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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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pH and A255nm in the BTF within a cycle period
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Fig2: pH and A255nm in the BTF within a cycle period

Mentions: In the BTF, the dominant degradation strain produces HCl during the CB biodegradation process causing the system to become acidic, which can, in turn, affect the CB levels. CB biodegradation also produces a variety of metabolites, the accumulation of which can affect growth and even have a toxic effect on the dominant degradation strain. 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 EBRT of 75 s from a corresponding Q of 0.3 m3 h−1. To examine the effect on the CB levels as a function of pH value and the accumulation of metabolites, the pH value of the spray liquid and its A255nm (Seignez et al. 2002) were monitored over time (Fig. 2).Fig. 2


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)

pH and A255nm in the BTF within a cycle period
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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

Fig2: pH and A255nm in the BTF within a cycle period
Mentions: In the BTF, the dominant degradation strain produces HCl during the CB biodegradation process causing the system to become acidic, which can, in turn, affect the CB levels. CB biodegradation also produces a variety of metabolites, the accumulation of which can affect growth and even have a toxic effect on the dominant degradation strain. 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 EBRT of 75 s from a corresponding Q of 0.3 m3 h−1. To examine the effect on the CB levels as a function of pH value and the accumulation of metabolites, the pH value of the spray liquid and its A255nm (Seignez et al. 2002) were monitored over time (Fig. 2).Fig. 2

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