In this study, potassium ferrocyanide, a nontoxic cyanide precursor in dark and diffuse reflection environment, was applied as reagent for the leaching of gold. The free ions could gradually release from ferrocyanide solution under ultraviolet light. Orthogonal experiments were performed gold ore to analyze effect pH, dosage, temperature system UV Response surface methodology (RSM) explore role...

The degree, mechanisms, and kinetics of phosphorus (P) sorption onto soils can have a significant influence on leaching losses of P from soil. The objectives of this study were to measure the impact of retention time (RT) on P sorption in a flow-through system intended to simulate downward movement of a P solution through two different riparian soils, and determine if isothermal titration calor...

In order to reduce CO2 emission, the sequestration using particulate steelmaking slag in water is world widely being studied through a Ca-carbonation method. As consequence, improved efficiency of Ca leaching from steelmaking-slag particles contributes significantly increasing amount fixed CO2. Therefore, this study, for purpose understanding particles, rate week acidic solution was analyzed by...

Layered hydroxides have shown superior catalytic activity for the electrocatalytic organic compound oxidation reaction. However, metal leaching can lead to uncontrollable structural phase transformation. Here, we report a Cr-Ni(OH) 2 electrocatalyst as model of pre-catalyst identification structure-performance relationship. The optimized delivered superb performances, i.e., low potential 1.38 V...

Phosphate rock has been considered as one of the most significant secondary rare-earth resource, and utilization rare earth elements (REEs) in phosphate attracted increasing attention. In this study, leaching kinetics REEs from a ore China was studied with variation temperature phosphoric acid concentration under conditions: ratio liquid to solid 12 mL/g, stirring speed 120 r/min, particle size...

Improving the existing knowledge on the enantioselectivity of processes affecting chiral pesticide enantiomers in the environment is necessary to maximize the efficacy and minimize the environmental impact caused by the use of pesticides with chiral properties. In this work, the enantioselectivity of the sorption, degradation, and leaching processes of the chiral fungicide metalaxyl in three sl...

In view of the problems high acid consumption, blockage ore-bearing beds caused by iron ion precipitation and a low leaching rate in conventional sandstone-type uranium deposit, author put forward “low-acid oxygen technology” research. order to further clarify mechanism ore with oxygen, oxidation ferrous under acidic conditions, influencing factors process, kinetic simulation oxidizing minerals...