Performance and bacterial diversity of biotrickling filters filled with conductive packing material for the treatment of toluene. (June 2018)

• Record Type: Journal Article
• Authors: Wu, Hao; Guo, Chunyu; Yin, Zhenhao; Quan, Yue; Yin, Chengri
• Is Part Of: Bioresource technology. Volume 257(2018)
• Page Start: 201
• Page End: 209
• Publication Date: 2018-06
• Subjects: Applied voltage -- Bacterial diversity -- Biotrickling filter -- Conductive packing material -- Toluene; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2018.02.108
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Conductive packing material was first used to biological treatment of waste gas. A high EC of 120.1 g/m 3 h for toluene can be achieved in BTF-O. Bioelectrogenesis existed in the biodegradation process of toluene. Applied voltage can affect toluene degradation by changing bacterial community. Abstract: Toluene has high toxicity and mutagenicity, thus, the removal of toluene from air is necessary. In this study, two biotrickling filters (BTFs) were constructed and packed with conductive packing material to treat toluene waste gas. BTF-O exhibited good toluene removal performance even under high toluene inlet concentration, and over 80% of removal efficiency was observed. The elimination capacity reached 120.1 g/m 3 h corresponding to an inlet concentration of 2.259 g/m 3 under 61.5 s of empty bed retention time. During toluene biodegradation, the output voltage was observed in BTF-O and BTF-E, moreover BTF-E also showed slight power storage capacity. The applied voltage inhibited toluene removal and affected the bacterial community. The predominant bacterial genera in BTF-O were Acidovorax, Rhodococcus, Hydrogenophaga, Brevundimonas, Arthrobacter, Pseudoxanthomonas, Devosia, Gemmobacter, Rhizobium, Dokdonella and Pseudomonas . Genera Xanthobacter and Pelomonas accounted for the main bacterial community in BTF-E.