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Hydrothermal processing as pretreatment for efficient production of ethanol and biogas from municipal solid waste
Bioresource Technology ( IF 9.7 ) Pub Date : 2018-04-06
Peyman Mahmoodi, Keikhosro Karimi, Mohammad J. Taherzadeh

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 10774 KJ energy/Kg of dry OFMSW was generated at the best conditions.



中文翻译:

水热处理作为预处理,可从城市固体废物中高效生产乙醇和沼气

城市固体废物(OFMSW)的有机部分主要由碳水化合物组成,包括淀粉基和木质纤维素材料。OFMSW在100–160°C的温度下进行了0–60分钟的水热处理,然后评估酶促乙醇的生产,然后从酒糟中生产沼气。在预处理和酶水解后,可获得最高的葡萄糖产量520 g / Kg干OFMSW,与未处理的OFMSW相比,增加了131%。通过抑制性耐性真菌Mucor indicus的乙醇发酵,得到191.10 g乙醇/ Kg干OFMSW,与未处理乙醇相比,乙醇收率提高了140.9%。从釜馏物产生的甲烷(废渣)产生了156 L / Kg OFMSW。换句话说,在最佳条件下,总共产生10774 KJ能量/千克干OFMSW。

更新日期:2018-04-06
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