The migration and transformation behavior of heavy metals during co-liquefaction of municipal sewage sludge and lignocellulosic biomass

被引：74
|
作者：
Leng, Lijian [1 ,2 ]
Leng, Songqi [1 ,2 ]
Chen, Jie [1 ,2 ]
Yuan, Xingzhong [3 ]
Li, Jun [1 ,2 ]
Li, Kun [1 ,2 ]
Wang, Yunpu [4 ]
Zhou, Wenguang [1 ,2 ]
机构：
[1] Nanchang Univ, Minist Educ, Sch Resources Environm & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China
[2] Nanchang Univ, Minist Educ, Key Lab Poyang Lake Environm & Resource Utilizat, Nanchang 330031, Jiangxi, Peoples R China
[3] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[4] Nanchang Univ, Minist Educ, Engn Res Ctr Biomass Convers, Nanchang 330047, Jiangxi, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2018年 / 259卷
基金：
中国国家自然科学基金;
关键词：
Co-liquefaction; Sewage sludge; Lignocellulosic biomass; Heavy metal; Distribution behavior; SUPERCRITICAL WATER GASIFICATION; BIO-OIL PRODUCTION; RISK-ASSESSMENT; HYDROTHERMAL TREATMENT; SUBCRITICAL WATER; RICE HUSK; QUANTITATIVE-EVALUATION; SEQUENTIAL EXTRACTION; ENVIRONMENTAL RISK; MICROALGAL STRAINS;
D O I：
10.1016/j.biortech.2018.03.019
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Co-liquefaction of municipal sewage sludge (MSS) and heavy metal (HM) contaminated lignocellulosic biomass (rice straw or wood sawdust) was conducted at 300 degrees C with ethanol as the solvent to study the transformation behavior of HMs (e.g., Cu, Cd, Pb, Cr, Zn, and Ni). The results indicate that HMs in rice straw or wood sawdust transferred heavily to bio-oils (up to 10-25% of the total Cu, Cd, and Zn) when they were liquefied individually, compared with MSS with only similar to 5% distributed to bio-oil. The bio-available fraction of HMs in bio-chars and bio-oils produced from liquefaction of individual biomass were assessed to show medium to high risk to the environment. Co-liquefaction promoted the distribution of HMs to solid bio-char. Moreover, co-liquefaction benefited the immobilization of HMs in bio-chars and bio-oils. Synergistic effects were found for HMs immobilization during co-liquefaction.
引用
收藏
页码：156 / 163
页数：8
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