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Experimental study on anaerobic co-digestion of the individual component of biomass with sewage sludge: methane production and microbial community
Biomass Conversion and Biorefinery ( IF 4 ) Pub Date : 2020-10-09 , DOI: 10.1007/s13399-020-01049-6
Pengfei Li , Chongbo Cheng , Chao He , Ran Yu , Dekui Shen , Youzhou Jiao

The co-digestion of the individual component of biomass with sewage sludge was investigated, concerning the cumulative methane yield, variation of pH, chemical oxygen demand (COD), volatile fatty acids (VFAs), and total ammonia nitrogen (TAN) during 50-day digestion. The microbial community at the initial stage (stage I) and maximum methane production rate stage (stage II) of the digestion process were identified by Illumina MiSeq sequencing. The cumulative methane yield from co-digestion of cellulose and sludge was increased by 33.33% over the calculated value from that of mono-digestion of cellulose and sludge, while that from co-digestion of hemicellulose and sludge was achieved as 259.32% compared with the calculated value from that of mono-digestion of hemicellulose and sludge. The Firmicutes to Bacteroidetes (F/B) ratio at the stage II of co-digestion of hemicellulose and sludge was notably decreased from 46.53 to that of 1.39 for mono-digestion of hemicellulose. The percentage of Methanosarcina in acetoclastic methanogens at the stage II of mono-digestion of hemicellulose was largely increased from 1.06% to that of 97.03% for co-digestion of hemicellulose and sludge.



中文翻译:

生物质与污水污泥厌氧共消化的实验研究:甲烷产生与微生物群落

研究了生物质中各个组分与污水污泥的共消化过程,涉及在50-50分钟内的累积甲烷产量,pH值变化,化学需氧量(COD),挥发性脂肪酸(VFA)和总氨氮(TAN)。一天消化。通过Illumina MiSeq测序鉴定了消化过程的初始阶段(第一阶段)和最大甲烷产生速率阶段(第二阶段)的微生物群落。纤维素和污泥共消化的累积甲烷产率比纤维素和污泥单消化的计算值提高了33.33%,而半纤维素和污泥共消化的甲烷计算的产率为259.32%。从半纤维素和污泥的单消化的计算值。该厚壁菌门半纤维素和污泥共消化的阶段II中的拟杆菌(F / B)比从单消化半纤维素显着地从46.53降低到1.39。的百分比甲烷在半纤维素的单消化的阶段II乙酸分解产甲烷菌主要是从1.06%增加至97.03%半纤维素和污泥的共消化。

更新日期:2020-10-11
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