Modification of ceramic membranes with inorganic sorbents. Application to electrodialytic recovery of Cr(VI) anions from multicomponent solution

Dzyazko, Yuliya; Rudenko, Aleksandra; Yukhin, Yu. M.; Palchik, A.V.; Belyakov, V. N.

doi:10.1016/j.desal.2013.12.019

Cited by 33 publications

(20 citation statements)

References 33 publications

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“…Hence 17 effluents from these industry are the major source of Cr(VI) pollution. 18 Several methods have been developed to remove Cr(VI) from water 19 such as liquid extraction [7], chemical precipitation [8], electrodial-20 ysis [9], photocatalysis [10] and membrane filtration [11,12]. 21 However, these methods have several disadvantages including the 22 requirement of large amounts of organic solvent, high cost and far 23 from ideal for technical application.…”

Section: Introductionmentioning

confidence: 99%

A novel pyridinium functionalized magnetic chitosan with pH-independent and rapid adsorption kinetics for magnetic separation of Cr(VI)

Sakti

Narita

Sasaki

et al. 2015

Journal of Environmental Chemical Engineering

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Section: Introductionmentioning

confidence: 99%

A novel pyridinium functionalized magnetic chitosan with pH-independent and rapid adsorption kinetics for magnetic separation of Cr(VI)

Sakti

Narita

Sasaki

et al. 2015

Journal of Environmental Chemical Engineering

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“…However, low-pressure-driven membranes are not effective at removing ionic contaminants such as heavy metals [4], and thus many physicochemical strategies have been proposed to increase their ionic removal efficiency. The deposition of nanoscale inorganic adsorbents such as iron oxide and zirconium dioxide on ceramic membrane pores is the most common modification method [5][6][7], with coating the top layer with different types of polymers such as chitosan and cellulose acetate over the ceramic support being an alternative [8,9]. The development of hybrid processes combining ceramic membranes with ozone or ion-exchange processes has also been reported [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Ion-Exchange Fabric/Ceramic Membrane System to Remove As(V), Zn(II), and Turbidity from Wastewater

et al. 2020

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Ceramic membranes and ion exchangers are effective at removing turbidity and ionic contaminants from water, respectively. In this study, we demonstrate the performance of a hybrid ion-exchange fabric/ceramic membrane system to treat metal ions and turbidity at the same time in synthetic wastewater. The removal rate of As(V) and Zn(II) by the ceramic membrane increased with solution pH, while turbidity was completely removed regardless of the solution pH. The main reaction of As(V) removal was adsorption at solution pH 6 and precipitation at solution pH 8, whereas phase-change was the predominant reaction for Zn(II) removal at both solution pH values. The removal efficiency of the ion-exchange fabric was affected by the solution pH, with the maximum removal capacity of As(V) occurring at solution pH 4. The As(V) adsorption capacity of the ion-exchange fabric reached equilibrium within 120 min. The ion-exchange capacity of the ion-exchange fabric was compared with commercial ion-exchange fibers. The regeneration efficiency of the ion-exchange fabric using 0.1 M NaCl solution was around 95% on average and decreased slightly as the number of regeneration cycles was increased. Over 80% of As(V) and Zn(II) were steadily removed at solution pH 6 by the hybrid ion-exchange fabric/ceramic membrane system. Reduced flow rate and removal capacity were recovered through a backwashing process during continuous treatment with the hybrid ion-exchange fabric/ceramic membrane system.

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“…Various techniques were developed for the separation and removal of Cr(VI) from aqueous media including electrodialysis [8], membrane separation [9], chemical reduction/precipitation [10], ion exchange [11] and adsorption [12]. However, there are some disadvantages associated with precipitation and the most prominent is the large consumption of reagents [13].…”

Section: Introductionmentioning

confidence: 99%

Removal of hexavalent chromium from aqueous solutions using Ni–SiO$$_{2}$$ nanomaterials

et al. 2019

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This study describes an effective method developed for the removal of hexavalent chromium, Cr(VI), from an aqueous environment. In this study, the Ni-SiO 2 nanomaterial was synthesized by the sol-gel method and then characterized by field emission scanning electron microscopy, X-ray diffraction and energy dispersive X-ray spectroscopy. The prepared nanomaterial was then employed as an adsorbent with significant properties of high surface area and uptake capacity. Adsorption conditions of Cr(VI) onto the Ni-SiO 2 nanomaterial were optimized by altering different parameters (pH, initial Cr(VI) concentration and different periods of time). An amount of 100.75 mg g −1 was estimated as the maximum uptake capacity of the Ni-SiO 2 nanomaterial at pH 4.0. The experimental data of Cr(VI) adsorption onto the Ni-SiO 2 nanomaterial were fitted well to the Langmuir isotherm and pseudo second-order kinetic models. Moreover, the adsorption of Cr(VI) onto the Ni-SiO 2 nanomaterial was not influenced even in the presence of different coexisting ions. Finally, the recommended methodology was applied on several environmental water samples.

show abstract

Modification of ceramic membranes with inorganic sorbents. Application to electrodialytic recovery of Cr(VI) anions from multicomponent solution

Cited by 33 publications

References 33 publications

A novel pyridinium functionalized magnetic chitosan with pH-independent and rapid adsorption kinetics for magnetic separation of Cr(VI)

A novel pyridinium functionalized magnetic chitosan with pH-independent and rapid adsorption kinetics for magnetic separation of Cr(VI)

A Hybrid Ion-Exchange Fabric/Ceramic Membrane System to Remove As(V), Zn(II), and Turbidity from Wastewater

Removal of hexavalent chromium from aqueous solutions using Ni–SiO$$_{2}$$ nanomaterials

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