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has been cited by the following article:

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

  AUTHORS: Ehsan Farahmand

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

  JOURNAL NAME: Open Journal of Geology, Vol.6 No.3, March 29, 2016

  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.