Effect of Cetyltrimethylammonium Bromide (CTAB)Template on Synthesis of Zeolitic Material from Fly Ash and Application of Zeolitic Material obtained as an Adsorbent of Heavy Metals Cd and Cu

Septiani, Upita and Admi, Admi and Afriza, Dedi and Yefrida, Yefrida (2018) Effect of Cetyltrimethylammonium Bromide (CTAB)Template on Synthesis of Zeolitic Material from Fly Ash and Application of Zeolitic Material obtained as an Adsorbent of Heavy Metals Cd and Cu. Research Journal of Chemistry and Environment, 22 (9). pp. 23-26. ISSN 0972-0626

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Abstract

Zeolitic materials were prepared from coal fly ash by hydrothermal synthesis method with and without Cetyltrimethylammonium Bromide (CTAB) template at pH 14, temperature 60οC and seawater as a solvent. The zeolitic material obtained was characterized by Xray diffraction (XRD), Fourier transformed infrared (FT-IR) spectroscopy, Scanning electron microscopy (SEM) and has characteristics of zeolite hydroxysodalite. N2 adsorption desorption results show that zeolitic materials prepared with and without CTAB template have a specific surface area 5.130 m2g-1 and 4.889 m2g-1, average pore size 30.21 nm and 25.84 nm and total pore volume 0.078 cc g-1 and 0.064 cc g-1 respectively. The zeolitic materials obtained were utilized as an adsorbent to heavy metal Cd and Cu. The maximum adsorption capacities of the zeolite materials that were prepared with and without CTAB template against heavy metal were 333.3 mg g-1 and 303.0 mg g-1for Cd metal and 322.6 mg g-1 and 285.7 mg g-1 for Cu metal respectively. These results indicated that synthetic zeolite materials have potential as adsorbent of heavy metals Cd and Cu. The results also suggested that the adsorption capacity was affected by specific surface area, average pore size and total pore volume. Keywords: Fly ash, zeolite, adsorption, heavy metal.

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