Implications of Engineered Nanomaterials in Drinking Water Sources

Good, Kelly D.; Bergman, Lauren E.; Klara, Steven S.; Leitch, Megan E.; VanBriesen, Jeanne M.

doi:10.5942/jawwa.2016.108.0013

Cited by 23 publications

(8 citation statements)

References 118 publications

(196 reference statements)

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“…To circumvent this limitation, material flow analysis models have been developed to predict environmental concentrations since 2007 (Boxall et al, 2007). The modeled concentrations of Ag-NPs in surface waters vary significantly, from 0.008 to 619 ng L -1 , depending on modeling parameters and studied sites Good et al, 2016;Gottschalk et al, 2015;Mueller and Nowack, 2008;Musee, 2010;O Brien and Cummins, 2010;Silva et al, 2011;Sun et al, 2016). However, these predictions are currently not validated due to the lack of field measurements in aquatic environments which also limits the further advancement of modeling in other domains, such as their fate and toxicology in complex ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Flow and fate of silver nanoparticles in small French catchments under different land-uses: The first one-year study

et al. 2020

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This study focused on surface waters from three small creeks, within the Seine River watershed, which are characterized by different land-uses, namely forested, agricultural and urban. Silver nanoparticles (Ag-NPs) in these waters were detected and quantified by single-particle ICPMS during one-year of monthly sampling. Their temporal and spatial variations were investigated. Ag-NPs, in the three types of surface water, were found to range from 1.5 x10 7 to 2.3 x 10 9 particles L-1 and from 0.4 to 28.3 ng L-1 at number and mass concentrations, respectively. These values are in consistent with the very few previous studies. In addition, the role of factors driving process and potential sources are discussed with correlations between Ag-NPs concentrations and biogeochemical parameters, like dissolved organic carbon concentration and divalent cations concentrations. For the forested watershed NOM controls the stability (number and mass) of the Ag-NPs as recently observed in the field in lake water in Germany. In the case of the agricultural and urban watersheds major cations such as Ca would control the number and mass of Ag-NPs. Dilution processes are rejected as conductivity and Clions do not show significant correlations with Ag-NPs or other major geochemical parameters. The specific exportation rates of Ag-NPs for artificial, agricultural and forested areas were calculated based on the monthly data for the full year and are equal to 5.5 ± 3.0, 0.5 ± 0.3 and 0.2 ± 0.2 gy-1 km-2 , respectively. These data suggest a constant release of Ag-NPs from consumer products into freshwaters in artificial areas, for instance, from textiles, washing machines, domestic tap-water filters, outdoor paints. These first data of Ag-NPs fluxes in surface waters of France enlarge the very limited database of field measurements. Moreover, for the first time, the influence of time, landuse and aquatic geochemistry parameters on Ag-NPs in real natural water samples is reported. It is also helpful to further understand the fate and the process of Ag-NPs in natural waters, as well as to the ecotoxicity studies in real-world environment.

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Section: Introductionmentioning

confidence: 99%

Flow and fate of silver nanoparticles in small French catchments under different land-uses: The first one-year study

et al. 2020

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“…Different graphene oxide-based 3D structures have been proposed and some of them have already proved superior adsorption capability compared with Granular Activated Carbon (GAC), the industrial standard for some metal ions and organic compounds (Yousefi et al, 2019). Moreover, covalent chemical modification of the oxygen-based functionalities offers a powerful tool to tune the selectivity of GO based structures (Good et al, 2016). Defining the best approach for supporting GO on 3D structures is important to maximize the removal efficacy of the final composite.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional graphene oxide/biopolymer composite aerogels for microcontaminants removal from drinking water

et al. 2020

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Due to water depletion and increasing level of pollution from standard and emerging contaminants, the development of more efficient purification materials and technology for drinking water treatment is a crucial challenge to be addressed in the near future. Graphene oxide (GO) has been pointed as one of the most promising materials to build structure and devices for new adsorbents and filtration systems. Here, we analyzed two types of GO doped 3D chitosan-gelatin aerogels with GO sheets embedded in the bulk or deposited on the surface. Through combined structural characterization and adsorption tests on selected proxies of drinking water micropollutants, we compared both GO-embedded and GO-coated materials and established the best architecture for achieving enhanced removal efficiency toward contaminants in water. To evaluate the best configuration, we studied the adsorption capacity of both systems on two organic molecules (i.e., fluoroquinolonic antibiotics ofloxacin and ciprofloxacin) and a heavy metal (lead Pb 2+) of great environmental relevance and with already proved high affinity for GO. The Pb monolayer maximum adsorption capacity q max was 11.1 mg/g for embedded GO aerogels and 1.5 mg/g in coated GO-ones. Only minor differences were found for organic contaminants between coating and embedding approaches with an adsorption capacity of 5-8 mg/g and no adsorption was found for chitosan-gelatin control aerogels without GO. Finally, potential antimicrobial effects were found particularly for the GO-coated aerogels materials, thus corroborating the multifunctionality of the newly developed porous structures.

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“…Engineered nanomaterials (ENMs) are increasingly incorporated into a variety of products, making human exposure inevitable [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. ENMs are defined as a class of engineered substances with at least one dimension in the range of 1–100 nm [ 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Susceptibility Factors in Chronic Lung Inflammatory Responses to Engineered Nanomaterials

You

Bonner

2020

IJMS

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Engineered nanomaterials (ENMs) are products of the emerging nanotechnology industry and many different types of ENMs have been shown to cause chronic inflammation in the lungs of rodents after inhalation exposure, suggesting a risk to human health. Due to the increasing demand and use of ENMs in a variety of products, a careful evaluation of the risks to human health is urgently needed. An assessment of the immunotoxicity of ENMs should consider susceptibility factors including sex, pre-existing diseases, deficiency of specific genes encoding proteins involved in the innate or adaptive immune response, and co-exposures to other chemicals. This review will address evidence from experimental animal models that highlights some important issues of susceptibility to chronic lung inflammation and systemic immune dysfunction after pulmonary exposure to ENMs.

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Implications of Engineered Nanomaterials in Drinking Water Sources

Abstract: Good et al. | http://dx.

Cited by 23 publications

References 118 publications

Flow and fate of silver nanoparticles in small French catchments under different land-uses: The first one-year study

Flow and fate of silver nanoparticles in small French catchments under different land-uses: The first one-year study

Multifunctional graphene oxide/biopolymer composite aerogels for microcontaminants removal from drinking water

Susceptibility Factors in Chronic Lung Inflammatory Responses to Engineered Nanomaterials

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