Anti-Scale Magnetic Method as a Prevention Method for Calcium Carbonate Scaling
The effect of anti-scale magnetic method (AMM) in retarding scaling deposition is confirmed by many
researchers, to result in new crystal morphology, crystal which has the tendency to remain suspended more than precipitated.
AMM is considered as an economic method when compared to other common methods used for scale prevention in
desalination plant as acid treatment and addition of antiscalant. The current project was initiated to evaluate the effectiveness
of AMM in preventing calcium carbonate scaling. The AMM was tested at different flow velocities (1.0, 0.5, 0.3, 0.1, and
0.003 m/s), different operating temperatures (50, 70, and 90°C), different feed pH and different magnetic field strength. The
results showed that AMM was effective in retarding calcium carbonate scaling deposition, and the performance of AMM
depends strongly on the flow velocity. The scaling retention time was found to be affected by the operating temperatures,
flow velocity, and magnetic strength (MS), and in general, it was found that as the operating temperatures increased the
effectiveness of the AMM in retarding calcium carbonate (CaCO3) scaling increased.
Index Terms - flow velocity, Magnetic field strength, and scale retention time.