Continuous electrodeionization for removal and recovery of Cr(VI) from wastewater

Xing, Yunqing; Chen, Xueming; Yao, Peidong; Wang, Dahui

doi:10.1016/j.seppur.2009.03.029

Cited by 59 publications

(19 citation statements)

References 18 publications

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“…- [14] and heavy metals such as Ni 2+ [15,16], Cr 6+ [17], and Cu 2+ [18]. It also produces highly pure water [9].…”

Section: Introductionmentioning

confidence: 99%

Removal of trace Cs(I), Sr(II), and Co(II) in aqueous solutions using continuous electrodeionization (CEDI)

Jiang¹,

Li²,

Zhao³

2019

Desalination and Water Treatment

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Nuclear power plants produce low-level radioactive wastewaters (LLRW) that contain radioactive nuclides. Prior to discharge, these radioactive nuclides need to be safely and efficiently removed. Continuous electrodeionization (CEDI) has shown potential for the treatment of LLRW. Here, we measured the performance of CEDI stacks on the removal of three different trace nuclides: Cs(I), Sr(II) and Co(II). Our results indicated that Cs(I) and Sr(II) actively migrated in the resin particles and were distributed in the resin profile according to the applied electric field. Nuclide removal was improved by increasing the working current. At a working current of 0.5 A, the removal efficiencies of Cs(I), Sr(II), and Co(II) amounted to 99.7%, 98.1%, and 77.1%, respectively. However, excessive working current resulted in the hydrolysis and formation of Co(OH) 2, which deposited on the surface of the cation exchange resin. The adsorption rate of Cs(I), Sr(II), and Co(II) for the resin was in the following order: Cs(I) > Sr(II) > Co(II). This order was also positively related to the removal efficiency of the CEDI stack. However, we found no significant relationship between resin adsorption capacity and CEDI removal efficiency.

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“…- [14] and heavy metals such as Ni 2+ [15,16], Cr 6+ [17], and Cu 2+ [18]. It also produces highly pure water [9].…”

Section: Introductionmentioning

confidence: 99%

Removal of trace Cs(I), Sr(II), and Co(II) in aqueous solutions using continuous electrodeionization (CEDI)

Jiang¹,

Li²,

Zhao³

2019

Desalination and Water Treatment

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“…Cr(VI) separation by EDI processes was studied [ 197 , 198 , 199 , 200 , 201 ]. For example, EDI (four-compartment device, Figure 7 a) was combined with IX [ 198 ].…”

Section: Industrial Wastewatermentioning

confidence: 99%

Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives

et al. 2020

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This paper presents a comprehensive review of studies on electrodialysis (ED) applications in wastewater treatment, outlining the current status and the future prospect. ED is a membrane process of separation under the action of an electric field, where ions are selectively transported across ion-exchange membranes. ED of both conventional or unconventional fashion has been tested to treat several waste or spent aqueous solutions, including effluents from various industrial processes, municipal wastewater or salt water treatment plants, and animal farms. Properties such as selectivity, high separation efficiency, and chemical-free treatment make ED methods adequate for desalination and other treatments with significant environmental benefits. ED technologies can be used in operations of concentration, dilution, desalination, regeneration, and valorisation to reclaim wastewater and recover water and/or other products, e.g., heavy metal ions, salts, acids/bases, nutrients, and organics, or electrical energy. Intense research activity has been directed towards developing enhanced or novel systems, showing that zero or minimal liquid discharge approaches can be techno-economically affordable and competitive. Despite few real plants having been installed, recent developments are opening new routes for the large-scale use of ED techniques in a plethora of treatment processes for wastewater.

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“…have been employed to remove Cr(VI) from wastewater [3][4][5][6][7][8]. These methods usually consume a large amount of electricity or chemicals and may produce secondary pollution, such as concentrated Cr(VI) wastewater [9].…”

Section: Introductionmentioning

confidence: 99%

Cr-methanol fuel cell for efficient Cr(VI) removal and high power production

Chen¹,

Fu²,

Fang³

et al. 2015

Applied Energy

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Continuous electrodeionization for removal and recovery of Cr(VI) from wastewater

Cited by 59 publications

References 18 publications

Removal of trace Cs(I), Sr(II), and Co(II) in aqueous solutions using continuous electrodeionization (CEDI)

Removal of trace Cs(I), Sr(II), and Co(II) in aqueous solutions using continuous electrodeionization (CEDI)

Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives

Cr-methanol fuel cell for efficient Cr(VI) removal and high power production

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