Loading...
Please wait, while we are loading the content...
Similar Documents
Removal of Heavy Metals from Aqueous Solutions by Adsorption onto Modified Cellulose: Equilibrium, Kinetics and Thermodynamics Study
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mansour, R. A. Abobaker, Salem Elmenshawy, Mena |
| Copyright Year | 2017 |
| Abstract | Cellulose dialdehyde has been prepared and reacted with thiosemicarbazide to give thiosemicarbazone modified cellulose (CTSC). A new and a relatively green methodology have been developed for the selective separation of Ga (III) and In (III) ions. The batch removal of Ga (III) and In(III) from aqueous solution under different experimental conditions using economic adsorbent were investigated in this study. The effects of Ga (III) and In (III); initial concentration, contact time, adsorbent dosage, solution pH and temperature on CTSC adsorption were investigated. Ga (III) and In (III) adsorption uptake were found to decrease with increase in initial concentration, contact time and increase with the increase in temperature solution, whereas adsorption of Ga (III) and In (III) were more favorable at acidic pH 2.5 for Ga (III) and (2-2.5) for In (III). The isotherm results were analyzed using the Langmuir, Freundlich and Temkin isotherms. The pseudo-first order and pseudo-second order equations are applied to model the kinetics of Ga (III) and In (III) ions adsorption onto CTSC kinetic model. Thermodynamic parameters such as standard enthalpy (∆H), standard entropy (∆S), standard free energy (∆G) were determined. A single stage batch adsorber was designed for adsorption of Ga (III) ions from aqueous solutions based on the optimum isotherm, and the treated volume was calculated for different initial concentrations for Ga (III). Key words; Modified cellulose, Ga (III) and In (III) adsorption, kinetics, isotherms, thermodynamic parameters, Equilibrium model Received 25May 2017.Accepted 29July 2017 Presented in IWTC 20 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://iwtj.info/wp-content/uploads/2017/08/5.pdf |
| Alternate Webpage(s) | http://iwtc.info/wp-content/uploads/2017/05/31.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
