Abstract

Muhammad Nurdin*, Ahmad Zaeni, Maulidiyah, Muhammad Natsir, Ardianto Bampe and Dwiprayogo Wibowo

DOI : http://dx.doi.org/10.13005/ojc/320545

Iron sand as the source of many important minerals is one of natural resources in Southeast Sulawesi. The iron sand minerals that contain TiO₂ has economic value and a number of application i.e. environmental protection, paint industries, sensor and photovoltaic. The extraction of TiO₂ has been done from pseudorutile (Fe₂Ti₃O₉) using dissolution of HCl 20% and the addition of Fe⁰ reductor to optimize the microwave and conventional process. The result showed the optimized yield value of TiO₂ and Fe₂O₃ are 74.49% and 80.35%, respectively. The power used effect of microwave -assisted to the extraction process was obtained decreasing of 81%, and the extraction time could be efficiency from 6 to 2 hours. The microwave extraction process can increase a yield of TiO₂ and significant decreasing the yield of Fe₂O₃ in a shorter time if compared to the conventional process.

iron sand; microwave; TiO2; Fe2O3; minerals; extraction

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