文献类型：期刊文献

英文题名：Investigation of methanogenic potential of typical and mixed components of food waste based on single-staged and two-staged hydrothermal pretreatment

作者：Yang, Mingming[1];Hungwe, Douglas[2];Cai, Zhengqing[3];Chen, Xueli[1];Ding, Lu[1];Yu, Guangsuo[1];Wang, Fuchen[1]

机构：[1]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[2]Hosei Univ, Res & Dev Ctr, Tama Campus,4342 Aihara, Tokyo 1940298, Japan;[3]East China Univ Sci & Technol, Coll Resources & Environm Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：139

起止页码：1043

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20245117558613);WOS:【SCI-EXPANDED(收录号:WOS:001516325300004)】；

基金：This work was supported by the project of the National Key Research and Development Program of China (2022YFC3902404) and the National Natural Science Foundation of China (22278142) .

语种：英文

外文关键词：Food waste; Hydrothermal pretreatment; Anaerobic digestion; Two-staged hydrothermal method; Melanoidin

摘要：During anaerobic digestion (AD), methanogens use hydrogen, carbon dioxide and acetic acid as energy carriers and carbon sources to grow and generate methane. Based on the optimum hydrothermal temperature of three typical components of food waste (FW), two-staged hydrothermal method is proposed to strengthen the process of methane production. The results show that single-staged hydrothermal pretreatment could significantly promote the methanogenic potential. However, when the hydrothermal temperature is further increased, the methane production of the mixed component decreases rapidly (from 186.18 mLCH4.g-1VS at 160 degrees C to 93.20 mLCH4.g-1VS at 200 degrees C). To eliminate the effect of temperature, two-staged hydrothermal pretreatment is adopted. This method is more efficient in terms of methane production. Three-dimensional excitation-emission matrix fluorescence region integration (3DEEM-FRI) analysis indicate that 140 degrees C was the critical temperature for the mass production of melanoidin. The fluorescence spectra reveal that the formation of melanoidin is accompanied by the consumption of protein substrates, in which content has been reduced by two-staged hydrothermal method. In summary, two-staged hydrothermal method can effectively improve the methane production of FW.