Adsorption and antibacterial studies of a novel hydrogel adsorbent based on ternary eco-polymers doped with sulfonated graphene oxide developed from upcycled plastic waste

Marwa H Gouda; M M Khowdiary; Hind Alsnani; N Roushdy; M Elsayed Youssef; Mohamed Elnouby; Noha A Elessawy

doi:10.1016/j.jconhyd.2024.104362

Adsorption and antibacterial studies of a novel hydrogel adsorbent based on ternary eco-polymers doped with sulfonated graphene oxide developed from upcycled plastic waste

J Contam Hydrol. 2024 May 7:264:104362. doi: 10.1016/j.jconhyd.2024.104362. Online ahead of print.

Authors

Marwa H Gouda¹, M M Khowdiary², Hind Alsnani³, N Roushdy⁴, M Elsayed Youssef⁵, Mohamed Elnouby⁶, Noha A Elessawy⁷

Affiliations

¹ Polymer Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City 21934, Alexandria, Egypt.
² Department of Chemistry, Faculty of Applied Science, Lieth Collage, Umm Alqura Universty, Makkah 24382, Saudi Arabia.
³ Department of Physics, Faculty of Applied Science, Lieth Collage, Umm Al-Qura University, Makkah 24382, Saudi Arabia.
⁴ Electronics Materials Dep. Advanced Technology& New Materials Research Institute, City of Scientific Research & Technological Applications (SRTA-City), New Borg El-Arab City, P.O. Box 21934, Alexandria, Egypt.
⁵ Computer Based Engineering Applications Department, Informatics Research Institute IRI, City of Scientific Research and Technological Applications City (SRTA-City), Alexandria 21934, Egypt.
⁶ Nanomaterials and Composites Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria 21934, Egypt.
⁷ Computer Based Engineering Applications Department, Informatics Research Institute IRI, City of Scientific Research and Technological Applications City (SRTA-City), Alexandria 21934, Egypt. Electronic address: nony_essawy@yahoo.com.

PMID: 38735087
DOI: 10.1016/j.jconhyd.2024.104362

Abstract

A novel ternary blended polymer composed of cost-effective and readily available polymers was synthesized using poly (vinyl alcohol) (PVA), iota carrageenan (IC), and poly (vinyl pyrrolidone) (PVP). Sulfonated graphene oxide (SGO), prepared from recycled drinking water bottles, was utilized as a doping agent. Varying amounts (1-3 wt%) were combined into the polymer matrix. The produced hydrogel film was examined as a potential adsorbent hydrogel film for the removal of methylene blue (MB) and Gentamicin sulfate (GMS) antibiotic from an aqueous solution. The experimental results demonstrate that the presence of SGO significantly increased the adsorption efficiency of PVA/IC/PVP hydrogel film. The antimicrobial tests revealed that the PVA/IC/PVP-3% SGO hydrogel film exhibited the most potent activity against all the tested pathogenic bacteria. However, the adsorption results for MB and GMS showed that the addition of 3 wt% SGO resulted in a removal percentage that was a two fold increase in the removal percentage compared with the undoped PVA/IC/PVP hydrogel film. Furthermore, the response surface methodology (RSM) model was utilized to examine and optimize several operating parameters, including time, pH of the solution, and initial pollutant concentration. The adsorption kinetics were better characterized by the pseudo-second-order kinetics model. The composite film containing 3 wt% SGO had a maximum adsorption capacity of 606 mg g^-1 for MB and 654 mg g^-1 for GMS, respectively. The generated nanocomposite hydrogel film demonstrated promising potential for application in water purification systems.

Keywords: Dye removal; Gentimicin sulfate removal; Iota carrageenan; Poly (vinyl alcohol); Sulfonated grapheme oxide; Water purification.