Abstract
The scale of magnesium carbonate deposited on the pipe wall was investigated in the present study. In the experimental work, the scale-forming solution was prepared by mixing equimolar solutions of MgCl2 and Na2CO3. The alumina was selected to inhibit the crystal growth. The scale growth was continuously observed by measuring the conductivity of the solution coming out of the pipe. The formed scale was then evaluated using SEM/EDX analysis. The result showed that the scale has a plate like morphology and the crystalline phase of the scale was found to be mostly calcite. The presence of alumina seemed to change the morphology of the crystals. The results with an influence of 20 ppm alumina were able to extend 100% induction time and crust mass that formed down drastically to 40% and were able to change the morphology of crystals.
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