28 research outputs found
LEACHING OF MALACHITE ORE IN AMMONIUM SULFATE SOLUTIONS AND PRODUCTION OF COPPER OXIDE
Applicability of Moringa oleifera Lam. pie as an adsorbent for removal of heavy metals from waters
Dissolution and biodurability: Important parameters needed for risk assessment of nanomaterials
The role of nanomaterials as effective adsorbents and their applications in wastewater treatment
Effective biosorption of Allura red dye from aqueous solutions by the dried-lichen ( Pseudoevernia furfuracea
Kinetics of malachite leaching in alkaline glycine solutions
Aqueous alkaline glycine solutions present technical advantages over acidic solutions for leaching oxidised copper minerals hosted in carbonate mineral matrix phases. In this study, the leaching and kinetics of malachite in alkaline glycine solutions have been studied. The influence of process variables such as glycine concentration, temperature, particle size and stirring speed on leaching kinetics was evaluated. The results show that temperature has a significant effect on copper dissolution rates. A temperature increase from 25°C to 50°C resulted in a copper extraction of 32.3–83.6% respectively over 5 min. Increasing glycine concentration and reducing particle size led to an increase in copper extraction rates while no significant influence was observed with stirring speeds above 350 rpm