Impact of synthetic silver nanoparticles on the biofilm microbial communities and wastewater treatment efficiency in experimental hybrid filter system treating municipal wastewater

Truu, Marika; Ligi, Teele; Nõlvak, Hiie; Peeb, Angela; Tiirik, Kertu; Devarajan, Arun Kumar; Oopkaup, Kristjan; Kasemets, Kaja; Kõiv-Vainik, Margit; Kasak, Kuno; Truu, Jaak

doi:10.1016/j.jhazmat.2022.129721

Cited by 9 publications

(1 citation statement)

References 90 publications

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“…Quantitative PCR was used to assess the amount of ARGs. The findings indicated that heightened concentrations of AgNPs and Ag + ions only moderately altered the prokaryotic community structure in the biofilms of the filter material and did not substantially affect the system's overall purification capability [2]. The addition of AgNO 3 caused an increase in the genetic mechanisms responsible for silver resistance in microbial communities in the vertical flow filters compared to the collargol, suggesting that the microbial communities in these biofilms can resist or adapt to the presence of silver nanoparticles.…”

mentioning

confidence: 96%

Silver Nanoparticles May Promote Antibiotic Resistance Gene Persistence in Wastewater Treatment Systems

Truu,

Ligi,

Nõlvak

et al. 2023

International Conference EcoBalt 2023 "Chemicals &Amp;amp; Environment"

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mentioning

confidence: 96%

Silver Nanoparticles May Promote Antibiotic Resistance Gene Persistence in Wastewater Treatment Systems

Truu,

Ligi,

Nõlvak

et al. 2023

International Conference EcoBalt 2023 "Chemicals &Amp;amp; Environment"

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Role of Silver Nanoparticles on Wastewater Treatment, Environmental Implications, and Challenges

Sinha

Shrivastava

Chaubey

et al. 2023

Smart Nanomaterials Technology

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Water disinfection using durable ceramic filter coated with silver nanoparticles synthesized using actinomycetes

Wafy,

El-Aswar,

Mohamed

et al. 2023

Appl Water Sci

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Contamination with pathogens degrades water quality and is a major cause of many waterborne diseases. The aim of this research is to reduce the global disease burden by presenting an efficient, durable, and low-cost ceramic filter impregnated with actinomycetes-mediated silver nanoparticles (AgNPs) for water disinfection in rural areas. This marks the first report on the simultaneous biosynthesis of AgNPs utilizing cell-free supernatants obtained from terrestrial actinomycetes. An easy and efficient method was used to impregnate AgNPs onto a ceramic filter using 3-aminopropyltriethoxysilane (APTES). The APTES linker is anchored to the ceramic surface through Si–O–Si bridges, while the terminal amino groups coordinate with AgNPs. Notably, the observed inhibition zone around the filter with AgNPs was ~ 18 mm, suggesting that the silver ions were responsible for the antibacterial activity. After 30 min of sonication, only insignificant traces of AgNPs were released from the filter, making it stable for long-term antibacterial activity when treating water. According to the laboratory simulation experiments, the untreated filter can reject about 99% of spiked bacteria, while the antibacterial efficiency of the filter coated with AgNPs was 100% due to the synergistic effect between filtration and disinfection with AgNPs. In addition, the average concentration of dissolved silver in the outlet water of the ultrafiltration system during three months was 33.7 μg/L, far below the permissible limit (100 μg/L) for drinking water. Overall, this work offers a suitable and affordable water treatment strategy for low-income, isolated, and rural societies in developing countries.

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Impact of synthetic silver nanoparticles on the biofilm microbial communities and wastewater treatment efficiency in experimental hybrid filter system treating municipal wastewater

Cited by 9 publications

References 90 publications

Silver Nanoparticles May Promote Antibiotic Resistance Gene Persistence in Wastewater Treatment Systems

Silver Nanoparticles May Promote Antibiotic Resistance Gene Persistence in Wastewater Treatment Systems

Role of Silver Nanoparticles on Wastewater Treatment, Environmental Implications, and Challenges

Water disinfection using durable ceramic filter coated with silver nanoparticles synthesized using actinomycetes

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