Abstract For the development of a bioadsorbent with enhanced adsorption properties to remove pentachlorophenol (PCP) pesticide from aqueous solutions, a modified chitosan material CHTA (1) was successfully obtained by crosslinking of chitosan (CHT) (I) with 2-hydroxy-1-naphthaldehyde. Functionalized chitosan CHTA was further modified by grafting with CuCl2 to prepare CHTAC (2). The obtained products were characterized with the necessary chemical and spectroscopic techniques and were studied as an adsorbent for PCP removal from aqueous solutions. The adsorption capacity of 1 and 2 improved by 94% and 76% respectively as compared to CHT. Kinetics and thermodynamic studies were carried out to understand equilibrium data of uptake capacity and kinetic rate of adsorption. Desorption properties and reusability of prepared materials were evaluated up to three consecutive adsorption-desorption cycles with different desorbing agents.

中文翻译：

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改性壳聚糖去除水溶液中五氯苯酚类农药

摘要 为了开发具有增强吸附性能的生物吸附剂以去除水溶液中的五氯苯酚 (PCP) 农药，通过壳聚糖 (CHT) (I) 与 2-羟基-1- 交联成功获得改性壳聚糖材料 CHTA (1)。萘醛。功能化壳聚糖 CHTA 通过接枝 CuCl2 进一步修饰，制备 CHTAC (2)。获得的产品通过必要的化学和光谱技术进行表征，并被研究作为从水溶液中去除 PCP 的吸附剂。与CHT相比，1和2的吸附容量分别提高了94%和76%。进行动力学和热力学研究以了解吸收能力和吸附动力学速率的平衡数据。