Department of Chemistry, National Institute of Technology, Calicut, 673601, Kerala, India.
Department of Chemistry, Mannaniya College of Arts and Science, Affiliated to the University of Kerala, Trivandrum, 695609, Kerala, India.
J Environ Manage. 2024 Sep;368:122068. doi: 10.1016/j.jenvman.2024.122068. Epub 2024 Aug 7.
Efficient filtering of dyes is essential for the protection of ecosystem and human health due to the considerable water pollution caused by the effluents released from the sector. We present a simple, scalable UV radiation-assisted method for treating methyl orange dye-polluted water from the textile industry using zirconium phosphate-loaded polyaniline-graphene oxide (PGZrP) composite. The new material was synthesized by sonochemically incorporating a polyaniline-graphene oxide composite with hydrothermally synthesized zirconium phosphate. The efficacy of PGZrP in eliminating methyl orange was evaluated using experimental conditions, and the adsorption capacity was investigated as a function of pH, temperature, adsorbent dosage, and adsorption period. The system follows Langmuir adsorption isotherm with pseudo-second-order kinetics. Thermodynamics studies showed that enthalpy (H°) and entropy (S°) values are positive, indicating that the dye adsorption increases with increasing temperature and is an endothermic reaction. The maximum adsorption capacity was found to be 36.45379 mg/g for methyl orange. Using the COMSOL Multiphysics CFD Platform, an attempt was made to check the temperature and concentration profile of a PGZrP composite in a real industrial system. The predicted result shows that there is no significant temperature change in the material during the adsorption process and the concentration of dye is mainly located on the top region of the bed. The developed zirconium phosphate decorated polyaniline-graphene oxide composite can be successfully utilized for the effective removal of methyl orange from industrial wastewater in bulk quantity which is coming from the textile industry, and the composite can be reused for several cycles with good efficiency. In this work, we have designed a miniaturized proof of concept to remove methyl orange from water which showed good dye removal efficiency.
由于纺织行业排放的废水会造成严重的水污染，因此高效过滤染料对于保护生态系统和人类健康至关重要。我们提出了一种简单、可扩展的紫外辐射辅助方法，使用负载磷酸锆的聚苯胺-氧化石墨烯（PGZrP）复合材料处理来自纺织工业的甲基橙染料污染水。通过超声将聚苯胺-氧化石墨烯复合材料与水热合成的磷酸锆结合，合成了新材料。通过实验条件评估了 PGZrP 去除甲基橙的效果，并研究了吸附剂用量、吸附时间、pH 值和温度对吸附性能的影响。该体系遵循 Langmuir 吸附等温线和拟二级动力学模型。热力学研究表明，焓（H°）和熵（S°）值为正值，表明染料吸附随温度升高而增加，是一个吸热反应。最大吸附容量为 36.45379 mg/g。使用 COMSOL Multiphysics CFD 平台，尝试检查实际工业系统中 PGZrP 复合材料的温度和浓度分布。预测结果表明，在吸附过程中，材料的温度没有明显变化，染料的浓度主要位于床层的顶部区域。开发的磷酸锆修饰的聚苯胺-氧化石墨烯复合材料可成功用于批量去除来自纺织工业的工业废水中的甲基橙，并且该复合材料具有良好的效率，可重复使用几个周期。在这项工作中，我们设计了一个小型概念验证，以去除水中的甲基橙，结果显示出良好的染料去除效率。
