Humic acid inhibition of anaerobic digestion: Impact of microbial community

摘要：

　　The impact of microbial community composition on humic acid (HA) inhibition was studied.The test conditions included a combination of two inocula with different model substrates (protein and carbohydrate) at HA concentrations of 0 to 2.0 g L-1 at 37 ± 1℃.The study showed that HA inhibited only hydrolysis and not methanogenesis.Only hydrolysis of carbohydrate was affected and not protein,likely due to selective inhibition of substrate and/or specific enzyme.The results suggested that the inhibition is likely caused by enzyme inhibition.The study also showed that the inhibition is reversible within the HA concentration range studied.However,the recovery rate varied with inoculum.The study showed that inoculum with higher bacterial activity and diverse bacterial community has better chance of avoiding HA inhibition.

关键词： Anaerobic digestion Microbial community Humic acid Inoculum Hydrolysis

作者: S.D.Yap S.Astals P.D.Jensen D.J.Batstone S.Tait

作者单位: Advanced Water Management Centre, The University of Queensland, St Lucia, QLD 4072, Australia

会议类型: 国际会议

会议名称: The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)

会议地点: 北京

会议语种:英文

页码: 253-256

在线出版日期: 2017-10-17（万方平台首次上网日期，不代表论文的发表时间）