文献类型：期刊文献

英文题名：Fabrication of two novel amino-functionalized and starch-coated CuFe₂O₄-modified magnetic biochar composites and their application in removing Pb²⁺ and Cd²⁺ from wastewater

作者：Chen, Qian[1];Zhang, Yaohong[1];Xia, Haixin[1];Liu, Renrong[1];Wang, Hai[1]

机构：[1]Shaoxing Univ, Sch Life & Environm Sci, Sch Chem & Chem Engn, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China

年份：2024

卷号：258

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：SCI-EXPANDED(收录号：WOS:001152999900001)、、WOS

基金：This research was supported by the Joint Funds of the Zhejiang Provincial Natural Science Foundation of China under Grant No. LZY21C030001, National Natural Science Foundation of China under Grant No. 31500321 and Open Funds of Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process (jxhxpctgytdjs2305) .

语种：英文

外文关键词：Iron-copper loaded biochar; Starch -coated; Lead and cadmium removal

外文摘要：Novel magnetic biochar composites (SFeCu@SBCO and FeCu@SBCO-NH2) were fabricated by modifying oxidized sawdust biochar (SBCO) with Fe/Cu loading, starch-coating/amination, characterized (FTIR, XRD, BET, SEM-EDS and XPS) and applied in capturing Pb2+ and Cd2+ from wastewater. Adsorption experiments revealed that SFeCu@SBCO and FeCu@SBCO-NH2 exhibited extraordinary adsorption performance toward Pb2+/Cd2+ with the maximum adsorption capacity reaching 184.26/173.35 mg g(-1) and 201.43/190.81 mg g(-1), respectively, which were >5 times higher than those of SBC. The great increase in adsorption capacity of the two adsorbents was ascribed to the introduction of CuFe2O4 and starch/amino groups. Pb2+ and Cd2+ adsorption was an endothermic reaction controlled by monolayer chemisorption. Complexation and electrostatic attraction were the two predominant mechanisms. Besides, ion exchange together with physical adsorption also occurred during the adsorption. Additionally, the both adsorbents displayed favorable stability and reusability as well as desirable anti-interfering ability to other metal cations. Taken together, the both adsorbents could be utilized as reusable magnetic adsorbents with promising prospect in the effective remediation of Pb2+/Cd2+ contaminated water. The study not only contributed to the better understanding of biochar modification strategy and the application of modified biochar in heavy metals pollutants removal, but also realized resource utilization of biomass waste.