Wang, ShuoLi, JianzhengZheng, GuochenDu, GuochengLi, Ji2018-09-272018-09-272018-08-01Shuo Wang, Jianzheng Li, Guochen Zheng, Guocheng Du, and Ji Li, “Bioaugmentation with Mixed Hydrogen-Producing Acetogen Cultures Enhances Methane Production in Molasses Wastewater Treatment,” Archaea, vol. 2018, Article ID 4634898, 10 pages, 2018. doi:10.1155/2018/4634898http://dx.doi.org/10.1155/2018/4634898http://hdl.handle.net/1880/108075Hydrogen-producing acetogens (HPA) have a transitional role in anaerobic wastewater treatment. Thus, bioaugmentation with HPA cultures can enhance the chemical oxygen demand (COD) removal efficiency and CH4 yield of anaerobic wastewater treatment. Cultures with high degradation capacities for propionic acid and butyric acid were obtained through continuous subculture in enrichment medium and were designated as Z08 and Z12. Bioaugmentation with Z08 and Z12 increased CH4 production by glucose removal to 1.58. Bioaugmentation with Z08 and Z12 increased the COD removal rate in molasses wastewater from 71.60% to 85.84%. The specific H2 and CH4 yields from COD removal increased by factors of 1.54 and 1.63, respectively. Results show that bioaugmentation with HPA-dominated cultures can improve CH4 production from COD removal. Furthermore, hydrogen-producing acetogenesis was identified as the rate-limiting step in anaerobic wastewater treatment.Journal Article2018-09-27enCopyright © 2018 Shuo Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.http://dx.doi.org/10.11575/PRISM/33011