Polyoxometalate Supported on Bentonite as Efficient Adsorbent for the Removal of Methylene Blue Dye and Bacteria from Wastewater  

作　　者：Abrar Iskandrani Afra M. Baghdadi Fatma Bannani Abrar Iskandrani;Afra M. Baghdadi;Fatma Bannani(Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia;Department of Chemistry, College of Science, King Abdulaziz University (KAU), Jeddah, Saudi Arabia;Department of Biological Sciences, College of Science, University of Jeddah, Jeddah, Saudi Arabia)

机构地区：[1]Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia [2]Department of Chemistry, College of Science, King Abdulaziz University (KAU), Jeddah, Saudi Arabia [3]Department of Biological Sciences, College of Science, University of Jeddah, Jeddah, Saudi Arabia

出　　处：《Open Journal of Physical Chemistry》2024年第4期61-81,共21页物理化学期刊（英文）

摘　　要：Aiming at developing benign multiple decontamination water adsorbent, using low-cost natural raw local materials, we prepared a modified Bentonite supporting polyoxometalate ionic liquid composite hybrid, where each component targets a specific type of water contaminant. The composite material based on water-insoluble polyoxometalate-ionic liquid (POM-IL) consisting of antimicrobial tetraoctylammonium cations, and saturated Keggin-archetype polyoxometalate [PV3W9O40]6− anions, immobilized on Bentonite having an interesting dye removal capacity. The Q8[PV3W9O40]@Bentonite (Q8 = TetraOctylAmmonium), composite was tested for cationic dye removal from waste water. Batch experiments for the adsorption of Methylene Blue MB were conducted to investigate the effect factors containing the initial concentration, contact time, adsorbent amount, pH and Temperatures. According to the results of the kinetic study, the pseudo-second-order model fitted better the adsorption experimental data compared to the first order model. The experimental isotherm data were found to fit the Langumir model well compared to the Freundlich model. The thermodynamic parameters illustrated that the adsorption process was endothermic and spontaneous. The results of the present study showed that modified Bentonite represents an excellent multicomponent low-cost adsorbent for the removal of cationic dye and Bacteria from waste water.Aiming at developing benign multiple decontamination water adsorbent, using low-cost natural raw local materials, we prepared a modified Bentonite supporting polyoxometalate ionic liquid composite hybrid, where each component targets a specific type of water contaminant. The composite material based on water-insoluble polyoxometalate-ionic liquid (POM-IL) consisting of antimicrobial tetraoctylammonium cations, and saturated Keggin-archetype polyoxometalate [PV3W9O40]6− anions, immobilized on Bentonite having an interesting dye removal capacity. The Q8[PV3W9O40]@Bentonite (Q8 = TetraOctylAmmonium), composite was tested for cationic dye removal from waste water. Batch experiments for the adsorption of Methylene Blue MB were conducted to investigate the effect factors containing the initial concentration, contact time, adsorbent amount, pH and Temperatures. According to the results of the kinetic study, the pseudo-second-order model fitted better the adsorption experimental data compared to the first order model. The experimental isotherm data were found to fit the Langumir model well compared to the Freundlich model. The thermodynamic parameters illustrated that the adsorption process was endothermic and spontaneous. The results of the present study showed that modified Bentonite represents an excellent multicomponent low-cost adsorbent for the removal of cationic dye and Bacteria from waste water.

关 键 词：Adsorption BENTONITE POLYOXOMETALATES Ionic Liquid ANTIBACTERIAL Wastewater Treatment 

分 类 号：O64[理学—物理化学]