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<p>This manuscript describes the design of a conjugated copolymer matrix of poly (ethylene dioxythiophene) and polypyrrole impregnated with silver and zinc oxide nanoparticles, encapsulated on an activated charcoal membrane for the removal of <i>E. coli</i> and total coliforms from wastewater. The encapsulation of silver and zinc oxide nanoparticles in the copolymer matrix was confirmed by X-Ray diffractogram, and morphological characterization. The synthesized nanocomposites have excellent biocidal potential against <i>E. coli</i> and total coliform bacteria. The most important requirement of water filtration membranes is the total reduction in bacteria from wastewater. The nanocomposite-based membranes were found to be efficient for this purpose. The output count of <i>E. coli</i> and total coliform bacteria in the effluent was below the detection limit (&lt; 10 colony forming units/100&#xa0;ml). The results indicated that the stronger antibacterial activity of the nanocomposite impregnated activated charcoal membrane may be a result of electrostatic interactions. Bacterial strains such as <i>E. coli</i> and total coliform bacteria with an extracellular capsule have fewer negative charges and are less prone to adsorption to the positively charged surface of conjugated copolymer-based nanocomposites. Overall, the findings suggest the use of these nanocomposite membranes as an effective and sustainable point-of-use water treatment technology.</p>

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Designing Nanocomposites of Conjugated Copolymers for the Removal of Bacterial Contamination from Polluted Water

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Sundeep Kumar Dhawan,
  • Surbhi Kohli,
  • Ridham Dhawan,
  • Vikas Garg,
  • Hema Bhandari,
  • Haritma Chopra,
  • Badira M. Alshehri,
  • N. S. Abd-El-Gawaad

摘要

This manuscript describes the design of a conjugated copolymer matrix of poly (ethylene dioxythiophene) and polypyrrole impregnated with silver and zinc oxide nanoparticles, encapsulated on an activated charcoal membrane for the removal of E. coli and total coliforms from wastewater. The encapsulation of silver and zinc oxide nanoparticles in the copolymer matrix was confirmed by X-Ray diffractogram, and morphological characterization. The synthesized nanocomposites have excellent biocidal potential against E. coli and total coliform bacteria. The most important requirement of water filtration membranes is the total reduction in bacteria from wastewater. The nanocomposite-based membranes were found to be efficient for this purpose. The output count of E. coli and total coliform bacteria in the effluent was below the detection limit (< 10 colony forming units/100 ml). The results indicated that the stronger antibacterial activity of the nanocomposite impregnated activated charcoal membrane may be a result of electrostatic interactions. Bacterial strains such as E. coli and total coliform bacteria with an extracellular capsule have fewer negative charges and are less prone to adsorption to the positively charged surface of conjugated copolymer-based nanocomposites. Overall, the findings suggest the use of these nanocomposite membranes as an effective and sustainable point-of-use water treatment technology.