文献类型：期刊文献

英文题名：Enhanced complexation and electrostatic attraction through fabrication of amino- or hydroxyl-functionalized Fe/Ni-biochar composite for the adsorption of Pb(II) and Cd(II)

作者：Wang, Hai[1];Chen, Qian[1];Xia, Haixin[1];Liu, Renrong[1];Zhang, Yaohong[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：328

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:001200297600001)、、EI(收录号：20233814745364)、Scopus(收录号：2-s2.0-85171330699)、WOS

基金：Financial supported from 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) are acknowledged.

语种：英文

外文关键词：Biochar; Fe-Ni nanoparticles; Amination; Hydroxylation; Pb(II)/Cd(II) removal

外文摘要：To enhance Pb(II) and Cd(II) elimination, new composites (FeNi-RSN-(OH)(NH2) and FeNi-RSN-OH) were fabricated by loading biochar with Fe -Ni nanoparticles and functionalizing biochar by amination/hydroxylation in the study. The maximum sorption capacities of both adsorbents toward Pb(II)/Cd(II) were 217.09/209.36 mg/ g and 242.15/229.52 mg/g, respectively, which were 4.30-4.79 times higher than those of the raw biochar. The significantly enhanced adsorption capacity could be attributed to the increased O/N-containing groups and Fe -Ni nanoparticles on the adsorbent surface. The introduction of Fe -Ni nanoparticles and O/N-containing groups promoted the complexation and electrostatic interactions and made them playing major roles in the adsorption. Besides, ions exchange and physical adsorption played non-negligible roles in the adsorption process. Additionally, the both adsorbents exhibited favorable anti-interference ability and cycling stability. Taken together, the study revealed that the new biochar composites of FeNi-RSN-(OH)(NH2) and FeNi-RSN-OH could be used as a reusable magnetic adsorbents with promising prospect in current practice for the effective remediation of heavy metals-bearing wastewater. The study not only provided a feasible design, synthesis and optimization strategy of biochar for heavy metals contaminants removal, but also realized the sustainable utilization of waste.