The adsorption properties of two cyclodextrin-epichlorohydrin polymers to remove Direct Red 83:1 textile dye from wastewater solutions was evaluated. Adsorption studies were performed in a batch reactor, and the efficiency of the polymers under different parametric values such as contact time, adsorbent dosage, initial dye concentration, pH of initial solution and temperature was followed by spectrophotometry. Both Langmuir and Freundlich equations were used to fit the equilibrium isotherms and the kinetic data were analyzed by the pseudo-first-order and pseudo-second-order models. Adsorption process follows a pseudo-second-order kinetic and was influenced by intraparticle diffusion model, dye concentration and contact time, reaching equilibrium within the first 30 min. Experimental data were better fitted to Freundlich isotherm model than to Langmuir and Temkin isotherms. Since about 93% of dye removal was achieved under optimized conditions, the α-cyclodextrin-epichlorohydrin polymer seems to be a useful device for removing Direct Red 83:1 from aqueous solutions and industrial effluents.

评估了两种环糊精-表氯醇聚合物从废水溶液中去除Direct Red 83：1纺织染料的吸附性能。在间歇反应器中进行吸附研究，并通过分光光度法跟踪在不同参数值（例如接触时间，吸附剂剂量，初始染料浓度，初始溶液的pH和温度）下聚合物的效率。Langmuir和Freundlich方程均用于拟合平衡等温线，并通过拟一阶和拟二阶模型分析了动力学数据。吸附过程遵循拟二级动力学，并受颗粒内扩散模型，染料浓度和接触时间的影响，在最初的30分钟内达到平衡。与Langmuir和Temkin等温线相比，实验数据更适合Freundlich等温线模型。由于在最佳条件下可实现约93％的染料去除，因此α-环糊精-表氯醇聚合物似乎是从水溶液和工业废水中去除直接红83：1的有用装置。