Bio-hydrolysis and bio-hydrogen production from food waste by thermophilic and hyperthermophilic anaerobic process

被引：57
作者：
Algapani, Dalal E. [1 ,2 ]
Qiao, Wei [1 ,3 ]
Su, Min [1 ]
di Pumpo, Francesca [4 ]
Wandera, Simon M. [1 ]
Adani, Fabrizio [4 ]
Dong, Renjie [1 ,3 ]
机构：
[1] China Agr Univ, Coll Engn, Biomass Engn Ctr, Beijing 100083, Peoples R China
[2] Al Neelain Univ, Coll Agr Technol & Fish Sci, Khartoum, Sudan
[3] Natl Dev & Reform Comm BGFeuls, Energy Author, State R&D Ctr Efficient Prod & Comprehens Utiliza, Beijing 100083, Peoples R China
[4] Univ Milan, DiSAA, Grp Ricicla, Via Celoria 2, I-20133 Milan, Italy
来源：
BIORESOURCE TECHNOLOGY | 2016年 / 216卷
基金：
中国国家自然科学基金;
关键词：
Food waste; Bio-hydrolysis; Bio-hydrogen; Thermophilic; Hyperthermophilic; 2-STAGE FERMENTATION PROCESS; HYDRAULIC RETENTION TIME; METHANE PRODUCTION; CO-DIGESTION; ACTIVATED-SLUDGE; KITCHEN GARBAGE; TEMPERATURE; PRETREATMENT; RECOVERY; CSTR;
D O I：
10.1016/j.biortech.2016.06.016
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
High-temperature pretreatment plays a key role in the anaerobic digestion of food waste (FW). However, the suitable temperature is not yet determined. In this work, a long-term experiment was conducted to compare hydrolysis, acidogenesis, acetogenesis, and hydrogen production at 55 degrees C and 70 degrees C, using real FW in CSTR reactors. The results obtained indicated that acidification was the rate-limiting step at both temperatures with similar process kinetics characterizations. However, the thermophilic pretreatment was more advantageous than the hyperthermophilic with suspended solids solubilization of 47.7% and 29.5% and total VFA vs. soluble COD ratio of 15.2% and 4.9%, for thermophilic and hyperthermophilic treatment, respectively, with a hydrolytic reaction time (HRT) of 10 days and an OLR of 14 kg COD/m(3) d. Moreover, stable hydrogen yield (70.7 ml-H-2/g VSin) and content in off gas (58.6%) was achieved at HRT 5 days, pH 5.5, and temperature of 55 degrees C, as opposed to 70 degrees C. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：768 / 777
页数：10
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