Effect of CTA-Br Templete on Synthesis of NaX Zeolite from Fly Ashes and Applikation of NaX zeolite Obtained as an Adsorbent of Heavy Metals Cd and Cu

Septiani, Upita and Admi, Admi and Sari, Intan Purnama and Apri, Lucresia Ridila and Yefrida, Yefrida and Safni, Safni Effect of CTA-Br Templete on Synthesis of NaX Zeolite from Fly Ashes and Applikation of NaX zeolite Obtained as an Adsorbent of Heavy Metals Cd and Cu. -. (Unpublished)

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Abstract

NaX Zeolites were prepared from fly ashes by hydrothermal method with and without CTABr templete at pH 14, temperature 60οC and sea water as a solvent. The NaX Zeolite obtained was characterized by X-ray diffraction (XRD), Fourier transformed infrared (FT-IR) spectroscopy, Scanning electron microscopy (SEM), and has charateristics of NaX Zeolite. N2 adsorption desorption results showed that NaX zeolites prepared with and without CTABr templete 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 recpectively. The application of NaX zeolite is as an adsorbent to heavy metal Cd and Cu. The maximum adsorption capacities of NaX zeolites that were prepared with and without CTA-Br templete against heavy metal ions were 333.3 mg g-1 and 303.0 mg g-1for Cd+2 ion and 322.6 mg g-1 and 285.7 mg g-1 for Cu+2 ion respectively. These results indicated that synthetic NaX zeolites 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.

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