Removal of methylene blue from aqueous solutions using date pits /
إزالة أزرق الميثيلين من المحاليل المائية بواسطة نوى البلح
Nada Mohamed Ahmed Aboeleneen ; Supervised Nabil M. Abdelmonem , Ramadan A. Mansour
- Cairo : Nada Mohamed Ahmed Aboeleneen , 2017
- 78 P. : facsimiles ; 30cm
Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Chemical Engineering
The retention profile of methylene blue from aqueous solutions onto the solid sorbent date pits has been investigated. Fourier transform infra-red, scanning electron microscope, brunaure-emmeu-teller analysis were performed to determine the charateristics of the solid material. The effect of contact time, adsorbent dosage, temperature, and solution pH were investigated. The adsorption was found to increase with increasing time, decreasing temperature and increasing dosage up to equilibrium values which was 20 minute, 25C, and 0.1 gram adsorbent respectively. The adsorption was favorable at pH=7. The adsorption equilibrium data were best fitted by Freundlich isotherm. The adsorption kinetics was found to follow the pseudo second order kinetic model. The thermodynamic parameters of the uptake of methylene blue onto the date pits indicated that, the process is exothermic and proceeds spontaneously at low temperature. A single stage batch adsorber was designed for adsorption of methylene blue by date pits based on optimum isotherm