Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : GAC

Comparison The Kinetics of The Uptake of Sugars From The Draw Solution

Ghazi Derwish; Adel O. Sharif; Sami Al-Aibi; Jenan A. Al-Najar

Engineering and Technology Journal, 2016, Volume 34, Issue 3, Pages 441-451

The present work includes studying the kinetics of the adsorptionof two sugars (maltose and glucose)on activated carbon (GAC) and comparison between them. These sugars are used as draw solution in the forward osmosis process in MOD-SET system(manipulated osmosis desalination system, MOD combined with solute exchange technique, SET). In this work, batch experiment in a stirred tank was carried out to study kinetics adsorption. The experiment was carried out using HPLC to determine the concentrations of sucrose and maltosebefore and after adsorption. The kinetic models used are pseudo-first order, pseudo-second order, intraparticle diffusion and mass transfer model. The findings indicates that sucrose and maltose sorption onto GAC are both well represented by the pseudo second order model.

Removal of Cadmium(II) Onto Granular Activated Carbon And Kaolinite Using Batch Adsorption

Jenan A. Al-Najar; Ramzy S. H; Zaydoon M. S

Engineering and Technology Journal, 2010, Volume 28, Issue 10, Pages 2070-2080

The removal of Cd(II) onto granular activated carbon (GAC) and kaolinite in single
component systems has been studied using batch adsorption. Batch adsorption studied were
carried out under various amount of GAC and Kaolinite, Cd(II) ion concentration, pH and
contact time. The experimental data was analyzed by Langmuir, Freundlich and Redlich-
Peterson isotherms. The equilibrium adsorption capacity of Cd(II) was determined from
Langmuir isotherm equation and found to be 3.002 mg/g for GAC and 1.837 mg/g for
kaolinite. Pore diffusion model for batch adsorption is used to predict the concentrationdecay
curve for adsorption of Cd(II) onto GAC and kaolinite.