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

Min Zhao; Liyong Hu; Luyao Dai; Zhaoyun Wang; Jiamei He; Zeyu Wang; Jun Chen; Dzmitry Hrynsphan; Savitskaya Tatsiana

doi:10.1016/j.biortech.2021.126427

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

Bioresour Technol. 2022 Feb:345:126427. doi: 10.1016/j.biortech.2021.126427. Epub 2021 Nov 25.

Authors

Min Zhao¹, Liyong Hu¹, Luyao Dai¹, Zhaoyun Wang¹, Jiamei He¹, Zeyu Wang², Jun Chen³, Dzmitry Hrynsphan⁴, Savitskaya Tatsiana⁴

Affiliations

¹ College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China.
² Laboratory of Pollution Exposure and Health Intervention Technology, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310021, China.
³ Laboratory of Pollution Exposure and Health Intervention Technology, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310021, China; College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310021, China. Electronic address: bec@zjut.edu.cn.
⁴ Research Institute of Physical and Chemical Problems, Belarusian State University, Minsk, 220030, Belarus.

PMID: 34838976
DOI: 10.1016/j.biortech.2021.126427

Abstract

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.

Keywords: Bamboo charcoal powder-based polyurethane; Biotrickling filter; Microbial community; N-hexane and dichloromethane vapors; Simultaneous removal.

MeSH terms

Air Pollutants*
Biodegradation, Environmental
Bioreactors
Charcoal
Filtration
Hexanes
Methylene Chloride*
Polyurethanes
Powders

Substances

Air Pollutants
Hexanes
Polyurethanes
Powders
Charcoal
n-hexane
Methylene Chloride