Recovery of gold(III) from an aqueous solution onto a durio zibethinus husk

Mahani A Z Abidin, Aishah A. Jalil, Sugeng Triwahyono, S. Hazirah Adam, Kamarudin Nur Hidayatul Nazirah

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The recovery of gold(III) ions from an aqueous solution onto a durio zibethinus husk (DZH) was examined after varying pH, contact time, adsorbent dosage, initial Au(III) concentration, and temperature. The functional groups of DZH were analyzed by FTIR and Au(III) recovery onto DZH was verified by FESEM-EDX and XRD analysis. Adsorption equilibrium isotherms and kinetics of the DZH were studied using Freundlich and Langmuir models, as well as pseudo first-order, second-order kinetic and intraparticle diffusion equations. The experimental data obtained with DZH fitted best to the Langmuir isotherm model and exhibited a maximum adsorption capacity (qmax) of 1724μmolg-1. The data followed the pseudo second-order equation. The activation energy of the adsorption (Ea) was estimated to be 38.5kJmol-1. Thermodynamic parameters, such as changes in enthalpy, entropy and Gibbs free energy, showed that the adsorption is exothermic, spontaneous at low temperature, and is a chemisorption process. These results indicate that DZH adsorbs efficiently and could be used as a low-cost alternative for the adsorption of Au(III) in wastewater treatment.

Original languageEnglish
Pages (from-to)124-131
Number of pages8
JournalBiochemical Engineering Journal
Volume54
Issue number2
DOIs
Publication statusPublished - 15 Apr 2011
Externally publishedYes

Fingerprint

Bombacaceae
Gold
Adsorption
Recovery
Isotherms
Kinetics
Gibbs free energy
Chemisorption
Temperature
Wastewater treatment
Adsorbents
Functional groups
Entropy
Fourier Transform Infrared Spectroscopy
Energy dispersive spectroscopy
Waste Water
Enthalpy
Thermodynamics
Activation energy
Ions

Keywords

  • Durio zibethinus husk
  • Gold(III)
  • Recovery

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering
  • Environmental Engineering

Cite this

Recovery of gold(III) from an aqueous solution onto a durio zibethinus husk. / Abidin, Mahani A Z; Jalil, Aishah A.; Triwahyono, Sugeng; Adam, S. Hazirah; Nur Hidayatul Nazirah, Kamarudin.

In: Biochemical Engineering Journal, Vol. 54, No. 2, 15.04.2011, p. 124-131.

Research output: Contribution to journalArticle

Abidin, Mahani A Z ; Jalil, Aishah A. ; Triwahyono, Sugeng ; Adam, S. Hazirah ; Nur Hidayatul Nazirah, Kamarudin. / Recovery of gold(III) from an aqueous solution onto a durio zibethinus husk. In: Biochemical Engineering Journal. 2011 ; Vol. 54, No. 2. pp. 124-131.
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