Journal
PARTICULATE SCIENCE AND TECHNOLOGY
Volume 32, Issue 4, Pages 348-354Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/02726351.2013.873505
Keywords
granular activated carbon; modification; potassium nickel hexacyanoferrate; Cesium adsorption
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GAC has been modified by loading of potassium nickel hexacyanoferrate (KNiCF) as a new adsorbent for cesium adsorption. The potassium nickel hexacyanoferrate-loaded granular activated carbon (KNiCF-GAC) was characterized using powder x-ray diffraction (XRD) and nitrogen adsorption-desorption isotherm data, infrared spectroscopy, and its cesium adsorption performance in aqueous solution was investigated. The effect of the various parameters such as initial pH value of the solution, contact time, temperature, and initial concentration of the cesium ion on the adsorption efficiencies of KNiCF-GAC have been studied systematically by batch experiments. The adsorption isotherm of KNiCF-GAC was studied and the fitted results indicated that the Langmuir model could well represent the adsorption process. The maximum adsorption capacity of Cs+ onto KNiCF-GAC was found to be 163.9mg center dot g(-1).
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