ABSTRACT Pharmaceutical compounds are considered emerging environmental pollutants that have a potential harmful impact on environment and human health. In this study, the spiky green horse-chestnut shell was used for the biosorption and removal of acetaminophen from aqueous solution. It was analysed how the parameters, like contact time, pH, mass of biosorbent and temperature, influence the effectiveness of acetaminophen removal from aqueous solutions. The equilibrium was quickly achieved after 10 min (∼60%). The amount of acetaminophen adsorption slightly increased with the increase of the mass of biosorbent, and for example for an aqueous solution containing 10 mg/L of acetaminophen adsorption was increased from 62% to 81%. The promising results obtained at pH ranged between 2 and 9, which shows that the adsorption of acetaminophen did not depend on the pH and it may be a consequence of the predominant microporous sorbent and its surface charge. The result is better correlated to a pseudo-second-order kinetic model of type 2 (r 2 = 0.9992) than pseudo-first-order. A sorption mechanism of acetaminophen on biosorbent was also proposed. The sorption of acetaminophen over biosorbent is mainly preceded by hydrophilic interactions between hydroxyl and carbonyl groups in pharmaceutical molecules and hydroxyl and carboxyl groups on the surface of biosorbent.

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用生物吸附剂吸附对乙酰氨基酚作为水溶液净化方法的研究

摘要 药物化合物被认为是新出现的环境污染物，对环境和人类健康有潜在的有害影响。在这项研究中，尖尖的绿色七叶树壳用于生物吸附和去除水溶液中的对乙酰氨基酚。分析了接触时间、pH、生物吸附剂质量和温度等参数如何影响从水溶液中去除对乙酰氨基酚的有效性。10 分钟后迅速达到平衡（~60%）。随着生物吸附剂质量的增加，对乙酰氨基酚的吸附量略有增加，例如含10mg/L的水溶液对乙酰氨基酚的吸附量从62%增加到81%。在 pH 值介于 2 和 9 之间时获得的有希望的结果 这表明对乙酰氨基酚的吸附不依赖于 pH 值，这可能是主要微孔吸附剂及其表面电荷的结果。与伪一级动力学模型相比，结果与 2 类伪二级动力学模型 (r 2 = 0.9992) 的相关性更好。还提出了对乙酰氨基酚在生物吸附剂上的吸附机制。对乙酰氨基酚在生物吸附剂上的吸附主要是通过药物分子中的羟基和羰基与生物吸附剂表面的羟基和羧基之间的亲水相互作用进行的。还提出了对乙酰氨基酚在生物吸附剂上的吸附机制。对乙酰氨基酚在生物吸附剂上的吸附主要是通过药物分子中的羟基和羰基与生物吸附剂表面的羟基和羧基之间的亲水相互作用进行的。还提出了对乙酰氨基酚在生物吸附剂上的吸附机制。对乙酰氨基酚在生物吸附剂上的吸附主要是通过药物分子中的羟基和羰基与生物吸附剂表面的羟基和羧基之间的亲水相互作用进行的。