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:: Volume 15, Number 44 (6-2014) ::
Zanko J Med Sci 2014, 15(44): 24-36 Back to browse issues page
Survey of efficiency Pumice stone for decolorization of dye direct blue 71 from aqueous solutions
F. Kurd Mostafapour, E. Bazrafshan, H. Rezaei
MSc Student of Environmental Engineering, Department of Health, Zahedan University of Medical Sciences, Zahedan
Abstract:   (916 Views)
ABSTRACT
Background and Aim: Colored wastewater treatment is one of the major challenges facing environmental engineering. Adsorption process for the removal of pollutants from wastewater is one of the most important methods. The purpose of this study was to evaluate the efficacy of inorganic adsorbents for the removal of pumice is blue 71 from aqueous solutions. 
Material and Methods: This experimental study - which Asrmtghyyrhay laboratory pH (2, 4, 6, 8, 10, 12), adsorbent concentration (9, 7, 5, 3, 1, 0.8, 0.5, 0.2) g/l and initial dye concentration (10, 20, 30, 40, 50, 100, 150, 250) ppm and contact time (20, 40, 60, 80, 100, 120, 140, 160, 180) at 4 ° C (25, 30, 35, 40) ° C isotherm model and the adsorption efficiency was investigated. 
Results: Maximum removal efficiency at pH=2, adsorbent dosage 5 g/l, primary concentration or dye 40 mg/l, and contact time 80 min and s 25 oC % 98.88 was achieved. By increase pH and primary concentration or dye efficiency of adsorption was decreased and By increase adsorbent dose efficiency of adsorption was increased and at S 25 oC and 30 oC By increase contact time 80 min efficiency of adsorption was increased and later was decreased and at S 35oC and 40 oC By increase contact time 60 min efficiency of adsorption was increased and later was decreased. The results show that in all four temperatures, equations of Freundlich isotherm models will follow. Absorption coefficient model for S 25 oC (R2=0.977), 30 oC (R2=0.966), 35 oC (R2=0.924), 40 oC (R2=0.963). 
Conclusion: This study showed that the mineral pumice efficient adsorbent for removing blue from aqueous solutions is 71.
Keywords: Adsorption, pumice, Zahedan, blue 71
Full-Text [PDF 576 kb]   (148 Downloads)    
Type of Study: Research | Subject: Special
Received: 2014/05/5 | Accepted: 2014/06/6 | Published: 2014/06/15
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Kurd Mostafapour F, Bazrafshan E, Rezaei H. Survey of efficiency Pumice stone for decolorization of dye direct blue 71 from aqueous solutions. Zanko J Med Sci. 2014; 15 (44) :24-36
URL: http://zanko.muk.ac.ir/article-1-43-en.html
Volume 15, Number 44 (6-2014) Back to browse issues page
مجله علوم پزشکی زانکو Zanko Journal of Medical Sciences
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