Improving two-stage thermophilic-mesophilic anaerobic co-digestion of swine manure and rice straw by digestate recirculation
文献类型：期刊论文
| 作者 | Chen, Hong; Zhang, Wenzhe; Wu, Jun; Chen, Xiangyu; Liu, Rongzhan; Han, Yunping; Xiao, Benyi ; Yu, Zhi; Peng, Yinglin
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| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2021-07 |
| 卷号 | 274页码:- |
| 关键词 | Digestate recirculation Microbial community Rice straw Swine manure Thermophilic-mesophilic anaerobic co-digestion |
| ISSN号 | 0045-6535 |
| 英文摘要 | The anaerobic co-digestion (coAD) of swine manure (SM) and rice straw (RS) is appealing for renewable energy recovery and waste treatment worldwidely. Improving its performance is very important for its application. In this study, long-term semi-continuous experiments were conducted to evaluate the improving effects of digestate recirculation on the performance, energy recovery, and microbial community of two-stage thermophilic-mesophilic coAD of swine manure (SM) and rice straw (RS). The experimental results indicated that the coAD systems of SM and RS (mixing ratio of 3:1) with or without digestate recirculation could not realize phase separation. The reactors of both coAD systems were characterized by pH values ranging from 7.74 to 7.85, methane production as 0.41 +/- 0.02 and 0.44 +/- 0.03 L/L/d, and stable operation. Notably, digestate recirculation increased total methane production, organic matter removal, and reaction rate of the coAD system by 9.92 +/- 5.08, 5.22 +/- 1.94, and 9.73-12.60%, respectively. Digestate recirculation improved the performance of the coAD by significantly increasing the abundance of Methanosarcina (from 4.1% to 7.5%-10.7% and 35.7%) and decreasing that of Methanothermobacter (from 94.2% to 87.3%-83.6% and 56.8%). Thus, the main methanogenesis pathway of the coAD system was changed by digestate recirculation and the methane production was effectively improved. Although the energy input of the coAD system increased by 30.26%, digestate recirculation improved the energy balance of the total system by 6.83%. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46047]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Hunan Anim & Vet Sci Inst, Changsha 410131, Peoples R China 3.Qingdao Univ, Coll Text & Clothing, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Changsha Univ Sci & Technol, Sch Hydraul Engn, Key Lab Dongting Lake Aquat Ecoenvironm Control &, Changsha 410004, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Hong,Zhang, Wenzhe,Wu, Jun,et al. Improving two-stage thermophilic-mesophilic anaerobic co-digestion of swine manure and rice straw by digestate recirculation[J]. CHEMOSPHERE,2021,274:-. |
| APA | Chen, Hong.,Zhang, Wenzhe.,Wu, Jun.,Chen, Xiangyu.,Liu, Rongzhan.,...&Peng, Yinglin.(2021).Improving two-stage thermophilic-mesophilic anaerobic co-digestion of swine manure and rice straw by digestate recirculation.CHEMOSPHERE,274,-. |
| MLA | Chen, Hong,et al."Improving two-stage thermophilic-mesophilic anaerobic co-digestion of swine manure and rice straw by digestate recirculation".CHEMOSPHERE 274(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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