Biogas desulfurization under anoxic conditions using synthetic wastewater and biogas slurry. (September 2018)

• Record Type: Journal Article
• Authors: Zeng, Yong; Xiao, Lifan; Zhang, Xueying; Zhou, Jun; Ji, Gaosheng; Schroeder, Sarah; Liu, Guoxiao; Yan, Zhiying
• Is Part Of: International biodeterioration & biodegradation. Volume 133(2018)
• Page Start: 247
• Page End: 255
• Publication Date: 2018-09
• Subjects: Hydrogen sulfide -- Biogas desulfurization -- Wastewater denitrification -- Aerated biogas slurry -- Microbial community; H2S hydrogen sulfide -- BTF biotrickling filter -- WWTP Wastewater Treatment Plants -- SDD simultaneous biogas desulfurization and wastewater denitrification system -- LR loading rate -- RE removal efficiency -- EC elimination capability -- HRT hydraulic retention time -- EBRT empty bed residence time; Biodegradation -- Periodicals; Bioremediation -- Periodicals; Biodegradation -- Periodicals; Biodégradation -- Périodiques; Biorestauration -- Périodiques; Electronic journals; 620.11223
• DOI: 10.1016/j.ibiod.2018.05.012
• Languages: English
• ISSNs: 0964-8305

Abstract

Abstract: A feasibility study was conducted to determine whether aerated biogas slurry is a suitable nutrient solution for biogas desulfurization systems with a biotrickling filter. At a loading rate of 36.20 g-H2 S m −3 h −1, the H2 S and NOx − -N removal efficiencies were 84.7% (average elimination capacity of 30.67 g-H2 S m −3 h −1 ) and 60.9%, respectively, when utilizing synthetic wastewater in a simultaneous biogas desulfurization and wastewater denitrification system. However, these efficiencies were just 61.9% (average elimination capacity of 22.42 g-H2 S m −3 h −1 ) and 49.2%, respectively, when biogas slurry was used. High-throughput sequencing revealed that the Thiobacillus and Sulfurimonas genera were the main functional bacteria. Alpha- and beta-diversity analyses showed that the H2 S loading rate significantly affected the microbial community structure, especially in the system utilizing aerated biogas slurry. Finally, based on the results, we describe a feasible approach to using biogas slurry for biogas desulfurization. Graphical abstract: Highlights: The use of biogas slurry for biogas anoxic desulfurization was feasible. At LR 30.67 g-H2 S m −3 h −1, average RE was 84.7% in stage I less 61.9% in stage II. The thiobacillus and sulfurimonas genera contents have great changes in two stages. Providing a feasible route for biogas desulfurization.