Electricity generation and recovery of iron hydroxides using a single chamber fuel cell with iron anode and air-cathode for electrocoagulation

Kim, Junghwan; Park, I Seul; Park, Joo Yang

doi:10.1016/j.apenergy.2015.09.041

Cited by 26 publications

(6 citation statements)

References 75 publications

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“…6(b). The maximum power density was 1,875 mW=m 2 , which was different from previous reports (Cheng et al 2007;Kim et al 2015). This maximum power density difference could be a result of multiple factors.…”

Section: Characteristics Of Iron-air Fuel Cellcontrasting

confidence: 86%

“…Third, NaCl affected the cell reaction. However, previous reports suggested that the effects of NaCl on the power production had both positive (increasing the ionic strength) and negative (hindered Pt catalyst performance) factors (Wang et al 2011;Kim et al 2015).…”

Section: Characteristics Of Iron-air Fuel Cellmentioning

confidence: 91%

“…As a more feasible method, fuel cells have been proposed for treating acid mine drainage (Leiva et al 2016). Based on previous reports, air-cathode fuel cells have been widely used to convert Fe 2þ or Fe anode to Fe oxides (Cheng et al 2011;Zhai et al 2013;Kim et al 2015). In these studies, utilization of the Fe oxide was the main concern, whereas Fe 2þ was neglected.…”

Section: Introductionmentioning

confidence: 99%

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Aqueous Phosphate Removal and Electricity Production Using an Iron–Air Fuel Cell

Sheng

2020

J. Environ. Eng.

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Phosphorus (P) surplus is a key factor in water eutrophication, and aqueous phosphate removal is a concern. In this study, ferrous ions (Fe 2þ ) were generated in situ by iron-air fuel cells and were used in the removal of P from synthetic P-containing wastewater. The P removal results indicated that different initial concentrations of P were more effectively removed by an in situ Fe 2þ generation than by the addition of FeSO 4 . The main P removal products of FeSO 4 were Fe hydroxides, whereas the main products with the iron fuel cell were vivianite and Fe hydroxides. These results suggested that Fe 2þ formed in situ had a more conducive and stronger affinity to bond phosphate than FeSO 4 . The maximum power density reached 1,875 mW=m 2 after 24 h of operation. The results indicate that the iron-air fuel cell can be used for P removal/recovery coupled with potential electricity generation.

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Section: Characteristics Of Iron-air Fuel Cellcontrasting

confidence: 86%

Section: Characteristics Of Iron-air Fuel Cellmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Aqueous Phosphate Removal and Electricity Production Using an Iron–Air Fuel Cell

Sheng

2020

J. Environ. Eng.

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“…However in case of H2SO 4 and NaOH as a strip solution no such precipitation was observed. At high concentration of acid or alkaline solution, oxide or hydroxide layer is formed on iron anode plate which inhibits iron plate for further formation of iron‐hydroxide complex (Kıyak and Kabasakalođlu, 1999; Kolics et al , 1998; Kim et al , 2015; Un et al , 2017; Maitlo et al , 2019). The percent recovery of Cr(VI) in strip phase for H 2 SO 4 and NaOH are 2.58 and 32.90% respectively.…”

Section: Resultsmentioning

confidence: 99%

Removal of hexavalent chromium from wastewater using supported liquid membrane: synthesis of chromium‐iron complex through electrochemical reaction

Mondal

Saha

2020

Water & Environment J

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Treatment of wastewater containing hexavalent chromium is the issue in this research. Supported liquid membrane with in situ electrochemical reaction in stripping section helps to reduce hexavalent chromium to trivalent chromium by forming chromium-iron complex. Iron plate acts as anode in stripping section. The chromium-iron complex is an useful value added product that can be used for various purposes such as catalyst in water-gas shift reaction. Aliquat 336 has been used as carrier for transport of hexavalent chromium. Various physicochemical parameters have been optimised to detect the condition of maximum transport and precipitation of chromium-iron complex in stripping phase. The important physico-chemical parameters such as strip phase concentration, strip phase pH and concentration of carrier (% v/v) in Liquid Membrane have been selected through response surface methodology to obtain optimum performance for %precipitation of chromium.

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“…The use of NaHCO3 will cause the iron electrode to quickly produce a passivation layer, which results in poor electrical performance and arsenic removal. Subsequently, Jung Hwan Kim et al [34] also constructed an iron-air battery, analyzed the reaction products, and explored the effect of arsenic removal under different pH conditions. It is judged by Raman spectroscopy that the reaction products of the iron electrode are mainly iron hydroxides such as fibrite and maghemite.…”

Section: Treatment Of Heavy Metals In Water By Metalair Batterymentioning

confidence: 99%

Review of the application of metal-air battery principlein water treatment

et al. 2019

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The reaction principle of metal air battery is expounded, and the application of this method in the field of water treatment as an emerging technology is introduced. The recent research results of domestic and foreign researchers using metal-air battery technology to treat pollutants in water (such as removing arsenic, reducing COD and collecting algae in water) are introduced, and the actual treatment effects of these methods are briefly described. The feasibility of applying metal-air battery technology to water treatment is analyzed. At the same time, the problems of water treatment using metal-air battery are pointed out. The broad application prospects of this technology are analyzed and prospected.

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Electricity generation and recovery of iron hydroxides using a single chamber fuel cell with iron anode and air-cathode for electrocoagulation

Cited by 26 publications

References 75 publications

Aqueous Phosphate Removal and Electricity Production Using an Iron–Air Fuel Cell

Aqueous Phosphate Removal and Electricity Production Using an Iron–Air Fuel Cell

Removal of hexavalent chromium from wastewater using supported liquid membrane: synthesis of chromium‐iron complex through electrochemical reaction

Review of the application of metal-air battery principlein water treatment

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