基于 QPPO/PVA 的商用阴离子交换膜在去除废水中碱性红 88 染料中的应用。
Application of QPPO/PVA based commercial anion exchange membrane as an outstanding adsorbent for the removal of Eosin-B dye from wastewaters.
机构信息
Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah 27272, United Arab Emirates.
Research Institute of Sciences and Engineering (RISE), University of Sharjah, Sharjah 27272, United Arab Emirates.
出版信息
Chemosphere. 2023 Apr;321:138006. doi: 10.1016/j.chemosphere.2023.138006. Epub 2023 Jan 30.
Commercially available QPPO/PVA based anion exchange membrane (AEM) BIII was to inquire the percentage discharge of anionic dye Eosin-B (EB) at terrain temperature from wastewater. The impact of EB initial concentration, membrane dosage, ionic strength, contact time and temperature on EB percentage removal was contemplated. The EB percentage removal was increased from 22 to 99.56% and 38.15-99.56% with contact time and membrane dosage respectively while decreased from 99.56 to 29%, 99.56 to 54.61% and 99.56 to 92.22% with enhancing initial concentration of EB, ionic strength and temperature respectively. Nonlinear isotherm models were utilized to demonstrate EB adsorption onto AEM BIII. Attained results exhibited that nonliner Freundlich isotherm model best fitted to EB adsorption onto AEM BIII. For EB adsorption onto AEM BIII, adsorption kinetics were inquired in detail by using several kinetic models but EB adsorption nicely fitted to pseudo-second-order kinetics. Similarly thermodynamic analysis was performed and results pointed to an exothermic adsorption of EB onto AEM BIII. The membrane could be reused for four concecutive cycles with loosing its efficiency.
市售的 QPPO/PVA 基阴离子交换膜（AEM）BIII 被用来研究在实际温度下从废水中去除阴离子染料曙红 B（EB）的百分比。考察了 EB 初始浓度、膜剂量、离子强度、接触时间和温度对 EB 去除率的影响。随着接触时间和膜剂量的增加，EB 的去除率分别从 22%增加到 99.56%和 38.15%-99.56%，而随着 EB 初始浓度、离子强度和温度的增加，EB 的去除率分别从 99.56%降低到 29%、99.56%降低到 54.61%和 99.56%降低到 92.22%。利用非线性等温线模型来描述 EB 在 AEM BIII 上的吸附。结果表明，非线性 Freundlich 等温线模型最适合描述 EB 在 AEM BIII 上的吸附。对于 EB 在 AEM BIII 上的吸附动力学，通过使用几种动力学模型进行了详细研究，但 EB 的吸附很好地符合准二级动力学。同样进行了热力学分析，结果表明 EB 在 AEM BIII 上的吸附是放热的。该膜可以重复使用四次，而不会降低其效率。
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