Bamboo charcoal powder-based polyurethane as packing material in biotrickling filter for simultaneous removal of n-hexane and dichloromethane

[Display omitted] •BC-PU was firstly used in BTF to remove n-hexane and DCM.•ECs of 12.68 g m−3h−1n-hexane and 30.28 g m−3h−1 DCM could be achieved.•BTF showed short recovery time supported by BC-PU after shock loadings.•The high IL of DCM inhibited the degradation of n-hexane. Bamboo charcoal powde...

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Bibliographic Details
Published in:Bioresource technology 2022-02, Vol.345, p.126427-126427, Article 126427
Main Authors: Zhao, Min, Hu, Liyong, Dai, Luyao, Wang, Zhaoyun, He, Jiamei, Wang, Zeyu, Chen, Jun, Hrynsphan, Dzmitry, Tatsiana, Savitskaya
Format: Article
Language:English
Subjects:
Air Pollutants
Bamboo charcoal powder-based polyurethane
bamboos
biobased products
Biodegradation, Environmental
biofilters
Bioreactors
Biotrickling filter
Charcoal
Filtration
hexane
Hexanes
hydrophobicity
Hyphomicrobium
Methylene Chloride
Microbial community
Mycobacterium
N-hexane and dichloromethane vapors
pharmaceutical industry
Polyurethanes
Powders
Simultaneous removal
technology
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Summary:[Display omitted] •BC-PU was firstly used in BTF to remove n-hexane and DCM.•ECs of 12.68 g m−3h−1n-hexane and 30.28 g m−3h−1 DCM could be achieved.•BTF showed short recovery time supported by BC-PU after shock loadings.•The high IL of DCM inhibited the degradation of n-hexane. Bamboo charcoal powder-based polyurethane (BC-PU) was firstly applied in biotrickling filter to treat n-hexane and dichloromethane (DCM) simultaneously. Maximum elimination capacity of 12.68 g m−3h−1 n-hexane was achieved and exceed 30.28 g m−3h−1 DCM could be degraded. BTF respond quickly to the mixed shock loadings, and recovered to 76% and 100% respectively in less than 1 h. By increasing inlet loading (IL) of DCM from 6.20 g m−3h−1 to 28.36 g m−3h−1, the removal efficiency of n-hexane decreased from 73.4% to 55.9% corresponding to the IL of 19.96 g m−3h−1. N-hexane degradation was inhibited by high IL of DCM due to enzymes competition for active sites. The growth of key microorganisms Mycobacterium sp., Hyphomicrobium sp. was stimulated and colonized. BC-PU is an innovative and applicable bio-based material in the process of biological purification, which could be widely applied to treat hydrophobic pollutants in the pharmaceutical industry.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2021.126427