Kinetics of the precipitation of manganese and cobalt sulphides in the purification of a manganese sulphate electrolyte

Bryson, A.W.; Bijsterveld, C.H.

doi:10.1016/0304-386x(91)90079-2

Cited by 32 publications

(9 citation statements)

References 6 publications

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“…This pattern agrees with the previously reported works for the selective separation of Zn from Mn at pH 2 (Fattahi et al, 2016). Therefore, it would be wise to purify manganese sulfate solutions by selectively precipitating the other metals as metal-sulfides at lower pH values (Bryson and Bijsterveld, 1991).…”

Section: Leaching and Precipitationsupporting

confidence: 92%

Recovery of Manganese from Zinc Smelter Slag

Khosravi¹,

Fatahi²,

Siavoshi³

et al. 2020

American Journal of Engineering and Applied Sciences

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Using a software-based experiment design, the application of the leaching process for the extraction of manganese from Zinc Plant Slag (ZPS) was investigated. In this study, the effect of different parameters, i.e., H2SO4 concentration, pulp density, agitation rate, temperature and reaction time, was investigated. Response Surface Methodology (RSM) based on the Central Composite Design (CCD) has been implemented to consider the main parameters. A hydrometallurgical route to manganese silicate from spent zinc plant residue has been proposed in this investigation. Based on the investigation, Mn can be extracted from ZPS in sulfuric acid without any oxidant agents. The results showed that the optimum conditions of this study are an H2SO4 concentration of 2 mol/L and a solid/liquid ratio of 0.07 g/mL at 50°C for 150 min and an agitation speed of 1000 rpm. A manganese leaching efficiency higher than 83% is reached under these conditions, with a corresponding 22% iron, 23% lead, 68% zinc and 65% aluminum.

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Section: Leaching and Precipitationsupporting

confidence: 92%

Recovery of Manganese from Zinc Smelter Slag

Khosravi¹,

Fatahi²,

Siavoshi³

et al. 2020

American Journal of Engineering and Applied Sciences

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“…Most of the studies carried out on metal sulfide precipitation in relation to the removal of metal ions from solution have focused on metal sulfide precipitation kinetics and/or the selective precipitation of metal ions from solution [10][11][12][13] without investigating the effect of processing conditions on the nature of the resulting precipitates and their processing characteristics. Al-Tarazi [14] studied the effect of operating conditions on the particle rate processes occurring during metal sulfide precipitation processes under different regimes of pH, metal to sulfide molar ratios, and residence time using the mixed-suspension-mixed-product removal (MSMPR) method.…”

Section: Introductionmentioning

confidence: 99%

Effect of solution chemistry on particle characteristics during metal sulfide precipitation

Mokone

Hille

Lewis

2010

Journal of Colloid and Interface Science

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“…Having the solubility product defined as (6), it means that different sulfide concentrations (S 2potentials) are required to precipitate different metals. Several authors have found that the equilibrium in the metal sulfide reactions are ruled by the sulfide concentrations by means solubility product (Bryson and Bijsterveld 1991;Veeken et al 2003b). showed that at pH 6 different metals (Cd, Cu, Ni, Pb and Zn) had different sulfide curves expressed in the logarithm of the Sspecies (pS) curves when titrated and precipitated with sulfide.…”

Section: Solubility Productmentioning

confidence: 99%

Simultaneous Sulfate Reduction and Metal Precipitation in an Inverse Fluidized Bed Reactor

Gómez¹

2022

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The exploitation of minerals has contributed to the economic growth of many regions all over the world. In 1999, for example, Mexico produced 182202 tons of lead (Pb), 1485 tons of cadmium (Cd), 447948 tons of Zn and 402430 of copper (Cu) (www.inegi.gob.mx). Mining activities result in pollution problems due to the emissions of acid mine drainage (AMD) into the environment. AMD is one of the most widespread causes of pollution in the world (Gazea et al. 1996;. The principles governing the generation of AMD are relatively well understood.Upon exposure to oxygen and water and in the presence of oxidizing bacteria, pyrite and other sulfide minerals are oxidized to produce a leachate containing dissolved metals, sulfate and acidity . Agreements and legislationIn developed countries, like, Europe, USA and Australia, the source and amount of AMD generated as well as the damage caused to the environment are well described (GAO 1996; Harries 1997). In most developing countries these issues have not been well documented. Information on mining impact in these regions is limited and scattered widely in private and official files. The basic sources are reports produced by large mining firms, environmental organizations and government institutions which deal with environmental protection. As a consequence of this lack of information, the responsibility for the treatment of the wastes generated by the mining activities is also not clear. Small-scale and even some large-scale mining industries in developing countries seldom have their effluents properly treated before discharge into water bodies.More stringent legislation promoted by international agreements resulted in an increased interest in cost-effective technologies for the treatment of AMD. One example of these international agreements is the partnership for acid drainage remediation in Europe (PADRE), which promotes international best practice in the stewardship of waters and soils on European sites subject to the generation and migration of acidic drainage. Another example of these international agreements is the Commission for Environmental Cooperation (CEC) which is an international organization created by Canada, Mexico and the United States under the North American Agreement on Environmental Cooperation (NAAEC). This commission leads SRB can, in general, be divided into two major groups : those that oxidize the carbon source completely to CO 2 (i.e. Desulfobacter, Desulfococcus, Desulfosarcina, Desulfonema and Desulfobacterium) and those that oxidize the carbon source incompletely to acetate, CO 2 and H 2 (i.e. Desulfotomaculum, Desulfovibrio, Desulfomonas, Desulfobulbus and Termodesulfobacterium)Although some SRB are capable of fermentative and sulfidogenic growth on sugars and amino-acids, in anaerobic reactors and in the presence of sulfate, SRB are more likely to be involved in the last stages of mineralization rather than in the initial fermentative stage (Figure 1.1).

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Kinetics of the precipitation of manganese and cobalt sulphides in the purification of a manganese sulphate electrolyte

Cited by 32 publications

References 6 publications

Recovery of Manganese from Zinc Smelter Slag

Recovery of Manganese from Zinc Smelter Slag

Effect of solution chemistry on particle characteristics during metal sulfide precipitation

Simultaneous Sulfate Reduction and Metal Precipitation in an Inverse Fluidized Bed Reactor

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