文献类型：期刊文献

英文题名：Comparison on solid biofuel production from wet and dry carbonization processes of food wastes

作者：Theppitak, Sarut[1,2]; Hungwe, Douglas[2]; Ding, Lu[1,2,3]; Xin, Dai[2]; Yu, Guangsuo[1,3,4]; Yoshikawa, Kunio[5]

机构：[1] Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, China; [2] Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan; [3] Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China; [4] State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan, Ningxia, 750021, China; [5] ZHE JIANG ECO ENVIRONMENTAL TECHNOLOGY CO., LTD. Huzhou City, Zhejiang Province, Wuxing District 1188, the headquarters of the free port H Building 20F, China

年份：2020

卷号：272

外文期刊名：Applied Energy

收录：EI(收录号：20202308784761)

语种：英文

外文关键词：Calorific value - Thermochemistry - Gasification - Thermal processing (foods) - Biofuels - Animals

摘要：In this research, three categories of food waste (dried cabbage, chicken, and rice) were separately subjected to hydrothermal carbonization (HTC) under 180 °C, 200 °C, and 220 °C and pyrolytic carbonization (PC) under 200 °C, 250 °C, 300 °C, 350 °C, and 400 °C for solid biofuel production, respectively. Carbonization pathways, solid yield, high heating value (HHV), the transformation of nitrogen and ash, and char reactivity were detailly compared. After both pre-treatments, the ratio of fixed carbon (FC) to volatile matter (VM) of solid increased with the increase of the temperature, except for HTC of chicken. HTC of chicken led to more VM in solid product with very low solid yield and significantly lower N content. HTC-chars showed higher VM even at the same temperature as PC despite more severe carbonization (higher C content). Even though the N content can be reduced by both HTC and PC, HTC showed superiority than PC in regards to reducing the N content, indicating the potential to mitigate the N-related emission. Even though the HHV of HTC char was higher than that of PC char at the same pretreatment temperature, the product yield of the former one was much lower, resulting in lower energy yield in HTC char. The alkaline index (AI) can be used as the main factor for comparisons of gasification reactivity between (1) HTC and PC-chars and (2) Among HTC-chars from different temperatures. PC-chars presented higher reactivity than HTC-chars for all types of feedstock when considering at the same pre-treatment temperature at 200 °C. In conclusion, the key parameters including VM, the solid yield, HHV, the N content reduction, and char reactivity can be adopted to well evaluate the solid biofuel qualities production from different processes of HTC and PC, respectively. ? 2020 Elsevier Ltd