzene.

Li ZX, Yang BR, Jin JX, Pu YC, Ding C - Biotechnol. Lett. (2014)

RE and EC at different EBRTs. (RE) = chlorobenzene (CB) removal efficiency; EC = CB elimination capacity; EBRT = empty bed retention time
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4150996&req=5

Fig7: RE and EC at different EBRTs. (RE) = chlorobenzene (CB) removal efficiency; EC = CB elimination capacity; EBRT = empty bed retention time
Mentions: EBRT is also an important parameter to control during the operation of the BTF. Mass transfer between the microorganisms and the packing materials is low if the EBRT is too short, and the BTF will operate inefficiently if the EBRT is too long. Given a fixed BTF volume, there is a linear, positive correlation between the EBRT and Q. Therefore, the CB levels as a function of EBRT were investigated at EBRTs of 90, 75, 56, 45, and 37 s (corresponding to Q of 0.25, 0.3, 0.4, 0.5, and 0.6 m3 h−1, respectively), at a constant v of 30 ml min−1 and a Cin of 1,250 mg m−3 (Figs. 6, 7).Fig. 6

Bottom Line: 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, 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.

View Article: PubMed Central - PubMed

Affiliation: School of Chemical and Biological Engineering, Yancheng Institute of Technology, YanCheng, 224051, People's Republic of China.

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.

Show MeSH
Related in: MedlinePlus