采用微生物预处理法提高城市固体废物中木质纤维素的厌氧消化。
Enhancing the anaerobic digestion of lignocellulose of municipal solid waste using a microbial pretreatment method.
机构信息
College of Agronomy and Biotechnology, Center of Biomass Engineering, China Agricultural University, Beijing 100193, China.
College of Agronomy and Biotechnology, Center of Biomass Engineering, China Agricultural University, Beijing 100193, China.
出版信息
Bioresour Technol. 2014 Feb;154:1-9. doi: 10.1016/j.biortech.2013.11.090. Epub 2013 Dec 12.
The use of biological pretreatment in anaerobic digestion systems has some potential; however, to date, these methods have not been able to effectively increase methane production of lignocellulose of municipal solid waste (LMSW). In this study a thermophilic microbial consortium (MC1) was used as a pretreatment method in order to enhance biogas and methane production yields. The results indicated that sCOD concentration increased significantly in the early stages of pretreatment. Ethanol, acetic acid, propionic acid, and butyric acid were the predominant volatile organic products in the MC1 hydrolysate. Biogas and methane production yields of LMSW significantly increased following MC1 pretreatment. In addition, the methane production rate of the treated LMSW was greater than that observed from the untreated sample.
生物预处理在厌氧消化系统中的应用具有一定的潜力；然而，迄今为止，这些方法尚未能够有效地提高城市固体废物木质纤维素（LMSW）的甲烷产量。在本研究中，采用高温微生物共混物（MC1）作为预处理方法，以提高沼气和甲烷的产率。结果表明，预处理的早期 sCOD 浓度显著增加。MC1 水解物中的主要挥发性有机产物为乙醇、乙酸、丙酸和丁酸。LMSW 经 MC1 预处理后，沼气和甲烷的产率显著提高。此外，处理后的 LMSW 的甲烷生成速率大于未处理样品的甲烷生成速率。
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