林产化学与工业2026，Vol.46Issue(1)：65-72,8.DOI:10.20195/j.issn.0253-2417.2024205
木醋液的高值化利用研究及环境效益分析
High-value Utilization of Wood Vinegar and Its Environmental Benefit Analysis
摘要
Abstract
To achieve efficient utilization of wood vinegar,this study proposed an organic solvent extraction process,in which the extract phase was used for phenol recovery,while the raffinate phase underwent anaerobic digestion for methane production,and untreated wood vinegar was recorded as AS.A life cycle assessment(LCA)was conducted to evaluate the environmental impact of this process in industrial application.The results showed that dichloromethane(DCM),diethyl ether(Et2 O),and ethyl acetate(EtOAc)extract effectively retained the volatile fatty acids(VFA)in wood vinegar,with dichloromethane performing the best,followed by ethyl acetate.The extract phase was enriched with phenolic compounds,primarily phenol,with ethyl acetate achieving the highest enrichment.Mesophilic anaerobic digestion experiments revealed that untreated wood vinegar had a methane production potential(chemical oxygen demand(COD)mass meter)of 41.92 L/kg.After extraction with dichloromethane and ethyl acetate,methane production potential increased to 65.83 L/kg and 66.21 L/kg of the extract residue phase AS-DCM and AS-EtOAc,respectively,whereas diethyl ether extraction(AS-Et2 O)reduced methane potential.LCA analysis indicated that adding an ethyl acetate extraction unit reduced environmental impacts in terms of ecological toxicity potential,eutrophication potential,and global warming potential.The data for these three metrics are only 67%,79% and 60% of the original process,respectively,achieving the lowest overall impact.In contrast,diethyl ether increased negative impacts of the process.In conclusion,dichloromethane and ethyl acetate are recommended extractants to enhance methane production.For ecological benefits,ethyl acetate is the optimal choice.关键词
木醋液/厌氧消化/甲烷潜力/生命周期评价Key words
wood vinegar/anaerobic digestion/methane potential/life cycle assessment分类
化学化工引用本文复制引用
胡杨,汪佳钰,崔家豪,牛雨薇,卢辛成,孙康,徐芙清..木醋液的高值化利用研究及环境效益分析[J].林产化学与工业,2026,46(1):65-72,8.基金项目
陕西省重点研发计划资助项目(2022ZDLNY02) （2022ZDLNY02）
