Abstract




 
   

IJE TRANSACTIONS C: Aspects Vol. 31, No. 12 (December 2018) 1967-1968   

downloaded Downloaded: 0   viewed Viewed: 46

  DYE ADSORPTION ON THE BLENDS OF SAFFRON PETALS POWDER WITH ACTIVATED CARBON: RESPONSE SURFACE METHODOLOGY
 
R. Davarnejad, R. Pishdad and S. Sepahvand
 
( Received: August 03, 2018 – Accepted: November 26, 2018 )
 
 

Abstract    One of the famous dyes is methylene blue (MB) which is a symbol of hazardous dyes. In this research, MB was adsorbed using the blends of saffron petals with activated carbon. Five independent variables involving pH (2-13), contact time (5-270 min), saffron petals powder dosage (0.1-10 g/l), initial concentration of MB solution (20-300 ppm) and activated carbon dosage (0.1-10 g/l) for MB adsorption were studied. The Central Composite Design (CCD) under Response Surface Methodology (RSM) was applied to estimate the independent variables effects on the MB adsorption. The optimum conditions for the 96.5% of removal were experimentally found at pH of 10.51, initial MB concentration of 85.90 ppm, saffron petals powder dosage of 7.07 g/l, contact time of 182.05 min and activated carbon dosage of 7.35 g/l while the operating conditions for the maximum removal of 95.31% were experimentally obtained at pH of 10.52, initial MB concentration of 83.13 ppm, saffron petals powder dosage of 7.77 g/l, contact time of 64.74 min and activated carbon dosage of 7.77 g/l.

 

Keywords    Adsorption, Biomass, Methylene blue, Wastewater

 




International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir