Application of Humic Acid Isolated From Kalimatan Peat Soil Modifying Magnetite for Recovery of Gold

Maya Rahmayanti, Guliston Abdillah, Sri Juari Santosa, Sutarno Sutarno

Abstract

Humic acid modifying magnetite particles (Mag-HA) were developed for recovery of gold from chloride solution (HAuCl4). The Mag-HA particles were prepared by co-precipitation procedure with Fe(III) and Fe(II) chloride salts, sodium hydroxide, and humic acid. FTIR characterization for Mag-HA after modification indicated the presence of the specific absorption for functional groups of humic acid and Fe-O bonds, though with lower intensity. The Mag-HA particles exhibited a typical superparamagnetic characteristic with a saturation magnetization of 66.99 emu/g. The Mag-HA particles were applied for AuCl4- adsorption and results showed that the optimum adsorption of [AuCl4]- onto Mag-HA was found at pH 3. The adsorption kinetics can be described by a pseudo-second order equation and the adsorption isotherm of the Mag-HA particles agreed well with Langmuir adsorption equation. The maximum adsorbed amount of [AuCl4]- was 0.62 mmol/g and the XRD analysis confirms that the adsorption of Au(III) by Mag-HA was accompanied by the formation of elemental gold.

Keywords

Humic acid-modified magnetite; adsorption; [AuCl4]-

Full Text:

PDF

References

Aiken, G.R., Mcknight, D.M., Wershaw, R.L. 1985. Humic Substances In Soil, Sediment, and Water: Geochemistry, Isolation, and Characterization. John Wiley & Sons. New York.

Freundlich, H.M.F. 1906. Tiber die adsorption in losungen. Zeitschrift für Physikalische Chemie. 57: 385-490.

Huang, X., Wang Y., Liao X., Shi, B. 2010. Adsortive recovery of Au3+ from aqueous solutions using bayberry tannin-immobilized mesoporous silica. Journal of Hazardous Material. 183(1-3): 793-798.

Ho, Y.S. 2006. Review of second-order models for adsorption system. Journal of Hazardous Material. 136(3): 681-689.

Langmuir, I. 1916. The constitution and fundamental properties of solids and liquids. Journal of The American Chemical Society. 38(11): 2221-2295.

Liu, J.F., Zhao, Z.S., Jiang, G.B. 2008. Coating Fe3O4 magnetic nanoparticles with humic acid for high efficient removal of heavy metals in water. 42(18): 6949-6854.

Rahmayanti, M., Santosa, S.J., Sutarno. 2016a Mechanisms of Gold Recovery From Aqueous Solutions Using Gallic acid-modified Magnetite Particles Synthesized Via Reverse Co-precipitation Method. International Journal of ChemTech Research. 9(4): 446-452.

Rahmayanti, M., Santosa, S.J., Sutarno. 2016b. Comparative Study on the Adsorption of [AuCl4]– onto Salicylic Acid and Gallic Acid Modified Magnetite Particles. Indonesian Journal of Chemistry. 16(3): 329-337.

Santosa, S.J., Narsito, Ratna. 2007. Adsorption kinetics of Cu(II) species on silica gel in the precense of humic Acid. Journal of Ion Exchange. 18(4): 168-173.

Santosa, S.J., Sudiono, S., Siswanta, D., Kunarti, E.S., Dewi, S.R. 2011. Mechanism of AuCl4- removal from aqueous solution by means of peat soil humin. Adsorption Science & Technology. 29: 733-746.

Tan, K.H. 2014. Humic Matter in Soil and the Environment (Principles and Controversies). Tylor and Francis Group. Boca Raton, Florida.

DOI: https://doi.org/10.15294/jbat.v8i2.20392

Refbacks

  • There are currently no refbacks.


Bookmark and Share