Early warning indicators and microbial community dynamics during unstable stages of continuous hydrogen production from food wastes by thermophilic dark fermentation

被引：19
|
作者：
Jia, Xuan [1 ]
Wang, Yong [1 ,2 ]
Ren, Lianhai [1 ]
Li, Mingxiao [2 ]
Tang, Renshi [1 ]
Jiang, Yonghai [2 ]
Hou, Jiaqi [2 ]
机构：
[1] Beijing Technol & Business Univ, Key Lab Cleaner Prod & Integrated Resource Utiliz, Beijing 100048, Peoples R China
[2] Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 57期
基金：
中国国家自然科学基金;
关键词：
Early warning indicators; Unstable stages; Microbial community dynamics; Thermophilic dark fermentation; Hydrogen production; Food wastes; ORGANIC LOADING RATE; TERM HYDROTHERMAL PRETREATMENT; ANAEROBIC CO-DIGESTION; STIRRED-TANK REACTOR; BIOHYDROGEN PRODUCTION; ACTIVATED-SLUDGE; ACID PRODUCTION; PROCESS FAILURE; PH; TEMPERATURE;
D O I：
10.1016/j.ijhydene.2019.08.082
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：
Early warning indicators (EWIs) and microbial community dynamics during thermophilic dark fermentation-based hydrogen production (TFHP) from food wastes were investigated during stable and fluctuating operations in continuous systems. Difference and redundancy analyses revealed the linkage between dominant genera, metabolites and process parameters and characterized the EWIs and mechanism of instability of the TFHP. Besides biogas production rate (GPR), hydrogen proportion and volatile fatty acids (VFAs) concentrations, the potential warning function of the microbial community were observed. Thermoanaerobacterium was the dominant genus which decreased during the unstable stages. Bacillus is another EWI in unstable stages when the value of pH is lower. Lactobacillus and Weissella appeared as OLR increased to 9 g VS L-1 d(-1) in the OLR-9 unstable stage. This study demonstrates the key EWIs for monitoring and controlling continuous hydrogen production and its stability. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：30000 / 30013
页数：14
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