文献类型：期刊文献

英文题名：Valorization of heavy metal enriched phytoremediation biomass using a deep eutectic solvent (DES)

作者：Zhang, Chenyuan[1,2,3] Yang, Xianpeng[3] Yang, Shuang[1,2,3] Liu, Zhongqi[1,2,3] Zhang, Lei[2,3] He, Hailong[3] Qiu, Wenmin[4] Zhuo, Renying[4] Xu, Jing[4] Wang, Lei[2,3]

第一作者：Zhang, Chenyuan

通信作者：Wang, L[1];Wang, L[2];Xu, J[3]

机构：[1]Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Zhejiang, Peoples R China;[2]Westlake Univ, Sch Engn, Key Lab Coastal Environm & Resources Zhejiang Prov, 18 Shilongshan Rd, Hangzhou 310024, Peoples R China;[3]Westlake Inst Adv Study, Inst Adv Technol, 18 Shilongshan Rd, Hangzhou 310024, Zhejiang, Peoples R China;[4]Chinese Acad Forestry, Res Inst Subtrop Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding Zhejiang Prov, 73 Daqiao Rd, Hangzhou 311400, Zhejiang, Peoples R China

年份：0

外文期刊名：GREEN CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000912110100001)】；

基金：This project was supported by the foundation of Westlake University (grant no. 103256021901) and the Research Centre for Industries of the Future (RCIF). The authors would like to acknowledge the Instrumentation and Service Center for Molecular Sciences (ISCMS) and Physical Sciences (ISCPS) at Westlake University for the equipment and technical support. The authors are grateful to Dr Yinjuan Chen, Dr Xiaohuo Shi, DrYing Nie, Xin Li, Ke Wang, Danyu Gu, Zhen Yang and Wenjing Cao for their assistance in measurement. The authors also acknowledge the assistance of Mr Zhenfei Xu at Hangzhou Lvsheng Institute of Modern Agriculture and Environmental Ecology.

语种：英文

摘要：Phytoremediation is an in situ environmentally friendly and economically feasible remediation technology to treat heavy metal contaminated soil. However, the obtained heavy metal enriched biomass is treated as hazardous waste and disposed of traditionally via incineration, posing risks of secondary pollution. In this work, we developed a novel DES-based pretreatment and metal extraction process to enable the valorization of phytoremediation biomass such as genetically modified poplar as the potential feedstock for biomass refining. The results showed that the DES (choline chloride/lactic acid) could remove around 98.3% Cd accumulated in poplar as well as a notable amount of lignin, resulting in a cellulose-rich pulp with trace heavy metals and Cu-containing lignin nanoparticles with a high phenolic hydroxyl content. Moreover, the electrochemical properties of this DES were analyzed. The excellent electrochemical stability and high conductivity of this DES enable its cleaning up via electrochemical deposition and recycling. Furthermore, this DES-based treatment technology has been demonstrated successfully for the hyperaccumulator Sedum alfredii, providing evidence for its wide applicability and potential for scaling-up.