In this work decolourisation of organic dyes such as Reactive Blue 52 and Reactive Orange 107 from aqueous solution by PANI-CoCl₂ composite have been studied. Polyaniline (PANI) is a viable conducting polymer because of its unique proton dopability, excellent redox recyclability, chemical stability, variable electrical conductivity, low cost and ease of synthesis. The morphology of PANI-CoCl₂ composite have been characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. It is also shown that many factors affected the adsorption rate, such as adsorbent mass, contact time, variation of pH, agitation speed, dye concentration and temperature. The capacity of the adsorbent is tested using recyclability process. Adsorption of Reactive Blue 52 and Reactive Orange 107 by PANI-CoCl₂ follows pseudo-second-order kinetics and the best-fit isotherm is the Langmuir model which is confirmed by using correlation coefficients in ANOVA technique. The thermodynamic parameters like changes in free energy, enthalpy and entropy have been also calculated.

中文翻译：

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以PANI-CoCl2为吸附剂的水溶液中活性蓝52和活性橙107染料的动力学，等温线和热力学模型

在这项工作中，已经研究了通过PANI-CoCl ₂复合材料从水溶液中脱色有机染料（如活性蓝52和活性橙107）的过程。聚苯胺（PANI）是一种可行的导电聚合物，因为它具有独特的质子掺杂性，出色的氧化还原再循环性，化学稳定性，可变的电导率，低成本且易于合成。PANI-CoCl ₂的形态通过扫描电子显微镜和傅里叶变换红外光谱对复合材料进行了表征。还显示出许多因素影响吸附速率，例如吸附剂质量，接触时间，pH的变化，搅拌速度，染料浓度和温度。吸附剂的容量使用可回收性过程进行测试。PANI-CoCl ₂对活性蓝52和活性橙107的吸附遵循伪二级动力学，最佳拟合等温线为Langmuir模型，该模型通过在ANOVA技术中使用相关系数进行了确认。还计算了热力学参数，例如自由能，焓和熵的变化。