ABSTRACT Biomass-based carbon was modified and used as an efficient bisphenol A (BPA) sorbent. The simple and environmentally friendly modification method produced sorbent with a capacity of 41.5 mg/g. The raw material was modified with FeCl3 (Fe-CR), treated with hydrochloric acid (H-CR) or modified with CaCl2 (Ca-CR). Batch sorption experiments were performed to evaluate the effects of the initial pH, sorbent dosage, temperature, and contact time on BPA removal. BPA removal with modified carbons was notably higher than that with unmodified carbon. All sorbent materials exhibited very high sorption capacities and compared favourably to materials reported in the literature. Several isotherms were applied to describe the experimental results of Fe-CR, H-CR, and Ca-CR modified carbon residues and the Sips model showed the best fit for all sorbents. Kinetic studies for the best sorbent material (Fe-CR) showed that the sorption process follows Elovich kinetics. Desorption cycles were implemented, and sorption capacity remained with three cycles. GRAPHICAL ABSTRACT

中文翻译：

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基于生物质的碳从水中去除双酚 A：等温线、动力学和热力学研究

摘要 生物质基碳被改性并用作高效的双酚 A (BPA) 吸附剂。简单且环保的改性方法生产的吸附剂容量为 41.5 mg/g。原料用FeCl3（Fe-CR）改性，用盐酸（H-CR）处理或用CaCl2（Ca-CR）改性。进行批量吸附实验以评估初始 pH 值、吸附剂剂量、温度和接触时间对 BPA 去除的影响。改性碳的 BPA 去除率明显高于未改性碳。所有吸附剂材料都表现出非常高的吸附能力，并且与文献中报道的材料相比具有优势。应用了几个等温线来描述 Fe-CR、H-CR 和 Ca-CR 改性碳残留物的实验结果，并且 Sips 模型显示出最适合所有吸附剂。最佳吸附剂材料 (Fe-CR) 的动力学研究表明，吸附过程遵循 Elovich 动力学。实施解吸循环，并且吸附能力保持三个循环。图形概要