Dissolution kinetics of cerussite in an alternative leaching reagent for lead
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Qi-Cheng Feng
,
Yi-Jie Wang
Abstract
The dissolution kinetics of cerussite was investigated using methanesulphonic acid (MSA) as an alternative leaching reagent. The effects of particle size, stirring speed, acid concentration, and reaction temperature on the lead dissolution rate were determined. The dissolution process followed the kinetic law of the shrinking-core model, and a corresponding mixed control model was found suitable for representing the rate-controlling step. The mixed kinetic model comprised two stages: surface chemical reaction (283 K to 303 K) and diffusion through the product layer (303 K to 323 K). The activation energies of these sequential stages were 43.20 kJ mol−1 and 17.20 kJ mol−1, respectively. The corresponding dissolution kinetic equations are also presented to describe the dissolution reaction. The results indicated that methanesulphonic acid could be used as an effective leaching reagent for extracting lead from cerussite minerals.
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Artikel in diesem Heft
- One-step preparation of porous copper nanowires electrode for highly sensitive and stable amperometric detection of glyphosate
- Classification of wine distillates using multivariate statistical methods based on their direct GC-MS analysis
- Determination of cigarette papers moisture content by gas chromatography
- Flavonoids inhibiting glycation of bovine serum albumin: affinity–activity relationship
- Treatment of natural rubber latex serum waste by co-digestion with macroalgae, Chaetomorpha sp. and Ulva intestinalis, for sustainable production of biogas
- Physicochemical aspects of Trichosporon cutaneum CCY 30-5-10 adhesion and biofilm formation potential on cellophane
- Immobilisation of Aspergillus oryzae α-amylase and Aspergillus niger glucoamylase enzymes as cross-linked enzyme aggregates
- Dissolution kinetics of cerussite in an alternative leaching reagent for lead
- Preparation of quaternary pyridinium salts as possible proton conductors
- Stable UV absorption material synthesized by intercalation of squaric acid anion into layered double hydroxides
- Electrolytic preparation of nanosized Cu/Ni–Cu multilayered coatings
- Efficient solvent-free synthesis of bis(indolyl)methanes on SiO2 solid support under microwave irradiation
- Facile and direct synthesis of symmetrical acid anhydrides using a newly prepared powerful and efficient mixed reagent
- Practical synthesis of 2,3-dimethoxy-5-hydroxymethyl-6-methyl-1,4-benzoquinone
- Conversion of phenylacetonitrile in supercritical alcohols within a system containing small volume of water
