Intrinsic properties of cupric oxide nanoparticles enable effective filtration of arsenic from water

McDonald, Kyle J.; Reynolds, Brandon; Reddy, K. J.

doi:10.1038/srep11110

Cited by 47 publications

(30 citation statements)

References 42 publications

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“…values of As(III) and As(V) obtained was less than 1 eV which suggests the oxidation of As(III) to As(V) prior to its adsorption onto NZCO ,. The results obtained are in well accord with report of Yu et al., who explored the use of 3D hierarchial CuO in arsenic remediation and McDonald et al., who studied the intrinsic properties of cupric oxide nanoparticles in arsenic filtration. The schematic of plausible arsenic removal mechanism of NZCO is presented in Figure .…”

Section: Resultsmentioning

confidence: 99%

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

et al. 2019

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Consumption of arsenic contaminated water induces and aggravates major health problems in humans. In this report, we have successfully synthesized nanostructured Zr/Cu composite oxide (NZCO) by ultrasonically assisted hydrothermal process for total arsenic sequestration. Various batch experiments were performed with NZCO to determine its adsorption efficacy for As(III) and As(V) species. NZCO demonstrated outstanding performance in removing arsenic species from water with maximum adsorption capacities of 72.25 mg g−1 and 107.5 mg g−1 for As (III) and As (V) respectively under optimized conditions. The adsorption kinetics was closely fitted to pseudo‐second order model and adsorption isotherms were well described by D−R isotherms model. Meanwhile, the adsorption tests performed on naturally occurring ground water samples confirmed the effectiveness of NZCO in remediating total arsenic level below the prescribed limit of WHO‐MCL (0.01 mg L−1). The adsorption mechanisms study exhibits a single‐step arsenic treatment option involving electrostatic interaction and ligand exchange reactions. Various analytical techniques were used to characterize the material. Facile synthesis route combined with excellent performance make NZCO a novel adsorbent in total arsenic removal from drinking water.

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Section: Resultsmentioning

confidence: 99%

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

et al. 2019

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“…Moreover, As(III) adsorption to CuO NPs showed greater dependence on pH (6–11) and ranged from 62 to 83%, whereas As(V) was relatively independent of pH in the range and consistent from 90 to 97%. In addition, As(III) can be oxidized into As(V) when sorbed to the surface of CuO NPs . Nevertheless, compared with conventional adsorbents, the sorption capacity of CuO NPs allows it to be used effectively without adjusting the pH or oxidizing As(III) into As(V).…”

Section: Environmental Behavior Of Cuo Nps and Asmentioning

confidence: 99%

“…In addition, As collected during the regeneration process of CuO NPs can be reused in the industry. The water chemistry, such as pH, major elements, and trace elements including Cu, of the treated water was seldom affected by the regeneration process of CuO NPs .…”

Section: Environmental Behavior Of Cuo Nps and Asmentioning

confidence: 99%

Environmental behavior, potential phytotoxicity, and accumulation of copper oxide nanoparticles and arsenic in rice plants

Liu¹,

Dhungana²,

Cobb³

2017

Enviro Toxic and Chemistry

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Copper oxide nanoparticles (CuO NPs) are widely used in many industries. The increasing release of CuO NPs from both intentional and unintentional sources into the environment may pose risks to rice plants, thereby reducing the quality or quantity of this staple grain in the human diet. Not only has arsenic (As) contamination decreased rice yield, but As accumulation in rice has also been a great human health concern for a few decades. New technologies have succeeded in removing As from water by nanomaterials. By all accounts, few studies have addressed CuO NP phytotoxicity to rice, and the interactions of CuO NPs with As are poorly described. The present study 1) reviews studies about the environmental behavior and phytotoxicity of CuO NPs and As and research about the interaction of CuO NPs with As in the environment, 2) discusses critically the potential mechanisms of CuO NP and As toxicity in plants and their interaction, and 3) proposes future research directions for solving the As problem in rice. Environ Toxicol Chem 2018;37:11-20. C 2017 SETAC

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“…[40][41][42] Among them CuO attracts major attention as dopents and its effectiveness in removing As from drinking water is a major focus as CuO and Cu(OH) 2 based adsorption sites have strong affinity towards arsenate. [43][44][45][46] It has been shown that CuO and encapsulating chitosan matrix adsorb arsenic by means of electrostatic attraction under controlled pH environment. Also, no significant interference by other anions present in water has also been reported for As(V) adsorption process by CuO-ZnO.…”

Section: Introductionmentioning

confidence: 99%

Carbon‐Based Adsorbents from Naturally Available Bermuda Grasses: Removal of TDS and Arsenic Ions

et al. 2020

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In the present study, we have reported the synthesis of nano porous carbon material (GC) by the thermal treatment of the commonly available Bermuda grasses, and metal oxides doped bio-compatible polymer chitosan-GC based porous cross-linked composites (CHGCCZ) as adsorbent materials for the removal of total dissolved solids (TDS) and efficient removal of arsenic (As(V)) ions from aqueous medium, respectively. The synthesized adsorbents have been characterized by FTIR, PXRD, FESEM, TGA, and the systematic investigations have shown that the incorporation of GCs into cross-linked matrix makes them porous, more resistant to degradation, and suitable adsorption matrix for the toxic As(V) removal. The presence of As(V) ions is quantified by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) measurements. The amount of TDS and arsenic concentration was reduced to the minimum value of 103 ppm (average value ∼ 119 ppm) from 414 ppm and 7.7 ppm from very high concentration of 10.15 ppm, respectively. The recyclability test has also been performed after regeneration of the CHGCCZ and the initial findings has been found to be promising. Therefore, we have systematically investigated the efficacy of TDS removal by GCs and As(V) adsorption properties of metal oxide doped cross-linked CHGCCZ composite from the aqueous system and demonstrated the regeneration process for CHGCCZ in our study.

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Intrinsic properties of cupric oxide nanoparticles enable effective filtration of arsenic from water

Cited by 47 publications

References 42 publications

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

Exploring Nanostructured Zr/Cu Composite Oxide (NZCO) as an Efficient Adsorbent for Removal of As(III) and As(V) from Aqueous Solution

Environmental behavior, potential phytotoxicity, and accumulation of copper oxide nanoparticles and arsenic in rice plants

Carbon‐Based Adsorbents from Naturally Available Bermuda Grasses: Removal of TDS and Arsenic Ions

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