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Information Seminar Paper

Title

APPLICATION OF NATURAL ZEOLITES FOR REDUCTION OF WATER HARDNESS FROM GROUNDWATER RESOURCES

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Abstract

 ONE OF THE PARAMETERS OF CONCERN AND A COMMONLY REPORTED ASPECT OF GROUNDWATER QUALITY IS WATER HARDNESS. THE MAIN OBJECTIVE OF THIS RESEARCH IS TO EVALUATE THE PERFORMANCE OF LOW-COST NATURAL ZEOLITES FOR REDUCTION OF WATER HARDNESS FROM GROUNDWATER RESOURCES IN HORMOZGAN PROVINCE, SOUTH OF IRAN. COLLECTED GROUNDWATER SAMPLES WERE EXTREMELY HARD. MINIMUM MIXING TIME TO ACHIEVE EQUILIBRIUM WAS 180 MIN AND OPTIMUM ZEOLITE DOSE OF 40 G/100 ML. REMOVAL OF MG BY ZEOLITE IS NOT SIGNIFICANTLY AFFECTED BY CHANGE IN PH. HOWEVER, CA REMOVAL SIGNIFICANTLY DECREASES WITH INCREASING PH. IT WAS ALSO OBSERVED THAT ZEOLITE HAD A PH BUFFERING CAPACITY AND FINAL PH VALUES WERE CLOSE TO NEUTRAL. EXCHANGE CAPACITY OF ZEOLITE IS ESTIMATED TO BE 2.8 MG CA/G ZEOLITE (0.14 MEQ/G) AND 1.4 MG MG/G ZEOLITE (0.11 MEQ/G) FOR S210 GROUNDWATER SAMPLES. IN THE CASE OF E116 GROUNDWATER THE EXCHANGE CAPACITY OF ZEOLITE FOR CA WAS GREATER THAN 3 MG CA/G ZEOLITE (0.15 MEQ/G), HOWEVER, THE EXCHANGE CAPACITY OF ZEOLITE FOR MG WAS LOWER AND WAS ABOUT 0.6 MG MG/G ZEOLITE (0.05 MEQ/G).

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