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Performance and energy recovery of single and two stage biogas production from paper sludge: Clostridium thermocellum augmentation and microbial community analysis

文献类型: 外文期刊

作者: An, Qian 1 ; Cheng, Jing-Rong 3 ; Wang, Yu-Tao 4 ; Zhu, Ming-Jun 1 ;

作者机构: 1.South China Univ Technol, Guangzhou Higher Educ Mega Ctr, Sch Biol & Biol Engn, Guangzhou 510006, Peoples R China

2.South China Univ Technol, Guangzhou Higher Educ Mega Ctr, Guangdong Prov Engn & Technol Res Ctr Biopharmace, Guangzhou 510006, Peoples R China

3.Guangdong Acad Agr Sci, Key Lab Funct Foods, Guangdong Key Lab Agr Prod Proc, Minist Agr,Sericultural & Agri Food Res Inst, Guangzhou 510610, Peoples R China

4.Kashi Univ, Coll Life & Geog Sci, Kashi 844000, Peoples R China

5.Kashi Univ, Dept Educ Xinjiang Uygur Autonomous Reg, Key Lab Ecol & Biol Resources Yarkand Oasis Coll, Kashi 844000, Peoples R China

关键词: Paper sludge; Hydrogen; Methane; Microbial community; Thermophilic fermentation

期刊名称:RENEWABLE ENERGY ( 影响因子:8.001; 五年影响因子:7.435 )

ISSN: 0960-1481

年卷期: 2020 年 148 卷

页码:

收录情况: SCI

摘要: A two-stage thermophilic hydrogen fermentation and mesophilic methane production from paper sludge was successfully explored. The maximum hydrogen and methane potential were 0.165 Lig VS and 0.376 Lig CODeffluent, respectively with Clostridium thermocellum augmentation. 63 L of hydrogen and 122 L of methane were recovered from 1 kg Paper sludge (PS, dry weight) with an energy yield of 4.5 MJ/kg PS, 50% higher compared to the single-stage anaerobic digestion (94 L CH4, 3.0 MJ/kg PS). The bacterial community of second-stage process was dominated by genus Propionispira, Mesotoga and Amino-becterium with stability, whereas the bacterial structure in single-stage process presented dynamic changes where genus Acetivibrio and Fibrobacter played an indispensable role. However, Genus Methanosaeta, Methanosarcina, Methanobacterium and Methanospirillum existed stably and predominantly in the archaeal community of single-stage and second-stage processes. The present study suggests the potential application of the established two-stage process in valorization of low-value waste biomass. (C) 2019 Elsevier Ltd. All rights reserved.

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