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苎麻水热液化生物油特性及重金属迁移的研究

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如何绿色、高效、资源化处置富含重金属植物收获物是植物修复重金属污染土壤产业化发展急需解决的技术难题。以苎麻为原料，水为反应溶剂，考察了反应温度、反应时间和酸碱催化剂对苎麻水热产油及重金属迁移的影响。结果表明，275℃、30 min 和 5%HCOOH 条件下，苎麻液化生物油产率最高为 20。86%，且其热值为30。68 MJ/kg。空白组生物油有机组分主要由醇、烃、酸、酮和含N化合物类组成，HCOOH组液化生物油中烃和酯类化合物含量增加，而Na2 CO3 组的生物油中烃、醇和酸类含量减少。此外，重金属(Cd、Pb、Cu和Cr)85%以上保留在固相残渣中，而As主要转移到水相中，且生物油中重金属含量低于4%。
Study on the bio-oil characteristic and heavy metal migration derived from hydrothermal liquefaction of ramie
How to dispose heavy metal-rich plant harvest in a green,efficient and resource-based manner is an urgent technical problem for the industrial development of phytoremediation of heavy metal-contami-nated soil.Using ramie as raw material and water as reaction solvent,the effects of reaction temperature,reaction time and acid-base catalysts on the oil yield and heavy metal migration of ramie were investiga-ted.The results showed that the highest yield of ramie liquefied bio-oil was 20.86%at 275℃,30 min and 5%HCOOH,and its calorific value was 30.68 MJ/kg.The organic components of bio-oil in blank group were mainly composed of alcohols,hydrocarbons,acids,ketones and N-containing compounds.The contents of hydrocarbon and ester compounds in liquefied bio-oil in HCOOH group were increased,while the contents of hydrocarbon,alcohols and acids in bio-oil in Na2 CO3 group were decreased.In addition,more than 85%of heavy metals(Cd,Pb,Cu and Cr)are retained in the solid phase residue,while As is mainly transferred to the aqueous phase,and the heavy metal content in bio-oil is less than 4%.

hydrothermal liquefactionramiebio-oilheavy metalaqueous phase

蒋海伟、艾仙斌、阙志刚、韩佩、邹俊华、邓同辉、付尹宣、石金明

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江西省科学院 能源研究所,江西 南昌 330096

水热液化 苎麻 生物油 重金属 水相

国家自然科学基金国家自然科学基金国家自然科学基金江西省自然科学基金江西省科学院包干制试点示范项目重点研发计划江西省科学院包干制试点示范项目重点研发计划江西省科学院包干制试点示范项目重点研发计划江西省科学院包干制试点示范项目重点研发计划江西省科学院包干制试点示范项目重点研发计划江西省科学院引进博士项目江西省重点研发计划南昌市重点实验室项目

22308136520041145176401920232BAB2140632022YSBG210112022YJC10032021YSBG100042021YSBG210152022YSBG500102023YYB0520201BBE510132021-NCZDSY-020

2024

应用化工
陕西省石油化工研究设计院　陕西省化工学会

应用化工

CSTPCD北大核心
影响因子：0.411
ISSN：1671-3206
年,卷(期)：2024.53(3)
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