数字农科院2.0

Fenton-modified agricultural waste kenaf as an adsorbent for arsenic removal from wastewater: Material preparation, removal process and mechanism

文献类型： 外文期刊

作者： Hua Long;Xin Xu;Ju Luo;Kui Liu;Changya Chen;Wang Yu;Dan dan Liao

作者机构：

关键词： Agricultural waste kenaf;Arsenic removal by adsorption;Arsenic removal mechanism;Fenton modification;Treating waste with waste

期刊名称： Process Safety and Environmental Protection

ISSN： 0957-5820

年卷期： 2025 年 203 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Arsenic pollution in water bodies represents a significant environmental challenge confronting humanity. Among the available remediation strategies, adsorption technology emerges as a crucial approach. In this study, an adsorbent was prepared from the agricultural waste kenaf (WK) and applied to the treatment of arsenic-containing wastewater. The results demonstrated that a high-performance adsorbent for arsenic removal could be successfully developed through NaOH pretreatment followed by Fenton oxidation modification. Under optimized conditions, the arsenic removal efficiency of Fenton-modified waste kenaf (FMWK) can exceed 90 %, and the spent material can be recycled and reused. The kinetics and thermodynamics results indicated the coexistence of physical and chemical adsorption in the arsenic removal process. Equilibrium studies revealed that As(V) adsorption onto FMWK followed the Sips isotherm model, suggesting a mixed adsorption process occurring on heterogeneous surfaces. Arsenic removal mechanism involved a combination of physical adsorption, surface complexation, adsorption co-precipitation, and electrostatic interactions. Using FMWK to treat arsenic-containing wastewater not only enables efficient arsenic removal but also facilitates the resource utilization of WK, achieving the goal of treating waste with waste.

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