Study on Adsorption of CaCO₃ in Metal Surface Based on Electrochemical Techniques

Abstract:

The study of calcium carbonate adsorption is important significance to understand the fouling mechanism that is a major component of heat exchanger fouling. The influence on the adsorption of CaCO₃ crystallization fouling was researched in different material, roughness and supersaturation by the electrochemical impedance-time method. The results show that the material is not the essential influence on CaCO₃ absorption by analyzing the CaCO₃ adsorption layer data. The optimum conditions of maximum adsorption CaCO₃ quality: the roughness of the electrode polished by the sandpaper of 360 mesh, the supersaturation of 0.291g / L CaCO₃ solution. The experimental results of supersaturation are concordant with the roughness experiments. When the supersaturation is the middle value, the maximum adhesive force can reach the maximum. So the regulation of calcium carbonate supersaturation and roughness of heattransfer equipment can prevent the fouling. This study is a powerful detecting method to research the influence of the roughness on the adsorption of CaCO₃ crystallization fouling.

• Periodical: Advanced Materials Research (Volumes 268-270)
• Pages: 340-344
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.268-270.340
• Online since: July 2011
• Authors: Sheng Xian Cao, Da Yong Hao, Jia Ou, Yan Hui Zhang, Jia Wei Sun, Shan Rang Yang, Zhi Ming Xu
• Keywords: Adsorption, CaCO3 Fouling, Electrochemical Technique, Roughness

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