Athanasios Kotsiopoulos, Geoffrey S. Hansford
A study was undertaken to investigate the dynamics of chalcopyrite bioleaching. The analysis revealed significant dynamics features because the chemical leaching rate of chalcopyrite does not vary monotonically with solution redox potential but undergoes a maximum followed by a minimum as potential increases. The analysis does account for reaction passivation, an effect that has consistently been reported in the literature. The existence and stability of steady states were determined as functions of the solution redox potential, reactor temperature, and biomass concentration. It was found that the rate of bioleaching increased with temperature at lower overall solution potentials with competitive rates observed at high ferric/ferrous ratios. Both high and low overall bioleaching rates were observed with increasing biomass concentration, indicating an upper concentration limit before passivation. These results indicate that the frequently observed inhibiting rates may simply be artifacts of the system dynamics rather than due to physical phenomena.
@article{7089e96e-17ec-4e4c-a240-310499fafba2,
title={An investigation into the dynamics of ch},
author={Athanasios Kotsiopoulos and Geoffrey S. Hansford},
year={2026},
language={en}
}TY - JOUR TI - An investigation into the dynamics of ch AU - Athanasios Kotsiopoulos AU - Geoffrey S. Hansford 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
Increasing volumes of waste printed circuit boards from obsolete electronic equipment posed escalating environmental risks and resource losses due to