Engineered nanomaterials for water treatment and remediation: Costs, benefits, and applicability

Adeleye, Adeyemi S.; Conway, Jon R.; Garner, Kendra L.; Huang, Yuxiong; Su, Yiming; Keller, Arturo A.

doi:10.1016/j.cej.2015.10.105

Cited by 690 publications

(251 citation statements)

References 510 publications

(362 reference statements)

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“…[15][16][17] In a recent study, 10 we reported the synthesis and proof-of-concept of a magnetic nanoparticle sorbent, namely Mag-Ligand, which is structured as a magnetic nano-scale core coated with a silica porous layer that covalently bonds with an organic ligand, ethylenediaminetetraacetic acid (EDTA). The interactions between metal ions and Mag-Ligand are a combination of complexation reactions, adsorption onto porous structures and electrostatic interactions (Fig.…”

Section: -14mentioning

confidence: 99%

Isothermal titration microcalorimetry to determine the thermodynamics of metal ion removal by magnetic nanoparticle sorbents

Huang

Keller

2016

Environ. Sci.: Nano

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Section: -14mentioning

confidence: 99%

Isothermal titration microcalorimetry to determine the thermodynamics of metal ion removal by magnetic nanoparticle sorbents

Huang

Keller

2016

Environ. Sci.: Nano

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“…10 Magnetic core hybrid nanoparticle adsorbents have shown promise for application in water decontamination owing to their large surface area, and high ratio of surface-tovolume. 1,8,[11][12][13] With the superparamagnetic feature, these nanoparticle sorbents could be extracted and recycled from wastewater system by applying an external magnetic field. 13,14 In previous studies, we synthesized magnetic permanently confined micelle arrays (Mag-PCMAs) with a maghemite core and a silica porous layer that permanently confines cationic surfactant micelles within the mesopores, and had been successfully applied to remove hydrophobic compounds, 14 pesticides, 15 natural organic matter, 16 oxyanions 17 and emerging organic contaminants.…”

Section: Introductionmentioning

confidence: 99%

“…3,4 Current treatment options for the removal of EOCs from aquatic systems typically include advanced oxidation processes 5 and membrane technologies, 6 since conventional water treatment processes do not provide a high removal efficiency of many EOCs. [7][8][9] However, the major drawback of utilizing these advanced treatment processes is the high level of energy consumption and cost. 10 Magnetic core hybrid nanoparticle adsorbents have shown promise for application in water decontamination owing to their large surface area, and high ratio of surface-tovolume.…”

Section: Introductionmentioning

confidence: 99%

Optimization of porous structure of superparamagnetic nanoparticle adsorbents for higher and faster removal of emerging organic contaminants and PAHs

Huang

Fulton

Keller

2016

Environ. Sci.: Water Res. Technol.

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a Superparamagnetic permanently confined micelle array (Mag-PCMAs) nanoparticle adsorbents have been successfully synthesized with a core/shell structure of a silica/surfactant mesostructured hybrid layer on negatively charged maghemite nanoparticles. A micelle swelling agent, 1,3,5-trimethyl benzene, was introduced during the synthesis and removed afterward to optimize the porous structure of Mag-PCMAs to achieve larger surface area and higher pore volume. The isotherms and kinetics of three representative EOCs (methyl orange, sulfamethoxazole and gemfibrozil) and two PAHs (acenaphthene and phenanthrene) onto Mag-PCMAs were determined, and the regeneration and reusability of Mag-PCMAs for methyl orange removal was also investigated. With the optimization of porous structure, the sorption kinetics and capacities of EOCs and PAHs were significantly improved. All of the results showed that Mag-PCMAs can provide fast, effective and sustainable approach for EOCs and PAHs remediation.

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“…The major cause behind these shall be specified to unawareness about personal hygiene practices and poor sanitation facility. For disinfection of these, composite nanoparticles assisted photocatalysis can have a good potential for field application [2]. Currently, the simplicity and cost-effectiveness of sun-light assisted photocatalysis by using metal/metal oxide nanoparticles is gaining much attention for water treatment applications [3].…”

Section: Introductionmentioning

confidence: 99%

Disinfection of Water Borne Pathogens <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> by Solar Photocatalysis using Sonochemically Synthesized Reusable Ag@ZnO Core-shell Nanoparticles

Das¹,

Ranjana²,

Misra³

et al. 2017

Preprint

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Abstract:Water borne pathogens present a threat to human health and their disinfection from water poses a challenge, prompting search for newer methods and newer materials. Disinfection of Gram-negative bacterium Escherichia coli and Gram-positive coccal bacterium Staphylococcus aureus in aqueous matrix was achieved within 60 and 90 minutes respectively at 35⁰C using solarphotocatalysis mediated by sonochemically synthesized Ag@ZnO core-shell nanoparticles. The efficiency of the process increased with increase in temperature and at 55⁰C the disinfection could be achieved in 45 and 60 min respectively for the two bacteria. A new ultrasound assisted chemical precipitation technique was used for the synthesis of Ag@ZnO core-shell nanoparticles. The characteristics of the synthesized material were established using physical techniques. The material remained stable even at 400 o C. Disinfection efficiency of the Ag@ZnO core-shell nanoparticles was confirmed in case of real world water samples from pond, river, municipal tap and was found to be better than that of pure ZnO and TiO2 (Degussa P25). When the nanoparticle based catalyst was recycled and reused for subsequent disinfection experiments, its efficiency did not change remarkably even after three cycles. The sonochemically synthesized Ag@ZnO core-shell nanoparticles have a good potential for application in solar photocatalytic disinfection of water borne pathogens.

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Engineered nanomaterials for water treatment and remediation: Costs, benefits, and applicability

Cited by 690 publications

References 510 publications

Isothermal titration microcalorimetry to determine the thermodynamics of metal ion removal by magnetic nanoparticle sorbents

Isothermal titration microcalorimetry to determine the thermodynamics of metal ion removal by magnetic nanoparticle sorbents

Optimization of porous structure of superparamagnetic nanoparticle adsorbents for higher and faster removal of emerging organic contaminants and PAHs

Disinfection of Water Borne Pathogens <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> by Solar Photocatalysis using Sonochemically Synthesized Reusable Ag@ZnO Core-shell Nanoparticles

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