Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi, 46000, Pakistan.
Department of Chemistry, University of Science and Technology Bannu-28100, Khyber Pakhtunkhwa, Pakistan.
Chemosphere. 2023 May;322:138151. doi: 10.1016/j.chemosphere.2023.138151. Epub 2023 Feb 17.
Dyes contaminated water has caused various environmental and health impacts in developing countries especially Pakistan due to different industrial activities. This issue has been addressed in present study by fabricating biocompatible ionic liquid (IL) membranes for the remediation of Crystal violet (CV) dye from contaminated water. Novel ammonium-based IL such as Triethyl dimethyl ammonium sulfate ([CA][CH]SO); (A2) was synthesized and further functionalized with hydroxyapatite (HAp; extracted from refused fish scales) resulting in the formation of HA2. Furthermore, A2 and HA2 were then used to fabricate the cellulose acetate (CA) based membranes with different volume ratios. The physicochemical properties of membranes-based composite materials were investigated using FTIR, XRD, and TGA and used for the adsorption of CV in the closed batch study. In results, CA-HA2 (1:2) showed higher efficiency of 98% for CV reduction, after the contact time of 90 min. Kinetic studies showed that the adsorption of CV followed the pseudo-second-order kinetic model for all adsorbents. The antibacterial properties of the synthesized membrane were investigated against gram-positive strain, S. aureus and CA-A2 (1:1) showed better antibacterial properties against S. aureus. The developed membrane is sustainable to be used for the adsorption of CV and against bacteria.
染料污染水由于不同的工业活动对发展中国家，特别是巴基斯坦的环境和健康造成了各种影响。本研究通过制备生物相容性离子液体（IL）膜来修复受污染水中的结晶紫（CV）染料，解决了这个问题。新型铵基 IL 如三乙基二甲基硫酸铵（[CA][CH]SO）；（A2）与从废弃鱼鳞中提取的羟基磷灰石（HAp）进一步功能化，形成 HA2。然后，A2 和 HA2 用于以不同体积比制备纤维素乙酸酯（CA）基膜。使用 FTIR、XRD 和 TGA 研究了基于膜的复合材料的物理化学性质，并用于在封闭批处理研究中吸附 CV。结果表明，在接触时间为 90 分钟后，CA-HA2（1:2）对 CV 的还原效率最高，可达 98%。动力学研究表明，所有吸附剂的 CV 吸附均遵循拟二级动力学模型。合成膜的抗菌性能针对革兰氏阳性菌株 S. aureus 进行了研究，CA-A2（1:1）对 S. aureus 表现出更好的抗菌性能。所开发的膜可持续用于 CV 的吸附和抗菌。
