Hard water is water with high mineral content which is formed when water percolates through deposits of limestone, chalk or gypsum which are largely made up of calcium and magnesium carbonates, bicarbonate and sulfates. Water is essential for life but water with high concentrations of mineral content is harmful to health. Additionally, WHO reports that excess intake of calcium is associated with kidney stones and that of magnesium leads to diarrhea and laxative effects due to change in bowel habits (4). The present study is based on the principles of adsorption by immobilizing the magnesium ions using sugarcane bagasse as a bio adsorbent. The sugarcane bagasse was pre-treated through environment friendly process which involved washing, boiling, drying and grinding into powder for removal of magnesium ions (2). The experiment was performed in batches to study the effect of various controlling parameters such as the concentration of bio adsorbent, contact time, agitation speed on adsorption of magnesium using synthetic hard water (1). The efficiency of adsorption was found to be increasing with increasing concentration of adsorbent and the average percentage reduction in the concentration of magnesium ions from synthetic hard water was found to be 76.32% with a holding capacity of 3 hours. This study proves the favourability of the removal of magnesium ions onto sugarcane bagasse and the use of locally available bio waste which can be used for hard water treatment.
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Very nice 
project I will suggest my parents to use this method as our field has a heavy water supply
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