Wu Chao, Xu Peilun, Xia Yinfeng, Li Wei, Li Sujing, Wang Xiangqian
Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University (Yuquan Campus), Hangzhou, 310027, China.
J Ind Microbiol Biotechnol. 2017 Sep;44(9):1313-1324. doi: 10.1007/s10295-017-1955-7. Epub 2017 Jun 21.
Engineered microbial ecosystems in bioscrubbers for the treatment of volatile organic compounds (VOCs) have been complicated by complex VOC mixtures from various industrial emissions. Microbial associations with VOC removal performance of the bioscrubbers are still not definitive. Here, one- and two-phase partitioning airlift bioreactors were used for the treatment of a complex VOC mixture. Microbial characteristics in both bioreactors were uncovered by high-throughput metagenomics sequencing. Results showed that dominant species with specialized VOC biodegradability were mainly responsible for high removal efficiency of relative individual VOC. Competitive enzyme inhibitions among the VOC mixture were closely related to the deterioration of removal performance for individual VOC. Relative to the mass transfer resistance, the specialized biodegrading functions of microbial inoculations and enzymatic interactions among individual VOC biodegradation also must be carefully evaluated to optimize the treatment of complex VOC mixtures in bioreactors.
生物洗涤器中用于处理挥发性有机化合物（VOCs）的工程化微生物生态系统因各种工业排放产生的复杂VOC混合物而变得复杂。微生物与生物洗涤器VOC去除性能之间的关联仍不明确。在此，采用单相和两相分区气升式生物反应器处理复杂的VOC混合物。通过高通量宏基因组测序揭示了两种生物反应器中的微生物特征。结果表明，具有特定VOC生物降解能力的优势物种是相对单一VOC去除效率高的主要原因。VOC混合物之间的竞争性酶抑制与单一VOC去除性能的下降密切相关。相对于传质阻力，微生物接种的特定生物降解功能以及单一VOC生物降解之间的酶相互作用也必须仔细评估，以优化生物反应器中复杂VOC混合物的处理。
