Study of batch adsorption of uranium ions by mcm-48 materials synthesized at room temperature
1 Department of Material Process Engineering of the Nuclear Research Center of Draria, BP 43 Sebala, Draria, Algiers, Algeria
2 Laboratory of Environmental Science and Technology of the National Polytechnic School, 10 Hassen Badi Avenue, BP 12, 16200 El Harrach, Algiers, Algeria
3 Laboratory of Environmental Science and Technology of the National Polytechnic School, 10 Hassen Badi Avenue, BP 12, 16200 El Harrach, Algiers, Algeria
2 Laboratory of Environmental Science and Technology of the National Polytechnic School, 10 Hassen Badi Avenue, BP 12, 16200 El Harrach, Algiers, Algeria
3 Laboratory of Environmental Science and Technology of the National Polytechnic School, 10 Hassen Badi Avenue, BP 12, 16200 El Harrach, Algiers, Algeria
Abstract
The mesoporous MCM-48 was synthesized at room temperature with different templates such as hexadecytrimethylammonium bromide (C16TABr), hexadecytrimethylammonium chloride (C16TACl) and dodecyltrimethlammonium chloride (C12TACl). The obtained materials were characterized by XRD, N2 adsorption/desorption, FTIR and SEM techniques, and their performance as uranium adsorbent were investigated. In this framework, the effect of contact time, pH of solution, initial uranium concentration and temperature were investigated in batch reactor. The results showed that the adsorption process was favorably fitted with the second-order kinetic model and the isotherm obeys to Langmuir model. Moreover, the maximum adsorption capacity of MCM-48 for uranium (VI) was of the order of 160 mg/g. The thermodynamic parameters indicated that the sorption of uranium ions on MCM-48 materials was a spontaneous and endothermic process.
Keywords
adsorption; characterization; MCM-48; synthesis; uranium