Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique

Electrochemical water treatment technology can be used for hard water softening, but its removal efficiency and energy consumption problems hinder its application. The effects of electrolysis voltage and cathode materials on efficiency, energy consumption and scale crystal form of electrochemical wa...

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Autores principales:	Wei Wang, Qi Chen, Wei Lin, Xiaotao Zheng, Jianmin Xu, Jiuyang Yu
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	caco3 scale cathode materials crystal composition electrochemical water treatment electrolysis voltage Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/492a5fb608984abd868488e23808c706
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id	oai:doaj.org-article:492a5fb608984abd868488e23808c706
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spelling	oai:doaj.org-article:492a5fb608984abd868488e23808c7062021-11-23T18:55:49ZEffect of operational parameters and material properties on hardness removal efficiency by electrochemical technique1606-97491607-079810.2166/ws.2021.105https://doaj.org/article/492a5fb608984abd868488e23808c7062021-11-01T00:00:00Zhttp://ws.iwaponline.com/content/21/7/3437https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Electrochemical water treatment technology can be used for hard water softening, but its removal efficiency and energy consumption problems hinder its application. The effects of electrolysis voltage and cathode materials on efficiency, energy consumption and scale crystal form of electrochemical water treatment technology were studied experimentally. The experimental results show that electrochemical water treatment can effectively remove more than 40% of the TDS (total dissolved solids) in the influent. The electrolysis voltage has a great influence on the removal rate of hardness ions. The optimum electrolytic voltage for the titanium plate cathode is 25 V. At this electrolytic voltage, the treatment capacity of the titanium plate cathode is 16% higher than that of the copper plate cathode, and the energy consumption is 16% lower than that of the copper plate. Titanium plates are more efficient than copper plates and consume less energy. The effects of electrochemical water treatment on the scale crystal form were investigated by SEM (scanning electron microscopy) and XRD (X-ray diffraction). Electrochemical water treatment increases the mass fraction of aragonite in the calcium carbonate scale and changed the microscopic surface structure of calcium carbonate scale. HIGHLIGHTS The descaling efficiency of titanium plate as a cathode is higher than that of copper plate.; The unit energy consumption of titanium plate is lower than that of copper plate.; The best efficiency reduces the TDS by more than 40%.; Electrochemical reaction makes the microstructure of calcium carbonate irregular.; The crystal type of CaCO3 will change from calcite to aragonite as the electrochemical reaction proceeds.;Wei WangQi ChenWei LinXiaotao ZhengJianmin XuJiuyang YuIWA Publishingarticlecaco3 scalecathode materialscrystal compositionelectrochemical water treatmentelectrolysis voltageWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 7, Pp 3437-3448 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	caco3 scale cathode materials crystal composition electrochemical water treatment electrolysis voltage Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	caco3 scale cathode materials crystal composition electrochemical water treatment electrolysis voltage Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Wei Wang Qi Chen Wei Lin Xiaotao Zheng Jianmin Xu Jiuyang Yu Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
description	Electrochemical water treatment technology can be used for hard water softening, but its removal efficiency and energy consumption problems hinder its application. The effects of electrolysis voltage and cathode materials on efficiency, energy consumption and scale crystal form of electrochemical water treatment technology were studied experimentally. The experimental results show that electrochemical water treatment can effectively remove more than 40% of the TDS (total dissolved solids) in the influent. The electrolysis voltage has a great influence on the removal rate of hardness ions. The optimum electrolytic voltage for the titanium plate cathode is 25 V. At this electrolytic voltage, the treatment capacity of the titanium plate cathode is 16% higher than that of the copper plate cathode, and the energy consumption is 16% lower than that of the copper plate. Titanium plates are more efficient than copper plates and consume less energy. The effects of electrochemical water treatment on the scale crystal form were investigated by SEM (scanning electron microscopy) and XRD (X-ray diffraction). Electrochemical water treatment increases the mass fraction of aragonite in the calcium carbonate scale and changed the microscopic surface structure of calcium carbonate scale. HIGHLIGHTS The descaling efficiency of titanium plate as a cathode is higher than that of copper plate.; The unit energy consumption of titanium plate is lower than that of copper plate.; The best efficiency reduces the TDS by more than 40%.; Electrochemical reaction makes the microstructure of calcium carbonate irregular.; The crystal type of CaCO3 will change from calcite to aragonite as the electrochemical reaction proceeds.;
format	article
author	Wei Wang Qi Chen Wei Lin Xiaotao Zheng Jianmin Xu Jiuyang Yu
author_facet	Wei Wang Qi Chen Wei Lin Xiaotao Zheng Jianmin Xu Jiuyang Yu
author_sort	Wei Wang
title	Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
title_short	Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
title_full	Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
title_fullStr	Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
title_full_unstemmed	Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
title_sort	effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/492a5fb608984abd868488e23808c706
work_keys_str_mv	AT weiwang effectofoperationalparametersandmaterialpropertiesonhardnessremovalefficiencybyelectrochemicaltechnique AT qichen effectofoperationalparametersandmaterialpropertiesonhardnessremovalefficiencybyelectrochemicaltechnique AT weilin effectofoperationalparametersandmaterialpropertiesonhardnessremovalefficiencybyelectrochemicaltechnique AT xiaotaozheng effectofoperationalparametersandmaterialpropertiesonhardnessremovalefficiencybyelectrochemicaltechnique AT jianminxu effectofoperationalparametersandmaterialpropertiesonhardnessremovalefficiencybyelectrochemicaltechnique AT jiuyangyu effectofoperationalparametersandmaterialpropertiesonhardnessremovalefficiencybyelectrochemicaltechnique
_version_	1718416151909761024

Effect of operational parameters and material properties on hardness removal efficiency by electrochemical technique

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