Effects of pungency degree on mesophilic anaerobic digestion of kitchen waste

被引：21
|
作者：
Li, Yangyang [1 ,2 ]
Jin, Yiying [1 ,2 ]
Li, Jinhui [1 ,2 ]
Li, Hailong [3 ]
Yu, Zhixin [4 ]
机构：
[1] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Minist Educ China, Key Lab Solid Waste Management & Environm Safety, Beijing 100084, Peoples R China
[3] Malardalen Univ, Sch Sustainable Dev Soc & Technol, SE-72123 Vasteras, Sweden
[4] Univ Stavanger, Dept Petr Engn, N-4036 Stavanger, Norway
来源：
APPLIED ENERGY | 2016年 / 181卷
关键词：
Kitchen waste; Anaerobic digestion; Pungency degree; Degradation kinetics; FOOD WASTE; RETENTION TIME; CO-DIGESTION; RED-PEPPER; CAPSAICIN; PRETREATMENT; AMMONIA; HYDROLYSIS; ENERGY; TEMPERATURE;
D O I：
10.1016/j.apenergy.2016.08.057
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This study investigated the influence of pungency degrees (PDs) on mesophilic anaerobic digestion of kitchen waste (KW). Batch tests were performed to evaluate the methane potential and production rate and the effect of PDs on organics degradation efficiency (in terms of volatile solids, protein and ether extract) at mesophilic temperature. Koch and Drewes model and modified Gompertz model were applied to assess the effects of PDs on the hydrolysis rate constant, biomethane yield rate and lag time. The results revealed that with the increasing contributions of PDs, the methane yield, organics degradation efficiency and hydrolysis rate of KW decreased while the pH values and concentrations of total ammonia nitrogen and free ammonia nitrogen were increased. Additionally, PDs lower than PD3 presented better digestion performance, and according to results of organics degradation and kinetics study, it could be suggested that appropriate range of PD in KW beneficial for AD is PD5-PD4. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：171 / 178
页数：8
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