Impact of the magnetic treatment on some of the unconventional waters’ properties

Document Type : Original Article


Assistant Professor, University of Kashan, Faculty of Natural Resources & Earth Sciences



Continued population growth and declining trend of the annual rainfall across the world justified concerns about future access to drinking and agricultural water resources. In response, many researchers have raised the idea of using treated unconventional waters as a solution to water shortage, especially in the arid and semi-arid regions. It has been proven that magnetic fields can affect the structure of mineral compounds and alter some of their properties. The majority of past studies on the use of magnetic fields for water treatment have tested the effect of weak magnetic fields with peak strength of 0.50 T on a single type of unconventional water. The present study was conducted by exposing several types of unconventional water including saline water, acidic water, alkaline water, and waste water to magnetic fields of 0.75 and 1.0 T. Statistical analysis was performed using the paired t-test. The results showed a significant effect of the 0.75T magnetic field on the pH of waste water, saline water (TDS=4000mg/l) and saline water (TDS=9000mg/l) treatment groups and a significant impact of the 1.0T magnetic field on the pH of acidic water (pH=6) and alkaline water (pH=8) treatment groups. Magnetic treatment increased the pH of all tested unconventional waters except the alkaline ones. Both magnetic fields reduced the EC of saline water, but the 0.75T field was more effective in this respect. The 0.75T magnetic field can be used to treat acidic waters so as to reach a greater level of neutrality. The acidity of other unconventional waters can also be altered in the same way, but not as favorably. Exposure to magnetic fields reduced the electrical conductivity of saline waters, but increasing the strength of the magnetic field to 1.0 T did not lead to a higher salinity reduction.  The results indicate that magnetic fields can indeed improve the quality of unconventional waters by significantly altering some of their properties.


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