Laboratoire de Génie des Procédés Chimiques (LGPC), Département de Génie des Procédés, Faculté de Technologie, Université Ferhat Abbas, Sétif-1- 19000, Algeria.
Laboratoire de Génie des Procédés Chimiques (LGPC), Département de Génie des Procédés, Faculté de Technologie, Université Ferhat Abbas, Sétif-1- 19000, Algeria.
Int J Biol Macromol. 2018 Jul 15;114:1345-1353. doi: 10.1016/j.ijbiomac.2018.02.146. Epub 2018 Feb 24.
The present work focused on the performance of chitosan/polyaniline (Cht-PANI) composite for removing tartrazine dye from aqueous solutions. The adsorbent was characterized using SEM, XRD, FTIR, and TGA/DTA techniques. The effects of pH, initial dye concentration, contact time, and temperature on azo dye removal were studied. The kinetics and isotherm of tartrazine removal follow pseudo-second-order kinetics and the Freundlich isotherm, respectively. The Langmiur isotherm model exhibted a maximum adsorption capacity of 584.0 mg/g. The thermodynamic parameters were calculated and the negative values of ΔG° and positive value of ΔH° indicate that the adsorption processes are spontaneous and endothermic in nature. In addition, the resulting adsorbent reusability was demonstrated over four cycles, indicating that the Cht-PANI is a very promising adsorbent for removal of toxic pollutants from aqueous solutions.
本工作主要研究壳聚糖/聚苯胺（Cht-PANI）复合材料对水溶液中食用柠檬黄的去除性能。采用 SEM、XRD、FTIR、TGA/DTA 等技术对吸附剂进行了表征。考察了 pH 值、初始染料浓度、接触时间和温度对偶氮染料去除的影响。食用柠檬黄的去除动力学和等温线分别遵循拟二级动力学和 Freundlich 等温线。Langmuir 等温线模型表现出的最大吸附容量为 584.0 mg/g。计算了热力学参数，ΔG°为负值，ΔH°为正值，表明吸附过程是自发的和吸热的。此外，证明了所得吸附剂在四个循环中的可重复使用性，表明 Cht-PANI 是一种很有前途的吸附剂，可用于从水溶液中去除有毒污染物。
