Nymphoides peltatum as a novel feedstock for biomethane production via anaerobic co-digestion with waste sludge

被引：7
作者：
Xiao, Hong [1 ]
Fang, Dexin [1 ]
Wang, Yingjun [1 ]
Xiao, Yinlong [1 ]
Luo, Lin [1 ]
Cheng, Zhang [1 ]
Zhang, Xiaohong [1 ]
Peng, Hong [1 ]
机构：
[1] Sichuan Agr Univ, Coll Environm Sci, Chengdu Campus, Chengdu 611130, Sichuan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 35期
关键词：
Nymphoides peltatum; Wasted sludge; Co-digestion; Methane production; Microbial community; VOLATILE FATTY-ACIDS; BIOGAS PRODUCTION; FOOD WASTE; SEWAGE-SLUDGE; WATER HYACINTH; BIOHYDROGEN PRODUCTION; AMMONIA INHIBITION; DARK FERMENTATION; ACTIVATED-SLUDGE; KITCHEN WASTE;
D O I：
10.1016/j.ijhydene.2021.03.016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nymphoides peltatum (NP) is exploited as a novel feedstock for biomethane production via anaerobic co-digestion with waste sludge (WS). Batch experiments are conducted under mesophilic condition at NP/WS of 1/3, 2/2, 3/1, 0/4 and 4/0 based on volatile solids (VS). Prior to anaerobic digestion (AD), NP undergoes only natural drying and grinding. The maximum net cumulative methane yield (265.16 mL CH4$g VSadded 1 ) and the highest gross VS removal rate (56.12%) are obtained at NP/WS of 1/3. The kinetic analysis by the modified Gompertz model fit hinted that 28 days is adequate for methane recovery and co-digestion significantly accelerates the digestion rate. Synergetic effect is corroborated to exist in codigestion due to amiable conditions in term of total ammonia nitrogen, free ammonia, pH, volatile fatty acids and total alkalinity. High-throughput 16S rRNA pyrosequencing reveals that Bacteroidetes, Firmicutes, Methanosarcina and Methanosaeta are conducive to AD of NP. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：18401 / 18411
页数：11
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