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Removal Comparison of Methylene Blue Dye by Pumice Stone and Powder Activated Carbon From Aqueous Solutions



Naderi M1 ; Moradi M2, 3 ; Sharafi K2, 4
Authors
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Authors Affiliations
  1. 1. School of Public Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
  2. 2. Department of Environmental Health Engineering, School of Public Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
  3. 3. Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, 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

Color material in the effluent of wastewater, will cause harmful effects on aquatic ecosystems. So when discharging wastewater into receiving waters, should be reduced to an acceptable level. The aim of this study is comparison the efficiency of pumice stone and powder activated carbon for the removal of methylene blue dye(MB) from aqueous solutions. In this study, three variables Including contact time(15, 30, 45,60 and 75 min), adsorbent dosage(0.2, 0.5, 0.8,1.1 and 1.4gr/L) and pH(3, 5, 7, 9 and 11), In removal of methylene blue dye (with the constant initial concentration of 85 mg/L) by pumice and activated carbon powder were investigated. Based on the three variables, 20 of the experiment (Run) for both adsorbents were carried out, and finally, dye concentration was measured by a spectrophotometer at a wavelength of 665 nm. The results showed that with increasing each variable, the amount of MB dye removal increases. In addition, highest efficiency of pumice and powder activated carbon in removal of MB dye was 82.5% and 100% respectively, that this efficiency was obtained in contact time (75 min), adsorbent dosage (1.4gr/L) and pH (11). Based on results, it can be concluded that if we can provide optimal conditions for MB dye removal, pumice as an effective absorbent instead of expensive adsorbent activated carbon used to remove cationic dyes from effluent of industrial wastewaters. © 2016, International Journal of Pharmacy and Technology. All rights reserved.
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