Removal of Arsenic(III) from Aqueous Solution Using Metal Organic Framework-Graphene Oxide Nanocomposite

Chowdhury, Tonoy; Zhang, Lei; Zhang, Junqing; Aggarwal, Srijan

doi:10.3390/nano8121062

Cited by 67 publications

(26 citation statements)

References 67 publications

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“…They include coagulation, precipitation, adsorption, membrane filtration, electrochemical techniques and ozonation [10]. Among these, adsorption is the most widely employed, due to its high efficiency, non-toxicity, readily available adsorbents, low cost, ease of recovery and environmental sustainability [11][12][13]. Applicability largely depends on the cost and efficiency of adsorbent.…”

Section: Methodsmentioning

confidence: 99%

Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent

et al. 2020

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Alizarin red S (ARS) removal from wastewater using sheep wool as adsorbent was investigated. The influence of contact time, pH, adsorbent dosage, initial ARS concentration and temperature was studied. Optimum values were: pH = 2.0, contact time = 90 min, adsorbent dosage = 8.0 g/L. Removal of ARS under these conditions was 93.2%. Adsorption data at 25.0 °C and 90 min contact time were fitted to the Freundlich and Langmuir isotherms. R2 values were 0.9943 and 0.9662, respectively. Raising the temperature to 50.0 °C had no effect on ARS removal. Free wool and wool loaded with ARS were characterized by Fourier Transform Infrared Spectroscopy (FTIR). ARS loaded wool was used as adsorbent for removal of Cr(VI) from industrial wastewater. ARS adsorbed on wool underwent oxidation, accompanied by a simultaneous reduction of Cr(VI) to Cr(III). The results hold promise for wool as adsorbent of organic pollutants from wastewater, in addition to substantial self-regeneration through reduction of toxic Cr(VI) to Cr(III). Sequential batch reactor studies involving three cycles showed no significant decline in removal efficiencies of both chromium and ARS.

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Section: Methodsmentioning

confidence: 99%

Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent

et al. 2020

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“…In another work, to remove arsenite (As III ), MIL‐53(Al)‐graphene oxide (GO) nanocomposites of different GO to MIL‐53(Al) mass ratios (1 to 25% GO) were chose because this MOF exhibits low density and high surface area, and more importantly, it is highly stable and resistant to hydrolysis in aqueous solutions . XRD patterns of MIL‐53(Al)‐GO nanocomposites were similar to the pure framework.…”

Section: Adsorption Of One Metal Ionmentioning

confidence: 99%

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

2020

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The efficient adsorption of heavy metal ions from wastewater has become a serious challenge from both environmental and biological viewpoints. Recently, porous metal‐organic frameworks (MOFs), with metallic clusters and organic linkers, have been developed as promising structures in the capture of different toxic and hazardous substances, including heavy metal ions, because of their unique features. Here there is a collection for recent progress in the field of water remediation from the variable‐valent metals in polluted water and the corresponding MOFs which are able to remove these pollutant agents from water. Meanwhile, effective factors in the absorption of metal ions are discussed. MOFs are considered to be a promising candidate for metal ions removal from wastewater.

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“…Several adsorbents such as zeolite [ 12 ], activated carbon (AC) [ 13 ], and silica gel [ 14 ] are used for the removal of heavy metals from an aqueous solution that are not as efficient as metal organic frameworks (MOFs) due to their low adsorption capacities and surface area [ 15 ]. Recently, researchers studied nanomaterials and found that they exhibit superior properties and show potential for increasing the adsorption of heavy metals in contrast to traditional adsorbents [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Lead Ions by a Green AC/HKUST-1 Nanocomposite

2020

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A new nanocomposite consisting of activated carbon (AC) from the Cortaderia selloana flower and copper-based metal-organic framework (HKUST-1) was synthesized through a single-step solvothermal method and applied for the removal of lead ions from aqueous solution through adsorption. The nanocomposite, AC/HKUST-1, was characterized by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR), and Energy-Dispersive X-ray Spectroscopy (EDX) methods. The SEM images of both HKUST-1 and AC/HKUST-1 contain octahedral crystals. Different factors affecting adsorption processes, such as solution pH, contact time, adsorbent dose, and initial metal pollution concentration, were studied. The adsorption isotherm was evaluated with Freundlich and Langmuir models, and the latter was fitted with the experimental data on adsorption of lead ion. The adsorption capacity was 249.4 mg g−1 for 15 min at pH 6.1, which is an excellent result rivalling previously reported lead adsorbents considering the conditions. These nanocomposites show considerable potential for use as a functional material in the ink formulation of lead sensors.

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Removal of Arsenic(III) from Aqueous Solution Using Metal Organic Framework-Graphene Oxide Nanocomposite

Cited by 67 publications

References 67 publications

Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent

Cyclic Sequential Removal of Alizarin Red S Dye and Cr(VI) Ions Using Wool as a Low-Cost Adsorbent

Recent Progress in the Removal of Heavy Metal Ions from Water Using Metal‐Organic Frameworks

Adsorption of Lead Ions by a Green AC/HKUST-1 Nanocomposite

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