TESTING OF A DEFLUORIDATING FILTER USING MgO-CaO-CaCI<sub>2</sub> FOR USE IN RURAL RAJASTHAN
Abstract:
<p align="justify"> A Magnesium Oxide-based defluoridation technique using MgO-CaO-Calcium Chloride and pH adjustment by Sodium Bisulphate has been suitably modified for use with fluoride contaminated local groundwater having high alkalinity. Taking into consideration the high bicarbonate concentration in raw groundwater the proportion of the lime has been changed. It was found that sodium bisulphate was not suitable for pH adjustment due to the high concentration of sulphate in the pH adjusted water. Therefore dilute HCl was used instead. Six trials of the adapted defluoridation technique have been carried out in the laboratory successfully at 50-liter scale. </p>
<p align="justify"> A Magnesium Oxide-based defluoridation technique using MgO-CaO-Calcium Chloride and pH adjustment by Sodium Bisulphate has been suitably modified for use with fluoride contaminated local groundwater having high alkalinity. Taking into consideration the high bicarbonate concentration in raw groundwater the proportion of the lime has been changed. It was found that sodium bisulphate was not suitable for pH adjustment due to the high concentration of sulphate in the pH adjusted water. Therefore dilute HCl was used instead. Six trials of the adapted defluoridation technique have been carried out in the laboratory successfully at 50-liter scale. </p>
DOI: 10.48141/SBJCHEM.v21.n21.2013.78_revista2013.pdf
Download PDF