水热预处理工艺提高城市固体废弃物生产乙醇和沼气的效率。
Hydrothermal processing as pretreatment for efficient production of ethanol and biogas from municipal solid waste.
机构信息
Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran; Industrial Biotechnology Group, Research Institute of Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
出版信息
Bioresour Technol. 2018 Aug;261:166-175. doi: 10.1016/j.biortech.2018.03.115. Epub 2018 Apr 6.
Organic fraction of municipal solid waste (OFMSW) is dominated by carbohydrates, including starch-based and lignocellulosic materials. The OFMSW was hydrothermally pretreated at 100-160 °C for 0-60 min, and then assessed for enzymatic ethanol production, followed by biogas production from the stillage. The highest glucose yield of 520 g/Kg of dry OFMSW, corresponding to 131% increase compared to that of the untreated OFMSW, was obtained after the pretreatment and enzymatic hydrolysis. Through ethanolic fermentation by an inhibitory tolerant fungus, Mucor indicus, 191.10 g ethanol/Kg of dry OFMSW was obtained, which was a 140.9% improvement in the ethanol yield compared to that from the untreated one. Methane production from the stillage (waste residues) resulted in 156 L/Kg OFMSW. In other words, a total of 10,774 KJ energy/Kg of dry OFMSW was generated at the best conditions.
城市固体废物的有机部分（OFMSW）主要由碳水化合物组成，包括基于淀粉和木质纤维素的材料。OFMSW 在 100-160°C 下进行水热预处理 0-60 分钟，然后评估其用于酶法乙醇生产的能力，再从酒糟中生产沼气。预处理和酶解后，干 OFMSW 的葡萄糖得率最高可达 520 g/Kg，与未经处理的 OFMSW 相比增加了 131%。通过具有抑制耐受性的真菌——印度毛霉进行乙醇发酵，可获得 191.10 g 乙醇/Kg 干 OFMSW，与未经处理的相比，乙醇产率提高了 140.9%。从酒糟（废渣）中产生的甲烷量为 156 L/Kg OFMSW。换句话说，在最佳条件下，总共从每干克 OFMSW 中产生 10774 千焦能量。
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