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Application of Response Surface Methodology for Efficiency Analysis of Strong Non-Selective Ion Exchange Resin Column (A 400 E) in Nitrate Removal From Groundwater



Pirsaheb M1 ; Moradi M1, 2 ; Ghaffari HR3 ; Sharafi K1, 4
Authors
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Authors Affiliations
  1. 1. Research Center for Environmental Determinants of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
  2. 2. Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
  3. 3. Social Determinants in Health Promotion Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
  4. 4. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: International Journal of Pharmacy and Technology Published:2016

Abstract

Ion exchange process is the common and effective method in removing of nitrate from groundwater that different types of resins used for this purpose. This study was to evaluate the loading rate, resin height and volume of water passing effects on performance of down – flow strong non-selective ion exchange resin column (A 400 E) in terms of nitrate removal from groundwater. In present study was used the strong anionic resin A400E with non-selective properties for nitrate removal (Manufacture purolite UK). To effect study of height resin factor, three collection valves were mounted in the same spacing (30, 60 and 90 cm) on the column. Nitrate removal was studied in the three different load rate (10, 25 and 40 Bv/h), and five volume of water passing (40, 100, 160, 220 and 280). Totally 135 samples were taken. Nitrate measurement conducted based on standard test method for water and wastewater. Design of Expert (Ver.7) software was used for data analysis and charts draw. Results showed that with increasing of volume of water passing and loading rate, the efficiency removing of nitrate decreased, while the efficiency gradually decreased by increasing the height of resin up to 60 cm and system efficiency increased in height of 60 to 90 cm. Based on the influencing factors of studied parameters in the obtained model, the impact rate of operational parameters were evaluated on the performance of resin, “The volume of water passing”, “resin height” and “loading rate” respectively. It is necessary to consider that the height resin and flow rate given the cost effectiveness of system, to achieve the water quality with nitrate standard (less than 50 mg/L). © 2016, International Journal of Pharmacy and Technology. All rights reserved.
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