Effect of Ion Migration of Multiple Copper-Zinc Alloy on the Crystal Structure of Calcium Carbonate Scale

Abstract

Multiple copper-zinc alloy was used to treat water in order to restrict the formation of hard scale during heating process. Trace amounts of metal ions were dissolved from the alloy under the action of tiny battery corrosion, which took part in the crystallization of calcium carbonate crystal. The ion migration rules and its effect on the crystal structure of water scale were studied. The ICP test results show that after immersion in the water for 20 min, the zinc ion concentration increased to 0.35 mg•L-1 compared with contrast group. The simulating experiment of the scale crystal growth demonstrated that the calcium carbonate scale after treated with the alloy showed a transformation from calcite to aragonite, and the ratio of calcite to aragonite changed from 1:0.125 to 1:2.30. Meanwhile, the heat transfer efficiency was increased to 2.19%.

Effect of Activating Device on the Properties of Tap Water

“…In addition, galvanic cell action of copper-zinc alloy plays a very important role in the changes of surface tension. Standard electrode voltage of zinc is -0.763v [7]. It is easy to lose electrons and be oxidized.…”

“…The effects of mineral on pH value and surface tension of water have been researched [4][5][6]. The effects of copper-zinc alloy on water have also been studied [7]. Galvanic cell action of copper-zinc alloy can make surface tension of water reduce.…”