ABDULLAH I. ABUFARA
This research investigates the feasibility of integrating bio-adsorbents into the gold cyanidation process. Since bio-adsorbents favor gold(III) chloride relative to gold(I) cyanide, this research will study the possibility of substituting cyanide ligands in gold(I) cyanide complex with chloride. For the purpose of this study, several quantum mechanical calculations on AuCl2−, AuCN2−, AuCl4−, and AuCN4 complexes are performed to investigate their stabilities and bonding nature. The study shows that Au-C bond in gold(I) and gold(III) complexes are stronger than Au-Cl bonds. Geometry optimization, frequency and thermodynamic calculations as well as natural bonding orbital (NBO) and local energy decomposition (LED) analyses have reached a similar conclusion. It is shown that the stability of Au-C bond is attributed to better orbital overlap between gold and carbon orbitals. Moreover, the occurrence of π back-bonding in Au-C bond also contributes to its strength.
@article{c9ef467e-574c-4823-8bb3-10861e4ba775,
title={Integration of Biosorption in Gold Cyani},
author={ABDULLAH I. ABUFARA},
year={2026},
language={en}
}TY - JOUR TI - Integration of Biosorption in Gold Cyani AU - ABDULLAH I. ABUFARA PY - 2026 LA - en ER -
Sadia Ilyas, Jae-chun Lee
The feasibility of biometallurgical processing for recovering heavy metals, precious metals, and rare earth elements from waste electrical and electro
This paper addresses the challenge of assessing the feasibility of wind power plant projects at sites with insufficient or no local historic wind data
Important advances in electrochemical engineering technology over the last three decades have fostered the development of a lternative methods to alle