文献类型：期刊文献

英文题名：Highly efficient removal of U(VI) by a novel biochar supported with FeS nanoparticles and chitosan composites

作者：Chen, Guohe[1];Wang, Hai[1];Han, Li[1];Yang, Ningcan[1];Hu, Baowei[1];Qiu, Muqing[1];Zhong, Xin[1]

机构：[1]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China

年份：2021

卷号：327

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:000637200400016)、、EI(收录号：20204909567272)、Scopus(收录号：2-s2.0-85096869510)、WOS

基金：This work is supported by the National Natural Science Foundation of China (No. 21876115) and Natural Science Foundation of Zhejiang Province, China (No. LGF20C030001). Authors are very grateful for their supports.

语种：英文

外文关键词：FeS nanoparticles; Biochar; U(vi); Removal

外文摘要：The new biochar supported with FeS nanoparticles and chitosan composites (chitosan-FeS@biochar) was prepared and its performance to remove U(VI) ions in aqueous solution was investigated. The results showed that chitosan-FeS@biochar as an efficient adsorbent for treating the environmental pollution was high stability and effective uptake capacity of U(VI). The equilibrium uptake capacity of the chitosan-FeS@biochar at pH 4.16, 100mg/L of U(VI) and 308 K for U(VI) reached 92.45mg/g. The superior adsorption performance could be attributed to: (1) a lot of functional groups were observed on the surface of chitosan-FeS@biochar; (2) FeS nanoparticles could react with U(VI); (3) chitosan prevented FeS nanoparticles aggregation and enhanced their stability and removal efficiency. The suggested reaction mechanism mainly was electrostatic attractive, surface complexation, chemical precipitation and reductive reaction. The chemical stability of chitosan-FeS@biochar was very well. It was also environmentally friendly materials with good reusability in wastewater treatment with low replacement costs. (C) 2020 Elsevier B.V. All rights reserved.