Adsorption of Cerium (IV) from Aqueous Solutions Using Activated Carbon Developed from Rice Straw - Open Journal of Geology

OJG > Vol.6 No.3, March 2016

Adsorption of Cerium (IV) from Aqueous Solutions Using Activated Carbon Developed from Rice Straw ()

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DOI: 10.4236/ojg.2016.63017 2,754 Downloads 4,410 Views Citations

Author(s)

Ehsan Farahmand

Affiliation(s)

Department of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.

ABSTRACT

In this study, the adsorption of Cerium from synthetic solution containing cerium oxide is investigated using activated carbon developed from rice straw that is activated by H₃PO₄. SEM and FTIR techniques are used to examine structural and morphological characteristics of rice straw and activated carbon. The optimum conditions obtained with the highest adsorption include contact time = 500 minutes, pH = 4, temperature = 35°C, cerium concentration = 300 ppm, and adsorbent dosage = 0.02 gr. The highest adsorption of Cerium is determined by 4.13 mg/g. Adsorption kinetics of cerium and equilibrium behavior is studied. It indicates that the adsorption process obeys Pseudo-first-order kinetic model and Langmuir isotherm model. The results of this study show that the activated carbon developed from rice straw activated by H₃PO₄ is a relatively effective adsorbent for the adsorption of cerium from aqueous solution.

KEYWORDS

Activated Carbon, Cerium, Isotherms, Adsorption Kinetics, Temperature, pH

Share and Cite:

Farahmand, E. (2016) Adsorption of Cerium (IV) from Aqueous Solutions Using Activated Carbon Developed from Rice Straw. Open Journal of Geology, 6, 189-200. doi: 10.4236/ojg.2016.63017.

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