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论文类型：期刊论文

发表时间：2019-06-15

发表刊物：SEPARATION AND PURIFICATION TECHNOLOGY

收录刊物：SCIE、EI

卷号：217

页面范围：128-136

ISSN号：1383-5866

关键字：Cathode; Electrochemical water softening; Descaling rate; Energy consumption; Circulating cooling water

摘要：The high electrode area requirement limited the applications of electrochemical water softening technology, despite of conspicuous advantages. This work introduces an electrochemical water softening system with multi-meshes coupled cathodes to address fouling in industrial circulating cooling water systems. Experimental data indicate that the coupled cathode increases the descaling rate of electrochemical water softening system due to the produced self-synergy effect based on its unique multilayer structure. The synergistic effect is constructed by separating and positioning the chemical reactions (alkalinity production and scale deposition) to different regions of the coupled cathode, thus a large amount of OH- ions from the internal layers and the preferentially deposited scale on external layers accelerate the subsequent scale deposition in later stage of the process. This system displays the reduced electrode area requirement and energy consumption depending on the increased descaling rate. This work provides a facile strategy for the development and applications of electrochemical water softening technology.