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Molecules

Title:		Biochar Production and Demineralization Characteristics of Food Waste for Fuel Conversion
Author(s):		Ahn KH; Shin DC; Lee YE; Jeong Y; Jung J; Kim IT;
Address:		"Department of Environmental Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-daero, Ilsanseo-gu, Goyang-si 10223, Republic of Korea. Department of Smart Construction and Environmental Engineering, Daejin University, 1007 Hoguk-ro, Pocheon-si 11159, Republic of Korea"
Journal Title:		Molecules
Year:		2023
Volume:		20230817
Issue:		16
Page Number:		-
DOI:		10.3390/molecules28166114
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"The pyrolysis of food waste has high economic potential and produces several value-added products, such as gas, bio-oil, and biochar. In South Korea, biochar production from food waste is prohibited, because dioxins are generated during combustion caused by the chloride ions arising from the high salt content. This study is the first to examine the water quality and the applicability of food waste-based biochar as solid refuse fuel (SRF) based on a demineralization process. The calorific value increased after demineralization due to the removal of ionic substances and the high carbon content. The chloride ion removal rate after demineralization increased with the increasing pyrolysis temperature. A proximate analysis of biochar indicated that the volatile matter decreased, while ash and fixed carbon increased, with increasing pyrolysis temperature. At 300 degrees C pyrolysis temperature, all domestic bio-SRF standards were met. The organic matter concentration in water decreased with increasing carbonization temperature, and the concentrations of soluble harmful substances, such as volatile organic compounds (VOCs), were within the standards or non-detectable. These results suggest that biochar can be efficiently generated from food waste while meeting the emission standards for chloride ions, dissolved VOCs, ash, and carbon"
Keywords:		*Food Chlorides *Refuse Disposal Carbon Halogens biochar food waste pyrolysis saltwater quality;
Notes:		"MedlineAhn, Kwang-Ho Shin, Dong-Chul Lee, Ye-Eun Jeong, Yoonah Jung, Jinhong Kim, I-Tae eng 20230094-001/Korea Institute of Civil Engineering and Building Technology/ Switzerland 2023/08/26 Molecules. 2023 Aug 17; 28(16):6114. doi: 10.3390/molecules28166114"