详细信息
Fabrication of two novel amino-functionalized and starch-coated CuFe2O4-modified magnetic biochar composites and their application in removing Pb2+ and Cd2+ from wastewater ( EI收录)
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] School of Life and Environmental Sciences, School of Chemistry and Chemical Engineering, Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University, Zhejiang, Shaoxing, 312000, China
年份:2024
卷号:258
外文期刊名:International Journal of Biological Macromolecules
收录:EI(收录号:20240215346963)、Scopus(收录号:2-s2.0-85181582104)
语种:英文
外文关键词:Adsorption - Cadmium - Chemicals removal (water treatment) - Computer software reusability - Copper compounds - Fabrication - Ion exchange - Iron - Iron compounds - Lead compounds - Reusability - Starch - Water pollution
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. ? 2023 Elsevier B.V.
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