ZEOLIT ALAM TERMODIFIKASI SETILTRIMETILAMONIUM BROMIDA SEBAGAI ADSORBEN MULTIFUNGSI ANION SO42-, KATION NH4+ DAN SENYAWA NONPOLAR BENZENA; CETYLTRIMETHYLAMMONIUM BROMIDE MODIFIED NATURAL ZEOLITE AS MULTIFUNCTIONAL ADSORBENT FOR SO42- ANION, NH4+ CATION AND BENZENE NONPOLAR COMPOUND

MISKIYAH, Sutarno

2016 | Skripsi | FMIPA

Modification of natural zeolite from Klaten by cetyltrimethylammonium bromide (CTAB) surfactant as multifunctional adsorbent for SO42- anionic, NH4+ cationic, and benzene nonpolar compounds has been performed. The ability of surfactant modified natural zeolite (SMZ-CTAB) to remove SO42-, NH4+ and benzena compound from aqueous solutions was investigated by using a batch system. The study was conducted by washing natural zeolite using aquadest then activated by heated process in 3 M HCl at 72 oC for 30 minuts. Activated zeolite was modified by adding as much as twice of cation exchange capacity (CEC) of CTAB. The characterization of SMZ-CTAB were performed by fourier transform infrared (FTIR) spectrometry and X-ray diffraction (XRD) methods. Unadsorbed concentration of SO42- anion, NH4+ cation and benzene were analyzed by UV-Visible spectrophotometer. The result showed that major component of Klaten natural zeolite was mordenite and clinoptilolite. Activation process at zeolite caused decationization. The result of FTIR spectra showed that modification natural zeolite with CTAB has been successfully carried out at 1473, 2924 and 2854 cm-1 which shows the bending vibration of N+-(CH3)3, and the range of symmetric and asymmetric -CH2 of amine. The adsorption of SO42-, NH4+ and benzene on SMZ-CTAB followed Langmuir adsorption isotherm. The adsorption capacity of SMZ-CTAB for NH4+ was higher than that of benzene and SO42- with the adsorption capacity 1.87×10-3 mol g-1 for NH4+, 3.05×10-4 mol g-1 for benzene and 5.74×10-5 mol g-1 for SO42-. The adsorption capability of SO42- and benzene on SMZ-CTAB > activated natural zeolite > natural zeolite and the adsorption capability of NH4+ on natural zeolite > activated natural zeolite > SMZ-CTAB.

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