Removal of Toluene from Synthetic Waste Gas Through Aerobic Denitrification in Biotrickling Reactor

作者：Bolong Li, Zaishan Wei, Zhenshan Huang, Xiaoliang Xiao, Song Ming, Huaiyong Jiao, Xiang-Ling Cheng · 发表于：Environmental Engineering Science · 年份：2020 · DOI：10.1089/ees.2019.0395 · 被引用次数：24 · 研究领域：Odor and Emission Control Technologies、Wastewater Treatment and Nitrogen Removal、Microbial Fuel Cells and Bioremediation

Toluene biodegradation from synthetic waste gas by aerobic denitrification using nitrate as an electron acceptor in a biotrickling filter (BTF) was investigated. Toluene removal efficiency achieved 92.3% in 105 days of operation. Pseudomonas, Paracoccus, Flavobacterium, SM1A02, Acinetobacter, Blastocatella, Moheibacter, Chlamydiales, Rhodobacter, and Ottowia were dominant toluene-degrading genus. Bradyrhizobium, Comamonas, Cupriavidus, Pseudomonas, Pseuoxanthomonas, and Ralstonia simultaneously had the ability to participate the process of toluene biodegradation and denitrification. BTF used nitrate or oxygen as electron acceptor, toluene as electron donor, and thereby redox between toluene and nitrate was formed, to realize toluene oxidation. BTF was capable of toluene oxidation by denitrification. These results show that the aerobic denitrifying BTF is achievable and open new possibilities for applying the BTF to the removal of volatile organic compounds.