Instability diagnosis and syntrophic acetate oxidation during thermophilic digestion of vegetable waste
文献类型：期刊论文
| 作者 | Li, Dong1; Ran, Yi2; Chen, Lin3; Cao, Qin1; Li, Zhidong1; Liu, Xiaofeng1 |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 139期号:2018页码:263-271 |
| 关键词 | Vegetable waste Thermophilic digestion Process monitoring Instability diagnosis Syntrophic acetate oxidization |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2018.04.019 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Effective process monitoring and instability diagnosis are important for stable anaerobic digestion (AD) of vegetable waste (VW). In order to evaluate the performance of thermophilic digestion of VW, to make early diagnosis for instability after organic overload, and to reveal the dynamics of microbial community under different running states, thermophilic AD of VW was carried out under improved organic loading rates (OLR) of 0.5-2.5 g volatile solid (VS)/(L . d) in this study. Gaseous parameters including volumetric methane production rate (VMPR), CH4, CO2, and H-2 concentrations, and liquid parameters including pH, oxidation reduction potential, volatile fatty acid (VFA), and total alkalinity (TA), bicarbonate alkalinity (BA), intermediate alkalinity (IA), and ammonia, were monitored. The coupling parameters, such as the CH4/CO2, VFA/BA, and BA/TA ratios were also used to evaluate stability. The dynamics of syntrophic acetate-oxidizing bacteria (SAOB), acetoclastic methanogens (AM), and hydrogenotrophic methanogens (HM) were analyzed by high-throughput sequencing. The main methanogenic bacteria were HM (Methanothermobacter) during the start-up period of OLR 0.5 gVS/(L . d), while they were AM (Methanosarcina) during the stable period of OLR of 1.0 gVS/(L . d). The VMPR of stable period was about 0.29 L/(L . d) with total VFA concentration below 100 mg/L, CH4/CO2 > 1.3, and BA/TA>0.9. The first instability due to the accumulation of VFA and self-recovery due to syntrophic acetate oxidation occurred at an OLR of 1.5 g VS/(L . d). The syntrophic acetate-oxidizing bacteria probably belong to genus S1 (family Thermotogaceae). The digestion failed at an OLR of 2.0 g VS/(L . d). H-2 was only detected during collapsed period instead of instable period. The total ammonia nitrogen loss and bicarbonate alkalinity (BA) reduction were the primary causes for the instability of AD of VW without effluent recirculation. Compared with single parameters, the CH4/CO2 and BA/total alkalinity (TA) ratios are recommended as early warning indicators for engineering applications of thermophilic AD of VW. (C) 2018 Elsevier Ltd. All rights reserved. |
| 学科主题 | Environment ; Ecology |
| URL标识 | 查看原文 |
| WOS关键词 | ANAEROBIC CO-DIGESTION ; SP NOV. ; GEN. NOV. ; OXIDIZING BACTERIUM ; FRUIT ; PERFORMANCE ; MANURE ; RECIRCULATION ; FERMENTATION ; ARCHAEON |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000434747700026 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://210.75.237.14/handle/351003/30198]  |
| 专题 | 环境治理与食品安全领域_应用与环境微生物研究 环境治理与食品安全领域_环境微生物四川省重点实验室 环境治理与食品安全领域_中国科学院环境与应用微生物重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Chengdu Inst Biol, Environm Microbiol Key Lab Sichuan Prov, Key Lab Environm & Appl Microbiol, Chengdu 610041, Sichuan, Peoples R China; 2.Minist Agr, Biogas Inst, Chengdu 610041, Sichuan, Peoples R China; 3.Changzhou Univ, Inst Urban & Rural Mines, Changzhou 213164, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Dong,Ran, Yi,Chen, Lin,et al. Instability diagnosis and syntrophic acetate oxidation during thermophilic digestion of vegetable waste[J]. WATER RESEARCH,2019,139(2018):263-271. |
| APA | Li, Dong,Ran, Yi,Chen, Lin,Cao, Qin,Li, Zhidong,&Liu, Xiaofeng.(2019).Instability diagnosis and syntrophic acetate oxidation during thermophilic digestion of vegetable waste.WATER RESEARCH,139(2018),263-271. |
| MLA | Li, Dong,et al."Instability diagnosis and syntrophic acetate oxidation during thermophilic digestion of vegetable waste".WATER RESEARCH 139.2018(2019):263-271. |
入库方式： OAI收割
来源：成都生物研究所
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