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首页> 外文期刊>Journal of Polymers and the Environment >Adsorptive Removal of Diuron Herbicide on Carbon Nanotubes Synthesized from Plastic Waste
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Adsorptive Removal of Diuron Herbicide on Carbon Nanotubes Synthesized from Plastic Waste

机译：敌草隆除草剂在塑料废料碳纳米管上的吸附去除

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In this study, carbon nanotubes (CNTs) were synthesized from waste polyethylene bottles and their use as an adsorbent for the removal of diuron herbicide from aqueous solution was evaluated. Batch adsorption was performed by varying adsorbent dosage, initial concentration, contact time, and temperature. Kinetic models applied to experimental data indicated that the pseudo-secondorder model had the best fit. The equilibrium data were analyzed using different isotherm models. The adsorption capacity of CNTs for diuron removal, determined using the Hill isotherm, was approximately 40.37 mg/g at 303 K. From thermodynamic studies, the values of Delta H degrees (kJ/mol) and Delta S degrees [kJ/(mol K)] were calculated as -17.307 and -0.0528, respectively, which suggested that the adsorption process was exothermic. The negative values of Delta G degrees at three different temperatures indicated that adsorption of diuron on CNTs was favorable.
机译：在这项研究中，从废弃的聚乙烯瓶中合成了碳纳米管（CNT），并评估了它们作为吸附剂从水溶液中去除敌草隆除草剂的用途。通过改变吸附剂量，初始浓度，接触时间和温度进行间歇吸附。动力学模型应用于实验数据表明，伪二阶模型具有最佳拟合。使用不同的等温线模型分析平衡数据。使用希尔等温线测定的CNT在303 K下的吸附量可去除二氢呋喃，约为40.37 mg / g。根据热力学研究，ΔH度（kJ / mol）和Delta S度[kJ /（mol K ）]的计算值分别为-17.307和-0.0528，表明吸附过程是放热的。在三个不同温度下的Delta G度的负值表明，对苯二酚在CNT上的吸附是有利的。

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