Interaction between Kaolin and Urea in Organoclay and Its Impact on Removing Methylene Blue from Aqueous Solution

Sabri M. Husssein¹, Omar H. Shihab², Sattar S. Ibrahim¹, Naser M. Ahmed^3*

¹Department of Chemistry, College of Science, University of Anbar, Anbar, Iraq.
²Department of Chemistry, College of Women Education, University of Anbar, Anbar, Iraq.
³Nano-Optoelectronics Research and Technology Laboratory, School of Physics, University Sains Malaysia, Penang, Malaysia.

DOI: 10.4236/wjnse.2015.51001                

Abstract

Interaction between kaolin (particle size 53 and 106 μm) and urea was studied by infrared spectroscopy and powder X-ray diffraction. Interaction was found to be dependent on the particle size of kaolin raw material. Nature of interaction achieved through the formation of hydrogen bonds between urea and both AlOH and Si-O surface of kaolinite. Effect of temperature on equilibrium adsorption of methylene blue (MB) from aqueous solution using kaolin also studied, the results were analyzed by Langmuir and frendlich isotherms. Thermodynamic parameters such as ΔG, ΔH and ΔS were calculated. Results suggested that the MB adsorption on kaolin was spontaneous and exothermic process.

Keywords

Kaolin, Urea, Intercalation, Thermodynamic, Methylene Blue and Adsorption

Conflicts of Interest

The authors declare no conflicts of interest.

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