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| Effect of Magnetite/Zeolite Synthesis Method on The Adsorption Ability of Co (II) ions
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Sriatun, Erika Aprilia Susanti, Sriyanti
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Abstract:
This research aims to obtain an adsorbent in the form of a magnetite/zeolite composite made directly (MZ DM) or indirectly (MZ NDM) and apply it to the adsorption of Co2+ ions. The research procedure involved natural zeolite activation, magnetite synthesis, indirect and direct magnetite/zeolite synthesis, and adsorption ability tests on Co2+ ions at varying contact times and adsorbate concentrations. The research results show that the XRD data of the magnetite/zeolite composite adsorbent, whether synthesized directly (MZ DM) or indirectly (MZ NDM), has peaks respectively at 2? = 35.52°, 53.46°, 62.5° and 2? = 30.04°, 35.52°, 53.46°, 63.8. Even though the magnetite peak is relatively low, it dominates the composite adsorbent material so the peaks in the zeolite diffractogram do not appear. From the data, the adsorption efficiency of Co2+ ions in the 1-60 minutes and a concentration of 100 - 500 ppm, MZ DM adsorbent is slightly higher but not significantly different from MZ NDM. These data show that the differences in synthesis methods do not affect the character of magnetite/zeolite, and both are very efficient (> 94%) as Co2+ ion adsorbents.
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