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Adsorption Study of Cu2+ by Using CO2/Electric Potential-Responsive Polymeric Monoliths Prepared by Medium Internal Phase Emulsion

Year: 2024

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Environmental contamination resulting from heavy metals is regarded as a fundamental issue in environmental biology. In this study, a polyacrylamide-based adsorbent stabilized by a styrene–maleic anhydride copolymer (SMA) functionalized with l -histidine was utilized for the removal of copper metal from aqueous solutions. The objective of this research is to investigate the feasibility of utilizing this adsorbent for the purpose of adsorbing copper ions (Cu 2+ ) from an aqueous solution under various environmental conditions. The Taguchi method was employed to figure out the optimal conditions for removal based on a series of 25 experimental trials. The study’s findings indicated that Cu 2+ removal had an efficiency range of 42.9% to 81.8%, with variations shown based on the combination of controllable parameters. The controllable parameters of Cu 2+ removal were shown to have a variety of influences, with pH having the most impact, followed by initial Cu 2+ concentration, contact time, and the stabilizer’s l -histidine mole ratio, in descending order. We present an environmentally beneficial desorption and regeneration concept that involves the use of a polymeric adsorbent that responds to carbon dioxide (CO 2 ) and electric potential (EP). This concept has not been previously reported and is exhibited through the use of the medium internal phase emulsion (MIPE) method. Most notably, at room temperature and atmospheric pressure, CO 2 bubbling can desorb and recover Cu 2+ ions in 5 min. Then, by simply applying EP, the adsorbent can be returned to its adsorptive form and reused after the CO 2 has been removed.

Source: ACS Applied Polymer Materials

DOI: 10.1021/acsapm.4c01409

Authors: Maede Ramezanpour, Abbas Rezaee Shirin-Abadi, Mojtaba Enayati

Institutions: Shahid Beheshti University, Troy University

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $4,500