Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (19): 2313-2318. Previous Articles     Next Articles

Full Papers



  1. (上海电力学院 上海热交换系统节能工程技术研究中心 上海高校电力腐蚀控制与应用电化学重点实验室 上海 200090)
  • 投稿日期:2011-02-09 修回日期:2011-05-03 发布日期:2011-06-10
  • 通讯作者: 葛红花
  • 基金资助:


Effect of Electromagnetic Treatment on Sedimentation and Adhesion Behavior of Calcium Carbonate Particles Formed in Aqueous Solution

GE Hong-Hua, WEI Cheng-Jun, GONG Xiao-Ming, XU Xue-Min, TAO Jie-Ting, YAO Xiu-Ping   

  1. (Shanghai University of Electric Power, Shanghai Engineering Research Center of Energy-Saving in Heat Exchange Systems, Shanghai Key Laboratory of Colleges and Universities for Corrosion Control in Electric Power System and Applied Electrochemistry, Shanghai 200090)
  • Received:2011-02-09 Revised:2011-05-03 Published:2011-06-10

The sedimentation behavior and scale inhibition mechanism of CaCO3 particles freshly precipitated from equimolar Na2CO3 and CaCl2 solution after electromagnetic treatment were studied by measurement and analysis of Zeta potentials, surface free energy and theoretical work of adhesion. It was found that the absolute value of Zeta potential of CaCO3 decreased by about 5 mV, and the sedimentation rate of particles sped up after electromagnetic treatment. The surface free energy of CaCO3 particles formed after electromagnetic treatment is 31.59 mJ•m-2 which decreased by about 30%, and the Lifshitz-van der Waals component are 43.53 mJ•m-2 and 25.50 mJ•m-2 for the untreated and treated particles respectively, showing that CaCO3 particles became more thermodynamically stable after treatment. The theoretical work of adhesion between electromagnetically treated CaCO3 particles and 316L stainless steel in aqueous solution was lower than that of the untreated samples, and deposition of the electromagnetically treated CaCO3 on the surface of stainless steel was less.

Key words: electromagnetic water treatment, antiscale, calcium carbonate, Zeta potential, surface free energy, theoretical work of adhesion

CLC Number: