School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China.
School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China.
Ecotoxicol Environ Saf. 2019 Nov 30;184:109618. doi: 10.1016/j.ecoenv.2019.109618. Epub 2019 Sep 3.
Photocatalytic membrane coupled to biodegradation offers potential for degrading volatile organic compounds (VOCs) in photocatalytic membrane biofilm reactor. An intimately coupled photocatalysis and biodegradation reactor was operated in continuous operation for 500 days to treat simulated waste gas containing toluene. Toluene removal efficiency obtained 99%, with the elimination capacity of 550 g m·h. Membrane photocatalysis coupled to biodegradation was created to improve toluene removal from 11 to 20%. The dominant genera were Lysinibacillus, Hydrogenophaga, Pseudomonas at 30 d, Rudaea, Dongia, Litorilinea at 230 d xyl, Tod, Tcb, Bed, Tmo, Tbu, Tou, Dmp, Cat were functional genes of toluene metabolism, as shown by16S rDNA and metagenomic sequencing. Photocatalysis destroyed part of the toluene into biodegradable intermediates that were immediately mineralized by microorganisms in biofilm, some toluene was directly degraded by toluene degrading bacterial community into carbon dioxide and water. The novel hybrid photocatalytic membrane biofilm reactor is a cost-effective and robust alternative to VOCs treatment.
光催化膜与生物降解相结合为降解挥发性有机化合物（VOCs）提供了潜力，在光催化膜生物膜反应器中。在连续运行 500 天的条件下，运行了一种紧密耦合的光催化和生物降解反应器，以处理含有甲苯的模拟废气。甲苯去除效率达到 99%，消除能力为 550 g·m·h。创建膜光催化与生物降解相结合是为了提高甲苯的去除率从 11%到 20%。优势属在 30d 时为Lysinibacillus、Hydrogenophaga、Pseudomonas，在 230d xyl 时为Rudaea、Dongia、Litorilinea，Tod、Tcb、Bed、Tmo、Tbu、Tou、Dmp、Cat 是甲苯代谢的功能基因，如 16S rDNA 和宏基因组测序所示。光催化将部分甲苯分解成可生物降解的中间产物，这些中间产物立即被生物膜中的微生物矿化，一些甲苯被甲苯降解细菌群落直接降解为二氧化碳和水。新型混合光催化膜生物膜反应器是处理 VOCs 的一种具有成本效益和稳健的替代方法。
