化工进展2024，Vol.43Issue(12)：7033-7041,9.DOI:10.16085/j.issn.1000-6613.2023-1986
厨余沼渣水热腐殖化过程影响因素及物质流分析
Impact factors and mass flow analysis of hydrothermal humification of food waste digestate
摘要
Abstract
The digestate from anaerobic fermentation of food waste has high organic matter content and high potential for fertilization.Compared with traditional composting,using hydrothermal technology to convert organic waste into humic acids has many advantages such as high substrate adaptability and short reaction time,which is conducive to promote the use of digestate as fertilizer in the anaerobic fermentation project of food waste.The present study provided options for the resource utilization of food waste anaerobic digestate as well as a source of feedstock and better process conditions for the production of humic acid-like substances.In this study,the effects of hydrothermal reaction pH and temperature on the yield and characteristics of humic acid and fulvic acid were investigated using anaerobic digestate as feedstock.The highest humic acid yield of 43.31%was achieved at a neutral reaction pH and temperature of 200℃.The humic acid-like products generated were found to have typical humic acid structure by FTIR and 3D-EEM analysis.And the fulvic acid yield was also more than 8%at 180-200℃.Carbon and nitrogen flow analysis showed that the carbon efficiency increased to more than 40%when the reaction temperature reached 200℃,and hydrothermal humification could recover more than 25%of nitrogen through humic acid.关键词
厨余沼渣/水热腐殖化/腐殖酸/富里酸/碳氮流Key words
food waste digestate/hydrothermal humification/humic acid/fulvic acid/carbon-nitrogen flow分类
资源环境引用本文复制引用
汤晶亮,邢涛,甄峰,周正伟..厨余沼渣水热腐殖化过程影响因素及物质流分析[J].化工进展,2024,43(12):7033-7041,9.基金项目
黑龙江省重点研发计划(GY2021ZB0253,GA21D009). （GY2021ZB0253,GA21D009）
