Evaluation of energy consumption for effective seawater electrolysis based on the electrodes and salinity

Youmi Jung; Yeojoon Yoon; Minhwan Kwon; Sungcheoul Roh; Tae Mun Hwang; Joon Wun Kang

doi:10.1080/19443994.2015.1040272

Evaluation of energy consumption for effective seawater electrolysis based on the electrodes and salinity

Youmi Jung, Yeojoon Yoon, Minhwan Kwon, Sungcheoul Roh, Tae Mun Hwang, Joon Wun Kang

Division of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

This study recommended the effective condition in electrolysis of saline water considering the energy consumption. The experiments were performed using two types of electrodes, IrO₂/Ti and Pt/Ti, under various salinity conditions (4, 8, 16, 32, and 46 PSU) and current density conditions (11, 33, 55, 111, and 222 mA/cm²). The electrolysis produced mainly bromine, which was measured as a total residual oxidant (TRO). Seawater electrolysis produced TRO linearly with increasing the run time and current density. Below 32 PSU, the electrolysis using the IrO₂/Ti electrode produced the TRO greater than that using the Pt/Ti electrode. The TRO formation rate of the IrO₂/Ti electrode increased following a half parabola pattern in terms of salinity, while that of the Pt/Ti electrode increased until 32 PSU, and then it decreased to 46 PSU. The measured electric power of both electrodes showed the same graph tendency with a parabolic curve as a quadratic equation. The energy consumption of the IrO₂/Ti and Pt/Ti electrodes showed a quite different tendency. Considering the energy consumption as well as the required time for TRO formation, the same range of current density (30–50 mA/cm²) is recommended for the two electrodes, IrO₂/Ti and Pt/Ti electrodes, even in a different tendency of energy consumption.

Original language	English
Pages (from-to)	10136-10145
Number of pages	10
Journal	Desalination and Water Treatment
Volume	57
Issue number	22
DOIs	https://doi.org/10.1080/19443994.2015.1040272
Publication status	Published - 2016 May 8

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (2013R1A2A2A05006466) and a grant (code 13IFIP-B065893-01) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean Government.

All Science Journal Classification (ASJC) codes

Water Science and Technology
Ocean Engineering
Pollution

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title = "Evaluation of energy consumption for effective seawater electrolysis based on the electrodes and salinity",

abstract = "This study recommended the effective condition in electrolysis of saline water considering the energy consumption. The experiments were performed using two types of electrodes, IrO2/Ti and Pt/Ti, under various salinity conditions (4, 8, 16, 32, and 46 PSU) and current density conditions (11, 33, 55, 111, and 222 mA/cm2). The electrolysis produced mainly bromine, which was measured as a total residual oxidant (TRO). Seawater electrolysis produced TRO linearly with increasing the run time and current density. Below 32 PSU, the electrolysis using the IrO2/Ti electrode produced the TRO greater than that using the Pt/Ti electrode. The TRO formation rate of the IrO2/Ti electrode increased following a half parabola pattern in terms of salinity, while that of the Pt/Ti electrode increased until 32 PSU, and then it decreased to 46 PSU. The measured electric power of both electrodes showed the same graph tendency with a parabolic curve as a quadratic equation. The energy consumption of the IrO2/Ti and Pt/Ti electrodes showed a quite different tendency. Considering the energy consumption as well as the required time for TRO formation, the same range of current density (30–50 mA/cm2) is recommended for the two electrodes, IrO2/Ti and Pt/Ti electrodes, even in a different tendency of energy consumption.",

author = "Youmi Jung and Yeojoon Yoon and Minhwan Kwon and Sungcheoul Roh and Hwang, {Tae Mun} and Kang, {Joon Wun}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (2013R1A2A2A05006466) and a grant (code 13IFIP-B065893-01) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean Government.",

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doi = "10.1080/19443994.2015.1040272",

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AU - Jung, Youmi

AU - Yoon, Yeojoon

AU - Kwon, Minhwan

AU - Roh, Sungcheoul

AU - Hwang, Tae Mun

AU - Kang, Joon Wun

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (2013R1A2A2A05006466) and a grant (code 13IFIP-B065893-01) from Industrial Facilities & Infrastructure Research Program funded by Ministry of Land, Infrastructure and Transport of Korean Government.

PY - 2016/5/8

Y1 - 2016/5/8

N2 - This study recommended the effective condition in electrolysis of saline water considering the energy consumption. The experiments were performed using two types of electrodes, IrO2/Ti and Pt/Ti, under various salinity conditions (4, 8, 16, 32, and 46 PSU) and current density conditions (11, 33, 55, 111, and 222 mA/cm2). The electrolysis produced mainly bromine, which was measured as a total residual oxidant (TRO). Seawater electrolysis produced TRO linearly with increasing the run time and current density. Below 32 PSU, the electrolysis using the IrO2/Ti electrode produced the TRO greater than that using the Pt/Ti electrode. The TRO formation rate of the IrO2/Ti electrode increased following a half parabola pattern in terms of salinity, while that of the Pt/Ti electrode increased until 32 PSU, and then it decreased to 46 PSU. The measured electric power of both electrodes showed the same graph tendency with a parabolic curve as a quadratic equation. The energy consumption of the IrO2/Ti and Pt/Ti electrodes showed a quite different tendency. Considering the energy consumption as well as the required time for TRO formation, the same range of current density (30–50 mA/cm2) is recommended for the two electrodes, IrO2/Ti and Pt/Ti electrodes, even in a different tendency of energy consumption.

AB - This study recommended the effective condition in electrolysis of saline water considering the energy consumption. The experiments were performed using two types of electrodes, IrO2/Ti and Pt/Ti, under various salinity conditions (4, 8, 16, 32, and 46 PSU) and current density conditions (11, 33, 55, 111, and 222 mA/cm2). The electrolysis produced mainly bromine, which was measured as a total residual oxidant (TRO). Seawater electrolysis produced TRO linearly with increasing the run time and current density. Below 32 PSU, the electrolysis using the IrO2/Ti electrode produced the TRO greater than that using the Pt/Ti electrode. The TRO formation rate of the IrO2/Ti electrode increased following a half parabola pattern in terms of salinity, while that of the Pt/Ti electrode increased until 32 PSU, and then it decreased to 46 PSU. The measured electric power of both electrodes showed the same graph tendency with a parabolic curve as a quadratic equation. The energy consumption of the IrO2/Ti and Pt/Ti electrodes showed a quite different tendency. Considering the energy consumption as well as the required time for TRO formation, the same range of current density (30–50 mA/cm2) is recommended for the two electrodes, IrO2/Ti and Pt/Ti electrodes, even in a different tendency of energy consumption.

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