APPLICATION OF ULTRASONIC TECHNOLOGY ON THE ADSORPTION OF Fe (II) AND Mg (II) METAL IONS USING KAOLIN AS ADSORBENTS

Abstract

Kaolin is a mineral found in sedimentary rocks known as claystone. Ultrasonic is used to accelerate the adsorption of metal ions on the adsorbent. This study aims to see the effect of the optimal temperature and time needed by the ultrasonic device to absorb metal ions in wastewater. Choline was activated using HCl, then modified with CTAB and ABS surfactants. Organokaolin modified with ABS was used to adsorb Fe (II) metal ions at 50℃, and those modified with CTAB were used to adsorb Mg (II) metal at 70℃, and each time varied 10,20,30,40,50 minutes. From this study, the highest value of efficiency in absorbing Fe metal ions was 92.97% at 50 minutes of irradiation, and for the absorption of Mg metal ions was 95.69% at 50 minutes of irradiation. This shows that the longer the irradiation time used, the better the absorption efficiency obtained. FTIR test results showed the presence of groups, O-H, C-H, and O=C=O. The results of the SEM test showed that the voids that were empty before adsorption were filled with metal ions during the conditions after adsorption