Fate and removal of silver nanoparticles during sludge conditioning and their impact on soil health after simulated land application

Abdulsada, Zainab; Kibbee, Richard; Schwertfeger, Dina; Princz, Juliska; DeRosa, Maria C.; Örmeci, Banu

doi:10.1016/j.watres.2021.117757

Cited by 8 publications

(2 citation statements)

References 36 publications

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“…Ag-NPs have already been successfully applied in various biomedical and antimicrobial technologies and products used in everyday life [ 55 ]. However, the Ag accumulation in the human body and environments showed toxic effects when it deposits to a certain amount [ 56 , 57 ]. Bacteria can also develop resistance to silver nanoparticles after repeated exposure [ 58 ].…”

Section: Discussionmentioning

confidence: 99%

In vitro magnetosome remineralization for silver-magnetite hybrid magnetosome biosynthesis and used for healing of the infected wound

Zhang

et al. 2022

J Nanobiotechnol

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Background Magnetosomes (BMPs) are organelles of magnetotactic bacteria (MTB) that are responsible for mineralizing iron to form magnetite. In addition, BMP is an ideal biomaterial that is widely used in bio- and nano-technological applications, such as drug delivery, tumor detection and therapy, and immunodetection. The use of BMPs to create multifunctional nanocomposites would further expand the range of their applications. Results In this study, we firstly demonstrate that the extracted BMP can remineralize in vitro when it is exposed to AgNO3 solution, the silver ions (Ag+) were transported into the BMP biomembrane (MM) and mineralized into a silver crystal on one crystal plane of Fe3O4. Resulting in the rapid synthesis of an Ag-Fe3O4 hybrid BMP (BMP-Ag). The synergy between the biomembrane, Fe3O4 crystal, and unmineralized iron enabled the remineralization of BMPs at an Ag+ concentration ≥ 1.0 mg mL−1. The BMP-Ag displayed good biocompatibility and antibacterial activity. At a concentration of 2.0 mg/mL, the BMP-Ag and biomembrane removed Ag-Fe3O4 NPs inhibited the growth of gram-negative and gram-positive bacteria. Thus using BMP-Ag as a wound dressing can effectively enhance the contraction of infected wounds. Conclusions This study represents the first successful attempt to remineralize organelles ex vivo, realizing the biosynthesis of hybrid BMP and providing an important advancement in the synthesis technology of multifunctional biological nanocomposites. Graphical abstract

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Section: Discussionmentioning

confidence: 99%

In vitro magnetosome remineralization for silver-magnetite hybrid magnetosome biosynthesis and used for healing of the infected wound

Zhang

et al. 2022

J Nanobiotechnol

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“…Silver NP are found in clothes, water filters, antifouling membranes, medical devices, biosensors, and nano-pesticides [ 3 , 4 , 5 ]. From these products, some AgNP are released into wastewater, which eventually arrives at wastewater treatment plants (WWTP) [ 6 , 7 ] and is subsequently applied to agricultural soils via the application of contaminated biosolids [ 8 ]. In the case of Ag-based nano-pesticides, NP are directly released into the environment through their application to agricultural fields.…”

Section: Introductionmentioning

confidence: 99%

Effects of Multiple Stressors, Pristine or Sulfidized Silver Nanomaterials, and a Pathogen on a Model Soil Nematode Caenorhabditis elegans

Cochran,

Ngy,

Unrine

et al. 2024

Nanomaterials

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Previous research using the model soil nematode Caenorhabditis elegans has revealed that silver nanoparticles (AgNP) and their transformed counterpart, sulfidized AgNP (sAgNP), reduce their reproduction and survival. To expand our understanding of the environmental consequences of released NP, we examined the synergistic/antagonistic effects of AgNP and sAgNP along with AgNO3 (ionic control) on C. elegans infected with the pathogen Klebsiella pneumoniae. Individual exposures to each stressor significantly decreased nematode reproduction compared to controls. Combined exposures to equitoxic EC30 concentrations of two stressors, Ag in nanoparticulate (AgNP or sAgNP) or ionic form and the pathogen K. pneumoniae, showed a decline in the reproduction that was not significantly different compared to individual exposures of each of the stressors. The lack of enhanced toxicity after simultaneous combined exposure is partially due to Ag decreasing K. pneumoniae pathogenicity by inhibiting biofilm production outside the nematode and significantly reducing viable pathogens inside the host. Taken together, our results indicate that by hindering the ability of K. pneumoniae to colonize the nematode’s intestine, Ag reduces K. pneumoniae pathogenicity regardless of Ag form. These results differ from our previous research where simultaneous exposure to zinc oxide (ZnO) NP and K. pneumoniae led to a reproduction level that was not significantly different from the controls.

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Biological toxicity, safety issues, and environmental hazards associated with silver nanoparticles

Velasco-Ramírez,

Ramírez-Anguiano,

Minjarez-Ibañez

et al. 2024

Silver Nanoparticles for Drug Delivery

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Fate and removal of silver nanoparticles during sludge conditioning and their impact on soil health after simulated land application

Cited by 8 publications

References 36 publications

In vitro magnetosome remineralization for silver-magnetite hybrid magnetosome biosynthesis and used for healing of the infected wound

In vitro magnetosome remineralization for silver-magnetite hybrid magnetosome biosynthesis and used for healing of the infected wound

Effects of Multiple Stressors, Pristine or Sulfidized Silver Nanomaterials, and a Pathogen on a Model Soil Nematode Caenorhabditis elegans

Biological toxicity, safety issues, and environmental hazards associated with silver nanoparticles

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