The thermophilic (55 °C) microaerobic pretreatment of corn straw for anaerobic digestion

被引：86
|
作者：
Fu, Shan-Fei [1 ,2 ]
Wang, Fei [1 ,2 ]
Yuan, Xian-Zheng [1 ]
Yang, Zhi-Man [1 ]
Luo, Sheng-Jun [1 ]
Wang, Chuan-Shui [1 ]
Guo, Rong-Bo [1 ]
机构：
[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Shandong, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 175卷
基金：
中国国家自然科学基金;
关键词：
Anaerobic digestion; Thermophilic microaerobic pretreatment; Corn straw; Structural characterization analysis; SLUDGE PRETREATMENT; BIOGAS PRODUCTION; MICRO-AERATION; WASTE; ENHANCEMENT; HYDROLYSIS; IMPROVE;
D O I：
10.1016/j.biortech.2014.10.072
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Microaerobic process has been proven to be an alternative pretreatment for the anaerobic digestion (AD) process in several studies. In this study, the effect of thermophilic microaerobic pretreatment (TMP) on the AD of corn straw was investigated. Results indicated that TMP process obviously improved the methane yield. The maximum methane yield was obtained at the oxygen loads of 5 ml/g VSsubstrate, which was 16.24% higher than that of untreated group. The modified first order equation analysis showed the TMP process not only accelerated the hydrolysis rates but also reduced the lag-phase time of AD process. The structural characterization analysis showed cellulosic structures of corn straw were partly disrupted during TMP process. The crystallinity indexes were also decreased. In addition, large or destroyed pores and substantial structural disruption were observed after pretreatment. The results showed that TMP is an efficient pretreatment method for the AD of corn straw. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：203 / 208
页数：6
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