The objective of this research is to synthesis of Mg/Al hydrotalcite-like (Mg/Al HTlc) from brine water and its
application as a methyl orange (MO) removal. The research initiated with the synthesis of Mg/Al HTlc from brine
water, which is well known as the desalination process wastewater. Characterization of the Mg/Al HTlc synthesized
was confirmed through X-ray Diffraction and FT-IR Spectroscopy. The determination of optimum acidity, adsorption
rate, and energy and capacity adsorption were studied. The result showed that pH 4 was the optimum acidity for the
adsorption of MO on Mg/Al HTlc. MO was adsorbed at pseudo-second order adsorption rate of 1.03 × 105 g mol-1 min-1
on the Mg/Al HTlc. The adsorption data fitted well into the linearly transformed Freundlich equation.
Keywords: adsorption, brine water, methyl orange, Mg/Al hydrotalcite-lik
