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：Xu, J.[4]

机构：[1] College of Environmental and Resource Sciences, Zhejiang University, Zhejiang Province, Hangzhou, 310058, China; [2] Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, 18 Shilongshan Road, Hangzhou, 310024, China; [3] Institute of Advanced Technology, Westlake Institute for Advanced Study, 18 Shilongshan Road, Zhejiang Province, Hangzhou, 310024, China; [4] State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, 73 Daqiao Road, Zhejiang Province, Hangzhou, 311400, China

年份：2022

卷号：25

期号：2

起止页码：771-778

外文期刊名：Green Chemistry

收录：EI(收录号：20230313403629);Scopus(收录号：2-s2.0-85146312251)

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. ? 2023 The Royal Society of Chemistry.