Potential utilization of fungi in biomining as biological engines for the alteration of sulfide and carbon matrices

G Hein, H Mahandra, A Ghahreman - Reviews in Environmental Science …, 2023 - Springer
An increasing attention to biomining technologies has emerged in the mining industry as a
result of stricter environmental regulations and economic concerns to process ores with …

Significance of Fe contents on the surface of the gold ores in gold leaching by thiourea and ethylene thiourea

K Sasaki, I Suyama, Y Aoki, KT Konadu… - Minerals …, 2023 - Elsevier
Environmentally friendly ligands, alternatives to cyanide, are desired to extract gold for the
sustainable hydrometallurgy of gold. Leaching characteristics of gold were examined using …

Laccase-mediator system for enzymatic degradation of carbonaceous matter in the sequential pretreatment of double refractory gold ore from Syama mine, Mali

R Sakai, DM Mendoza, KT Konadu, Y Aoki, T Hirajima… - Hydrometallurgy, 2022 - Elsevier
The sequential bio-treatment of refractory carbonaceous gold ore is a promising solution to
recover gold effectively by environmentally friendly technology, which includes bio-oxidation …

Degradation of powder activated carbon by laccase-mediator system: Model experiments for the improvement of gold recovery from carbonaceous gold ore

DM Mendoza, H Ichinose, KT Konadu… - Journal of Environmental …, 2021 - Elsevier
Several efforts are made to find various green alternatives for carbonaceous matter (CM)
degradation in carbonaceous gold ores. The deleterious effect of CM is observed during …

Sulfidic gold ore leaching by cysteine in the presence of Na2SO3

KT Konadu, K Sasaki - Hydrometallurgy, 2023 - Elsevier
Abstract Cysteine (CSH: C 3 H 7 NO 2 S) was used to leach gold and silver from sulfidic gold
ore with a grade of 29 g/t Au and 28 g/t Ag.< 20% of the gold was enclosed in …

[HTML][HTML] Defining the applicable pathway of laccase pre-treatment in the bio-mineral processing of double refractory gold ores based on carbonaceous matter …

DM Mendoza, H Ichinose, R Sakai, KT Konadu… - Journal of …, 2024 - Elsevier
Enzymes application in mineral processing is a novel alternative to oxidize carbonaceous
matter in double refractory gold ores (DRGOs) and reduce Au (CN) 2-adsorption during …

Trace Analysis of Au in Carbonaceous Gold Ores by Inductively Coupled Plasma Optical Emission Spectrometry and Mass Spectrometry

I Suyama, DM Mendoza, T Kaneta… - MATERIALS …, 2024 - jstage.jst.go.jp
Trace analysis for Au contents in three different gold ores was investigated from aspects of
acid digestion conditions of ore samples, the analytical techniques of Au determination, and …

Inhibition of carbonaceous matters adsorbing gold using a green and efficient chlorinating agent TCCA: Inhibition behavior, kinetics and isotherms, inhibition …

H Niu, H Yang, R Zhao, L Tong, P Cristiani - Colloids and Surfaces A …, 2023 - Elsevier
Refractory carbonaceous gold ore contains carbonaceous matters that seriously interfere
with gold leaching. Therefore, this paper presented an in-depth experimental investigation …

Significance of acid washing after biooxidation of sulfides in sequential biotreatment of double refractory gold ore from the syama mine, mali

Cindy, R Sakai, DM Mendoza, KT Konadu, K Sasaki - Minerals, 2021 - mdpi.com
Environmentally friendly pretreatment of double refractory gold ores (DRGO) to improve gold
recovery without emitting pollutant gas is challenging. Sequential biotreatment, including …