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An innovative compound bed of EDI device with enhancing ion-exchange resins regeneration efficiency

Chen, Xu ; Wang, Lida ; Wan, Zhuang ; Sun, Wen ; Yang, Zhengqing ; Jin, Jingjing ; Liu, Guichang

Water science and technology, 2021-05, Vol.83 (10), p.2549-2559 [Periódico revisado por pares]

London: IWA Publishing

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Título:
An innovative compound bed of EDI device with enhancing ion-exchange resins regeneration efficiency
Autor: Chen, Xu ; Wang, Lida ; Wan, Zhuang ; Sun, Wen ; Yang, Zhengqing ; Jin, Jingjing ; Liu, Guichang
Assuntos: Anion exchange ; Anion exchanging ; Anions ; Antifouling substances ; Cations ; compound bed ; Current density ; Efficiency ; electrodeionization ; Electrodes ; Energy consumption ; Experiments ; Fouling ; Influent water ; Influents ; Inlets (waterways) ; Ion exchange ; Ion exchange resins ; Membranes ; Methods ; Reagents ; Regeneration ; Regeneration (biological) ; Resins ; Water conductivity ; Water hardness ; Water quality
É parte de: Water science and technology, 2021-05, Vol.83 (10), p.2549-2559
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Abstract Electrodeionization (EDI) technology is limited by low regeneration efficiency of ion exchange resins, requirements of high-quality influent water, fouling of the ion exchange membrane and electrode, etc. In this work, a novel bed type called a compound bed in which cation and anion exchange resins were near the cation and anion exchange membrane and placed in layers, was proposed to implement high-efficiency regeneration of ion exchange resins. The influence of different operating conditions on the regeneration efficiency of ion exchange resins was elucidated as well. The regeneration efficiency of ion exchange resins could reach 73.1%, when the device was operated for 5 h under current density of 9 mA/cm2, with a cation and anion exchange resins ratio of 2: 3, influent water conductivity of 1,360 μS/cm and hardness of 400 mg/L. Therefore, the proposed compound bed structure not only widened the inlet water conditions, but also achieved the high-efficiency regeneration of ion exchange resins and anti-fouling of membranes and electrodes.
Editor: London: IWA Publishing
Idioma: Inglês

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An innovative compound bed of EDI device with enhancing ion-exchange resins regeneration efficiency

Chen, Xu ; Wang, Lida ; Wan, Zhuang ; Sun, Wen ; Yang, Zhengqing ; Jin, Jingjing ; Liu, Guichang

London: IWA Publishing

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