Synthesis of Magnetite/Volcanic Soil Composite from West of Java and Its Adsorption Properties

Abstract

Adsorption is a cost-effective method that is successfully used to remove dyestuff from waste. However, this method requires filtering that takes a long time to separate the adsorbent medium. The Fe3O4/Volcanic soil composite was prepared to obtain adsorbates that can respond to the magnetic field so that the adsorbate is easily separated from the adsorbent medium after adsorption. The experimental results showed that physical mixing has adsorption capability better than composite. However, the physical mixing has weaker magnetic strength such that in the adsorbate separation process from the adsorbent medium can not be performed using a magnet. The composite has a homogeneous surface and can adsorb only one adsorbate molecule for each of its adsorbatet molecules as evidenced by the obtained Langmuir isotherm.