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Effect of thermal pretreatment on the physical and chemical properties of municipal biomass waste |
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| Authors: | Liu Xiao Wang Wei Gao Xingbao Zhou Yingjun Shen Renjie |
| Institution: | a School of Environment, Tsinghua University, Beijing 100084, China b Chinese Research Academy of Environmental Sciences, Beijing 100012, China c Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nisikyo-ku, Kyoto 615-8540, Japan d Civil & Environment Engineering School, Beijing University of Science & Technology, Beijing 100083, China |
| Abstract: | The effects of thermal pretreatment on the physical and chemical properties of three typical municipal biomass wastes (MBWs), kitchen waste (KW), vegetable/fruit residue (VFR), and waste activated sludge (WAS) were investigated. The results show that thermal pretreatment at 175 °C/60 min significantly decreases viscosity, improves the MBW dewatering performance, as well as increases soluble chemical oxygen demand, soluble sugar, soluble protein, and especially organic compounds with molecular weights >10 kDa. For KW, VFR and WAS, 59.7%, 58.5% and 25.2% of the organic compounds can be separated in the liquid phase after thermal treatment. WAS achieves a 34.8% methane potential increase and a doubled methane production rate after thermal pretreatment. In contrast, KW and VFR show 7.9% and 11.7% methane decrease because of melanoidin production. |
| Keywords: | Thermal pretreatment Municipal biomass waste Dewatering performance Soluble organic compounds Anaerobic biodegradability |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |