STUDI PENDAHULUAN PEMANFAATAN LIMBAH DESALINASIudUNTUK PEMBUATAN Mg/Al HYDROTALCITE-LIKEudSEBAGAI ADSORBEN METHYL ORANGE

摘要

The utilization of industrial wastewater into a versatile material that has been the focus ofudresearch for economics reasons, environmental and technical. One of the proposed industrialudwastewater for a new useful material is wastewater from the desalination process which is alsoudknown as brine water. The magnesium content in brine water is able to used as a source ofudmagnesium for the synthesis of Mg/Al hydrotalcite-like compound (Mg/Al HTlc). Mg/AludHTlc are widely investigated for their potential applications in research and industrial processesudas adsorbents, catalysts and /or catalyst precursors and pharmaceutical industry excipients.udAs adsorbents, Mg/Al HTlc are receiving greater interests in the environmental communityuddue to their high adsorption capacity. However, before using natural brine water, has conducteduda preliminary study the synthesis of Mg/Al HTlc by using artificial brine water as a model ofuddesalination wastewater. The objective of this research is to synthesis of Mg/Al HTlc fromudartificial brine water and its ability tested as a methyl orange (MO) adsorbents. The researchudinitiated with the synthesis of Mg/Al HTlc from artificial brine water. Characterization of theudMg/Al HTlc synthesized was confirmed through X-ray Diffraction and FT-IR Spectroscopy.udThe determination of optimum acidity, adsorption rate, and energy and capacity adsorptionudwere studied. The result showed that pH 3 was the optimum acidity for the adsorption of MOudon Mg/Al HTlc. MO was adsorbed at first order adsorption rate of 7.30 × 10-4 s-1 on the Mg/udAl HTlc, the adsorption capacity and adsorption energy were 4.36 × 10-5 mol g-1 and 27.54 kJudmol-1, respectively. From the preparatory process and the synthesis of Mg/Al HTlc by usingudartificial brine water to provide the information that the byproduct of desalination processesud(brine water) which are believed to be used for the synthesis of Mg / Al HTlc.udKeywords: wastewater, desalination, Mg/Al hydrotalcite-like, artificial brine water, adsorption,udmethyl orangeudud