Hydrous ferric oxide nanoparticles hosted porous polyethersulfone adsorptive membrane: chromium (VI) adsorptive studies and its applicability for water/wastewater treatment

Abdullah, Norfadhilatuladha; Shah, Muhammad Hafiz Abu; Ikhsan, Syarifah Nazirah Wan; Ng, Zhi Chien; Maji, Subrata; Lau, Woei Jye; Jaafar, Juhana; Ariga, Katsuhiko

doi:10.1007/s11356-019-05208-9

Cited by 12 publications

(3 citation statements)

References 43 publications

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“…There are several accepted methods for removing Cr(VI), which typically exists as highly soluble and toxic chromate anions (HCrO 4 – or Cr 2 O 7 2– ), from industrial wastewater: photocatalytic reduction, ,− chemical precipitation, electrokinetic remediation, membrane filtration, , and adsorption. − Among these methods, adsorption is especially appealing, as it is very effective at removing Cr(VI) . The adsorption process requires a solid surface (i.e., an adsorbent) with a large surface area for the species to be adsorbed (i.e., an adsorbate) to attach to, either by physical or chemical processes, for which in here, the use of a nanosized material will be beneficial for providing the surface area.…”

Section: Introductionmentioning

confidence: 99%

“…There are several accepted methods for removing Cr(VI), which typically exists as highly soluble and toxic chromate anions (HCrO 4 − or Cr 2 O 7 2− ), from industrial wastewater: photocatalytic reduction, 6,8−10 chemical precipitation, 11 electrokinetic remediation, 12 membrane filtration, 13,14 and adsorption. 15−17 Among these methods, adsorption is especially appealing, as it is very effective at removing Cr(VI).…”

Section: Introductionmentioning

confidence: 99%

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Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water Vapor-Assisted Thermal Oxidation and Their Cr(VI) Adsorption Properties

et al. 2021

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Coral-like and nanowire (NW) iron oxide nanostructures were produced at 700 and 800 °C, respectively, through thermal oxidation of iron foils in air- and water vapor-assisted conditions. Water vapor-assisted thermal oxidation at 800 °C for 2 h resulted in the formation of highly crystalline α-Fe2O3 NWs with good foil surface coverage, and we propose that their formation was due to a stress-driven surface diffusion mechanism. The Cr(VI) adsorption property of an aqueous solution on α-Fe2O3 NWs was also evaluated after a contact time of 90 min. The NWs had a removal efficiency of 97% in a 225 mg/L Cr(VI) solution (pH 2, 25 °C). The kinetic characteristic of the adsorption was fitted to a pseudo-second-order kinetic model, and isothermal studies indicated that the α-Fe2O3 NWs exhibited an adsorption capacity of 66.26 mg/g. We also investigated and postulated a mechanism of the Cr(VI) adsorption in an aqueous solution of α-Fe2O3 NWs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water Vapor-Assisted Thermal Oxidation and Their Cr(VI) Adsorption Properties

et al. 2021

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“…There are several accepted methods for removing Cr(VI), which typically exists as highly soluble and toxic chromate anions (HCrO4or Cr2O7 2-), from industrial wastewater: photocatalytic reduction (Rosli et al 2021;Gao et al 2020;Bashirom et al 2020), chemical precipitation (Xie et al 2017), electrokinetic remediation (Zheng et al 2020), membrane filtration (Abdullah et al 2019), and adsorption (Zhang et al 2020;Rasheed et al 2020). Among these methods, adsorption is especially appealing, as it is very effective at removing even minute amounts of Cr(VI) (Kumar et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water-Vapor-Assisted Thermal Oxidation and their Cr(VI) Adsorption Properties

Budiman

Tan

Kawamura

et al. 2021

Preprint

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In this work, highly crystalline and high aspect ratio α-Fe2O3 nanowire (NWs) were successfully produced by thermal oxidation of iron in water vapor at 800°C. The process was done for 2 h and the NWs were found to be covering the foil uniformly unlike when the oxidation environment was dry whereby the NWs formed were shorted and rather dispersed. The formation of NWs was proposed to be due to a stress-driven surface diffusion during thermal oxidation process. When oxidation was done at 700 oC, we observed coral-like nanostructures. The α-Fe2O3 NWs were then used as adsorbent to remove Cr(VI) from stimulated wastewater. Removal efficiency of 97% in a 225 mg/L Cr(VI) solution was observed indicating very fast removal of Cr(VI) in the presence of the NWs. The kinetic characteristic of the adsorption was fitted to a pseudo-second-order kinetic model, and isothermal studies indicated that the α-Fe2O3 NWs exhibited an adsorption capacity of 66.26 mg/g.

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Membrane Reactor and Moving Bed Biofilm Reactor for Tannery Wastewater Treatment

Raja

Anandkumar²,

Sahariah³

2023

Modern Approaches in Waste Bioremediation

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Hydrous ferric oxide nanoparticles hosted porous polyethersulfone adsorptive membrane: chromium (VI) adsorptive studies and its applicability for water/wastewater treatment

Cited by 12 publications

References 43 publications

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water Vapor-Assisted Thermal Oxidation and Their Cr(VI) Adsorption Properties

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water Vapor-Assisted Thermal Oxidation and Their Cr(VI) Adsorption Properties

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water-Vapor-Assisted Thermal Oxidation and their Cr(VI) Adsorption Properties

Membrane Reactor and Moving Bed Biofilm Reactor for Tannery Wastewater Treatment

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