Electro-removal of arsenic(III) and arsenic(V) from aqueous solutions by capacitive deionization

Fan, Chen-Shiuan; Tseng, Szu‐Kung; Li, Kuan‐Ching; Hou, Chia‐Hung

doi:10.1016/j.jhazmat.2016.03.055

Cited by 161 publications

(41 citation statements)

References 43 publications

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“…1,2 In fact, it has been classied as a Group 1 human carcinogen by the International Agency for Research on Cancer (IARC). 3 Arsenic is the 20 th most abundant element in the Earth's crust, the 14 th in seawater and the 12 th most abundant element in the human body. 4 There are two forms of arsenic, namely arsenite [As(III)] and arsenate [As(V)].…”

Section: Introductionmentioning

confidence: 99%

Removal of As(iii) and As(v) from water using green, silica-based ceramic hollow fibre membranes via direct contact membrane distillation

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Removal of As(iii) and As(v) from water using green, silica-based ceramic hollow fibre membranes via direct contact membrane distillation

et al. 2019

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“…It was used also successfully for explanation of nitrate removal from brackish groundwaters [34]. As(III) and As(V) removal by CDI with activated carbon electrodes was reported by Fan and coworkers [35]. As ( Continued on next page Result found that sorption capacity is superior in the case of As(V) compared to As(III) because of the greater negative charge of the prevalent As(V) species.…”

Section: Discussion Of Pollutant Ion Removal By CDImentioning

confidence: 87%

“…As ( Continued on next page Result found that sorption capacity is superior in the case of As(V) compared to As(III) because of the greater negative charge of the prevalent As(V) species. Results prove that electrosorption could be responsible for removal of As(V) whereas in case of As(III) the oxidation of As(III) to As(V) is involved which could then be electrostatically adsorbed on the anode surface [35].…”

Section: Discussion Of Pollutant Ion Removal By CDImentioning

confidence: 90%

Current Progress of Capacitive Deionization for Removal of Pollutant Ions

Gaikwad¹,

Balomajumder²

2016

Electrochemical Energy Technology

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Abstract:A mini review of a recently developing water purification technology capacitive deionization (CDI) applied for removal of pollutant ions is provided. The current progress of CDI for removal of different pollutant ions such as arsenic, fluoride, boron, phosphate, lithium, copper, cadmium, ferric, and nitrate ions is presented. This paper aims at motivating new research opportunities in capacitive deionization technology for removal of pollutant ions from polluted water.

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“… 4 − 13 However, saline water sources often contain a multitude of ions in addition to sodium chloride (NaCl) that should be addressed when considering desalination. 14 − 16 Some of the ions that are harmful need to be entirely removed, such as arsenic, 17 while other ions (such as fluoride) can be beneficial in smaller quantities and should ideally be optimally removed. 18 This necessitates the development of technologies that can remove all kinds of ions from multi-ion solutions and, at the same time, preferably remove only the desired amounts of each ion species.…”

Section: Introductionmentioning

confidence: 99%

Predicting and Enhancing the Ion Selectivity in Multi-Ion Capacitive Deionization

Nordstrand

Dutta

2020

Langmuir

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Lack of potable water in communities across the globe is a serious humanitarian problem promoting the desalination of saline water (seawater and brackish water) to meet the growing demands of human civilization. Multiple ionic species can be present in natural water sources in addition to sodium chloride, and capacitive deionization (CDI) is an upcoming technology with the potential to address these challenges because of its efficacy in removing charged species from water by electro-adsorption. In this work, we have investigated the effect of device operation on the preferential removal of different ionic species. A dynamic Langmuir (DL) model has been a starting point for deriving the theory, and the model predictions have been validated using data from reports in the literature. Crucially, we derive a simple relationship between the adsorption of different ionic species for short and long adsorption periods. This is leveraged to directly predict and enhance the selective ion removal in CDI. Furthermore, we demonstrate an example of how this selectivity could reduce excess removal of ions to avoid remineralization needs. In conclusion, the method could be valuable for predicting the impact of improved device operation on capacitive deionization with multi-ion compositions prevalent in natural water sources.

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Electro-removal of arsenic(III) and arsenic(V) from aqueous solutions by capacitive deionization

Cited by 161 publications

References 43 publications

Removal of As(iii) and As(v) from water using green, silica-based ceramic hollow fibre membranes via direct contact membrane distillation

Removal of As(iii) and As(v) from water using green, silica-based ceramic hollow fibre membranes via direct contact membrane distillation

Current Progress of Capacitive Deionization for Removal of Pollutant Ions

Predicting and Enhancing the Ion Selectivity in Multi-Ion Capacitive Deionization

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