Combating river pathogens and reducing water pollution in Ulaanbaatar with silver nanoparticles

Altantogos Myagmar; Chuluunbaatar Otgonbaatar; Tamara Maamuu; Batkhishig Myagmar; Sarangerel Davaasambuu

doi:10.15625/2525-2518/20566

Author affiliations

Authors

Altantogos Myagmar \(^1\) Department of Chemistry and Biological Engineering, School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar 14201, Mongolia
\(^2\) Department of Medical Chemistry, School of Bio-Medicine, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia https://orcid.org/0000-0002-4545-9689
Chuluunbaatar Otgonbaatar \(^3\) Department of Radiology, College of Medicine, Seoul National University, Seoul 03080, South Korea
Tamara Maamuu \(^4\) Division of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar 13330, Mongolia
Batkhishig Myagmar \(^5\) Nest Education IT School, Ulaanbaatar 14192, Mongolia
Sarangerel Davaasambuu \(^6\) Department of Chemistry, School of Arts and Sciences, National University of Mongolia, Ulaanbaatar 14201, Mongolia

DOI:

https://doi.org/10.15625/2525-2518/20566

Keywords:

chemical reduction, silver nanoparticles, pathogenic pollutants, polyvinylpyrrolidone, antibacterial activity

Abstract

Ulaanbaatar, the capital of Mongolia, is dealing with significant water pollution due to rapid urbanization, a dense population, and the widespread use of traditional stoves. With half of Mongolia's population residing in the capital city, the strain on infrastructure results in untreated wastewater entering water bodies, emphasizing the urgent need to reduce pollution for public health and the environment. Our research focuses on utilizing chemical synthesis to prepare silver nanoparticles (Ag NPs) aimed at reducing pathogenic pollutants in river water. We investigated the properties and antibacterial activity of the Ag NPs synthesized through the chemical reduction method of AgNO₃ using NaBH₄, with polyvinylpyrrolidone (PVP) utilized as a stabilizer to prevent agglomeration. Characterization was performed using a variety of analytical techniques, including UV/Vis spectroscopy, X-ray diffraction (XRD), and NANOPhox particle analysis. The borohydride reduction method yielded Ag NPs with an average particle diameter of 53.69 nm. The silver nanoparticle solution exhibited a yellow color, as observed on a UV/Vis spectrophotometer at a wavelength of 389.5 nm. Furthermore, the Ag NPs demonstrated significant antibacterial activity against Salmonella typhimurium (S. typhimurium) and drug-resistant Escherichia coli (E. coli) bacteria.

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