基于竹炭粉的聚氨酯作为生物滴滤器中的填充材料用于同时去除正己烷和二氯甲烷。
Bamboo charcoal powder-based polyurethane as packing material in biotrickling filter for simultaneous removal of n-hexane and dichloromethane.
作者信息
Zhao Min, Hu Liyong, Dai Luyao, Wang Zhaoyun, He Jiamei, Wang Zeyu, Chen Jun, Hrynsphan Dzmitry, Tatsiana Savitskaya
机构信息
College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China.
Laboratory of Pollution Exposure and Health Intervention Technology, Interdisciplinary Research Academy, Zhejiang Shuren University, Hangzhou, 310021, China.
出版信息
Bioresour Technol. 2022 Feb;345:126427. doi: 10.1016/j.biortech.2021.126427. Epub 2021 Nov 25.
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 mh n-hexane was achieved and exceed 30.28 g mh 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 mh to 28.36 g mh, the removal efficiency of n-hexane decreased from 73.4% to 55.9% corresponding to the IL of 19.96 g mh. 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.
基于竹炭粉的聚氨酯（BC-PU）首次应用于生物滴滤塔中同时处理正己烷和二氯甲烷（DCM）。实现了正己烷的最大去除容量为12.68 g/m·h，并且超过30.28 g/m·h的二氯甲烷能够被降解。生物滴滤塔对混合冲击负荷响应迅速，在不到1小时内分别恢复到76%和100%。通过将二氯甲烷的入口负荷（IL）从6.20 g/m·h增加到28.36 g/m·h，对应于19.96 g/m·h的入口负荷，正己烷的去除效率从73.4%降至55.9%。由于酶对活性位点的竞争，高入口负荷的二氯甲烷抑制了正己烷的降解。关键微生物分枝杆菌属、生丝微菌属的生长受到刺激并定殖。BC-PU是生物净化过程中一种创新且适用的生物基材料，可广泛应用于制药行业中疏水性污染物的处理。
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