数字农科院2.0

Microwave-assisted one-pot preparation of magnetic cactus-derived hydrochar for efficient removal of lead(Ⅱ) and phenol from water: Performance and mechanism exploration

文献类型： 外文期刊

作者： Jianhua Qu;Zhaolin Du;Yue Lei;Man Li;Wei Peng;Mengning Wang;Jie Liu;Qi Hu;Lei Wang;Yifan Wang;Ying Zhang

作者机构：

关键词： Adsorption;Cactus cladode;Magnetic hydrochar;Pb(Ⅱ);Phenol

期刊名称： Bioresource Technology

ISSN： 0960-8524

年卷期： 2023 年 388 卷

页码：

收录情况： SCIE（2023版） ; ; EI（2023版）

摘要： A novel magnetic hydrochar derived from cactus cladode (MW-MHC) was successfully synthesized through one-pot microwave-assisted process for efficiently removing lead(Pb)(Ⅱ) and phenol. From batch adsorption experiments, MW-MHC possessed the highest uptake amounts for Pb(Ⅱ) and phenol of 139.34 and 175.32 mg/g within 20 and 60 min, respectively. Moreover, the removal of Pb(Ⅱ) and phenol by MW-MHC remained essentially stable under the interference of different co-existing cations, presenting the excellent adaptability of MW-MHC. After three cycles of regeneration experiments, MW-MHC still had preferable adsorption performance and could be easily recycled, indicating its excellent reusability. Significantly, the uptake mechanisms of Pb(Ⅱ) on MW-MHC were regarded as chemical complexation, pore filling, precipitation, and electrostatic attraction. Meanwhile, the phenol uptake might be dominated by π-π interaction and hydrogen bonding. The above consequences revealed that MW-MHC with high removal performance was a promising adsorbent for remediating wastewater containing heavy metals and organics.

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