Green Synthesis of Iron Nanoparticles-Modified Biochar For Efficient Adsorption of Cd(II) From Aqueous Solution

文献类型： 外文期刊

第一作者： Jiang, Wenyan

作者： Jiang, Wenyan;Chen, Wei;Liao, Jie;Liang, Xuelian;Wang, Haijun;Luo, Lihong;Li, Tao;Wang, Tianshun;Xing, Yihao

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关键词： Green synthesis; Banana peel extract; BC-FeNPs; Cd(II) removal

期刊名称：WATER AIR AND SOIL POLLUTION （ 影响因子：3.8； 五年影响因子：3.6 ）

ISSN： 0049-6979

年卷期： 2024 年 235 卷 10 期

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收录情况： SCI

摘要： In recent years, the technology of producing zero-valent iron nanoparticles from extracts of natural products has attracted more and more attention due to its advantages of green and environmental protection. In this study, green iron nanoparticles-modified biochar materials (BC-FeNPs) were prepared using a simple method of biochar, FeSO4 and banana peel extract. The characterization results showed that Fe2+ was reduced to Fe0 by banana peel extract, which proved the successful synthesis of BC-FeNPs. Biochar loaded with iron nanoparticles (BC-FeNPs) is more conducive to the removal of Cd(II). The effect of varying the dosage of BC-FeNPs and the initial pH value on the removal of Cd(II) was found to be significant. The maximum adsorption of Cd(II) by BC-FeNPs was 51.6 mg/g when the BC-FeNPs dosage was 0.05 g and the temperature was 323.15 K. The adsorption process of Cd(II) by BC-FeNPs can be accurately described by the Langmuir isotherm model and pseudo-second-order model. The adsorption mechanism of Cd(II) on BC-FeNPs mainly involves complexation and precipitation. This study demonstrated that BC-FeNPs prepared from FeSO4, banana peel extract and biochar with a facile and non-toxic approach, can be used as a new green material for the treatment of Cd(II) polluted wastewater.

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