Recovery of trivalent and hexavalent chromium from chromium slag using a bipolar membrane system combined with oxidation

Liu, Yaoxing; Ding, Jianguo; Han-quan, Zhu; Wu, Xiaofeng; Dai, Liping; Chen, Riyao; Bruggen, Bart Van der

doi:10.1016/j.jcis.2022.03.140

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…By exploiting the selective nature of ion exchange membranes, anion and cation exchange membranes can be adapted for various applications. Commercially available ion exchange membranes are primarily found in water treatment applications such as desalination or high-purity water production in food and beverage, as well as in pharmaceuticals, semiconductors, power generation, fuel cells, electrodialysis, Donnan analysis, electrolysis and many more [4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Hybrid polymer inclusion membrane as anion exchange membrane for recovering Pd2+ ions in electrogenerative process

Yaacob

Mansor

Nizar

et al. 2022

J. Electrochem. Sci. Eng.

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A novel non-plasticized nano-porous hybrid inorganic-organic polymer inclusion membrane (PIM) was synthesized, characterized, and evaluated as an anion exchange membrane for application in electrogenerative processes to recover Pd2+ ions. Ionic liquids 1-ethyl-3-methylimidazolium chloride (EMIM-Cl) and 1-butyl-3-methylimidazolium chloride (BMIM-Cl) were used as the carrier molecules in the polymeric network of PIM to enhance anion exchange process. This hybrid anion exchange membrane also consists of a polymeric matrix of non-plasticized cellulose triacetate modified by incorporating an inorganic material (silane) prepared by the sol-gel route. Different parameters affecting the ion transport performance efficiency, i.e., the composition of the membrane, type of ionic liquid (carrier molecule) and ion–exchange capacity, were investigated and optimized. In the electrogenerative process, the results revealed that the prepared PIM yields better recovery results for recovering Pd2+ ions from its chloride solution compared to the commercial anion exchange membrane Neosepta® AM-01, with a full recovery of 100 mg/L Pd2+ ions in 30 min. This preliminary study shows that the prepared low-cost hybrid anion exchange membrane PIM can act as an inexpensive material suitable for the rapid and efficient recovery of Pd2+ ions from an aqueous solution.

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Section: Introductionmentioning

confidence: 99%

Hybrid polymer inclusion membrane as anion exchange membrane for recovering Pd2+ ions in electrogenerative process

Yaacob

Mansor

Nizar

et al. 2022

J. Electrochem. Sci. Eng.

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“…By introducing 2D Ti 3 C 2 T x with high affinity with PmPD, we hoped to optimize the morphology and structure of MF/Ti 3 C 2 T x /PmPD, to give full play to the nanoscale advantages of PmPD [28]. Cr(VI) is a heavy metal that seriously threatens human health and ecological environment [29][30][31]. Therefore, MF/Ti 3 C 2 T x /PmPD was applied to the treatment of Cr(VI) in this paper, and the adsorption process was explored in detail.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Three-Dimensional MF/Ti3C2Tx/PmPD by Interfacial Polymerization for Efficient Hexavalent Chromium Removal

Jin

Pan

et al. 2022

Nanomaterials

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Heavy metal pollution is a serious threat to human health and the ecological environment, but adsorption technology based on nano adsorbents can effectively treat the crisis. However, due to the nanoscale effect, nano adsorbents have some crucial shortcomings, such as recycling difficulty and the loss of nanoparticles, which seriously limit their application. The feasible assembly of nano adsorbents is an accessible technology in urgent need of a breakthrough. In this study, three-dimensional (3D) adsorbent (MF/Ti3C2Tx/PmPD) with excellent performance and favorable recyclability was prepared by interfacial polymerization with melamine foam (MF) as the framework, two-dimensional (2D) titanium carbide (Ti3C2Tx) as the bridge and Poly (m-Phenylenediamine) (PmPD) as the active nano component. The morphology, structure, mechanical property of MF/Ti3C2Tx/PmPD and reference MF/PmPD were investigated through a scanning electron microscope (SEM), Fourier transformed infrared spectra (FT-IR), Raman scattering spectra and a pressure-stress test, respectively. Owning to the regulation of Ti3C2Tx on the morphology and structure of PmPD, MF/Ti3C2Tx/PmPD showed excellent adsorption capacity (352.15 mg/g) and favorable cycling performance. R–P and pseudo-second-order kinetics models could well describe the adsorption phenomenon, indicating that the adsorption process involved a composite process of single-layer and multi-layer adsorption and was dominated by chemical adsorption. In this research, the preparation mechanism of MF/Ti3C2Tx/PmPD and the adsorption process of Cr(VI) were systematically investigated, which provided a feasible approach for the feasible assembly and application of nano adsorbents in the environmental field.

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“…This is primarily caused by the following two reasons. First, the CEM has a large number of anionic functional groups[21], which absorbed part of NH 4 + ; second, when the pH is high, the equilibrium reaction of Equation(10) occurs in the AWC, and some NH 4+ is eliminated as NH 3 as a result. This could slow down the rate at which NH 4 + builds up in the WWC.…”

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confidence: 99%

Separation and Concentration of Nitrogen and Phosphorus in a Bipolar Membrane Electrodialysis System

Wu¹,

Cai²,

Fu³

et al. 2022

Membranes

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Struvite crystallization is a successful technique for simultaneously recovering PO43− and NH4+ from wastewater. However, recovering PO43− and NH4+ from low-concentration solutions is challenging. In this study, PO43−, NH4+, and NO3− were separated and concentrated from wastewater using bipolar membrane electrodialysis, PO43− and NH4+ can then be recovered as struvite. The separation and concentration of PO43− and NH4+ are clearly impacted by current density, according to experimental findings. The extent of separation and migration rate increased with increasing current density. The chemical oxygen demand of the feedwater has no discernible impact on the separation and recovery of ions. The migration of PO43−, NH4+, and NO3− fits zero-order migration kinetics. The concentrated concentration of NH4+ and PO43− reached 805 mg/L and 339 mg/L, respectively, which demonstrates that BMED is capable of effectively concentrating and separating PO43− and NH4+. Therefore, BMED can be considered as a pretreatment method for recovering PO43− and NH4+ in the form of struvite from wastewater.

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Recovery of trivalent and hexavalent chromium from chromium slag using a bipolar membrane system combined with oxidation

Cited by 10 publications

References 27 publications

Hybrid polymer inclusion membrane as anion exchange membrane for recovering Pd2+ ions in electrogenerative process

Hybrid polymer inclusion membrane as anion exchange membrane for recovering Pd2+ ions in electrogenerative process

Preparation of Three-Dimensional MF/Ti3C2Tx/PmPD by Interfacial Polymerization for Efficient Hexavalent Chromium Removal

Separation and Concentration of Nitrogen and Phosphorus in a Bipolar Membrane Electrodialysis System

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