Document Details

Document Type : Thesis 
Document Title :
ADSORPTIVE BEHAVIOR OF SOME N-ALKYL PYRIDINIUM SALTS FROM AQUEOUS SOLUTIONS ON A STRONG ACID CATION EXCHANGE RESIN
سلوك امتزاز بعض أملاح N- الكيل بريدينيوم من المحاليل المائية على مبادل كاتيوني حمضي قوي
 
Subject : Faculty of Sciences 
Document Language : Arabic 
Abstract : The effective of Amberlit-IR 120 H+ resin to remove some N-alkyl pyridinium salts from aqueous solution at certain conditions was investigated. The experimental data illustrate that the adsorption efficiency increased with increasing the adsorbent amount due to the availability of unoccupied active sites on the resin. Furthermore, it increased with increasing the adsorbate amount as a result of increasing the adsorbate cations around the active sites. Increasing the contact time increased the adsorption efficiency as well since it achieved a sufficient time for the adsorption to reach equilibrium. But adding NaCl to the solution hindered the adsorption because of the competition between Na+ and the organic cations to be adsorbed on the resin surface. There was a slight decrease in the adsorption capacity with increasing the temperature due to the weakness of the adsorptive forces. The experimental evidence proved that the adsorption efficiency decreased as the alkyl chain decreased. The thermodynamic equilibrium parameters of the adsorption processes were evaluated. The evidence was indicative of the feasibility, spontaneous, disordered nature of the exothermic sorption process. Moreover, pH measurements show a decline in pH after contact proving the ion exchange reaction whereas the conductivity measurements represent an increase after contact due to increase H+ in the solution. Freundlich, Temkin and D.R gave bilinear segments model based on the adsorbate initial concentrations except that for compound III where it gave straight of one segment for Temkin adsorption isotherm. Temkin model fitted the adsorption process since r2 values were maximum. According to Freundlich and D.R models, it was found that the adsorption capacity decreased with increasing the alkyl chain length at the low concentration where the adsorption system was governed by ion exchange reaction. However, the opposite was obtained at the high concentration where the adsorption system was governed by hydrophobic interaction. It can be concluded that Amberlit-IR 120 H+ resin is an efficient adsorbent for removal some N-alkyl pyridinium salts from an aqueous solution. 
Supervisor : Dr. Jamilah M. Alahmari 
Thesis Type : Master Thesis 
Publishing Year : 1439 AH
2018 AD 
Co-Supervisor : prof. Ehteram A. Noor 
Added Date : Thursday, July 26, 2018 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
نجاح عياد الشمريAlshammari, Najah AyadResearcherMaster 

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