Modified Humic Acid from Peat Soils with Magnetite (Ha-Fe3O4) by Using Sonochemical Technology for Gold Recovery

Modified Humic Acid from Peat Soils with Magnetite (Ha-Fe3O4) by Using Sonochemical Technology for Gold Recovery

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Sonochemical technology is a technology Foundation that involves ultrasonic waves in chemical reactions.In this study, humic acid isolated from peat soil has been successfully modified with magnetite (HA-Fe3O4) using sonochemical technology.Characterization of the physical and chemical properties of HA-Fe3O4 was carried out using FTIR, XRD, SEM and VSM.

HA-Fe3O4 was used for recovery of gold from simulated gold waste (HAuCl4).FTIR characterization showed that the interaction between HA and Fe3O4 was through hydrogen bonds.The crystal size of HA-Fe3O4 using the Debye-Scherrer equation based on the XRD diffractogram was 12.

4 nm.The saturation magnetization value of HA-Fe3O4 obtained was 52.80 emu/g.

Adsorption studies Bags - Reclosable Bags at various pH showed that HA-Fe3O4 has been successful in recovering of gold from simulated gold waste.The % recovery of gold was 99%.Gold recovery occurs through the adsorption process followed by reduction of Au (III) to Au(0).