Lead and antimony removal from wastewater via tea residue derived hydrochar: Immobilization capacity and industrial practicality

作者：Xiangcheng Yang, Jianfeng Yu, Yaping Liu, Ran Duan, Qilian Tang, Lin Tian, Rui Xu, Huabin Wang, Tai Xiang · 发表于：Industrial Crops and Products · 年份：2025 · DOI：10.1016/j.indcrop.2025.121158 · 被引用次数：12 · 研究领域：Adsorption and biosorption for pollutant removal、Arsenic contamination and mitigation、Phosphorus and nutrient management

Lead and antimony often co-occurr in mining wastewater. In this study, magnetic hydrochar (MHC) was synthesized from tea residue using a simple hydrothermal treatment. Various characterization techniques confirmed the incorporation of iron into the tea residues. The MHC demonstrated excellent ability to remove both Pb(II) and Sb(III) with adsorption capacity of 328.2 and 411.1 mg/g, respectively. Furthermore, the practical applicability of MHC was evaluated through continuous columns as well as a real wastewater purification study. This work provided insights into the potential of MHC as an environmentally functional material for purifying heavy metal-polluted wastewater.