Evaluating inhibition conditions in high-solids anaerobic digestion of organic fraction of municipal solid waste

被引：73
|
作者：
Schievano, Andrea [1 ]
D'Imporzano, Giuliana [1 ]
Malagutti, Luca [2 ]
Fragali, Emilio [3 ]
Ruboni, Gabriella [3 ]
Adani, Fabrizio [1 ]
机构：
[1] Univ Milan, Dipartimento Prod Vegetale, Grp Ricicla, I-20133 Milan, Italy
[2] Univ Milan, Dipartimento Sci Anim, I-20133 Milan, Italy
[3] Linea Ambiente Srl, I-25038 Rovato, BS, Italy
来源：
BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 14期
关键词：
High-solids anaerobic digestion; Biogas; Organic fraction of municipal solid waste; Biodegradability; Organic loading;
D O I：
10.1016/j.biortech.2010.02.032
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
High-solids anaerobic digestion (HSAD) processes, when applied to different types of organic fractions of municipal solid waste (OFMSW), may easily be subjected to inhibition due to organic overloading. In this study, a new approach for predicting these phenomena was proposed based on the estimation of the putrescibility (oxygen consumption in 20 h biodegradation, OD20) of the organic mixtures undergoing the HSAD process. Different wastes exhibiting different putrescibility were subjected to lab-scale batch-HSAD. Measuring the organic loading (OL) as volatile solids (VS) was found unsuitable for predicting overload inhibition, because similar VS contents corresponded to both inhibited and successful trials. Instead, the OL calculated as OD20 was a very good indicator of the inhibiting conditions (inhibition started for OD20 > 17-18 g O-2 kg(-1)). This new method of predicting inhibition in the HSAD process of diverse OFMSW may be useful for developing a correct approach to the technology in very different contexts. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：5728 / 5732
页数：5
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