Monovalent cation concentrations determine the types of Fe(III) hydroxysulfate precipitates formed in bioleach solutions

Gramp, Jonathan P.; Jones, F. Sandy; Bigham, Jerry M.; Tuovinen, Olli H.

doi:10.1016/j.hydromet.2008.05.019

Cited by 77 publications

(58 citation statements)

References 11 publications

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“…In contrast, Na + -mediated secondary iron minerals including both schwertmannite and sodium jarosite were not generated until the n(Fe)/n(Na) ratio reached a value of 0.1, at which the diffraction peak of schwertmannite was still present. Furthermore, the monovalent cations differed in terms of their jarosite-forming ability, specifically, K + > NH 4 + > Na + , which was consistent with previous reports by Gramp et al [28] and Bai et al [30]. This result indicated a difference in the abilities of these three ion species to catalyze the transformation of Fe into ferric hydroxysulfate minerals.…”

Section: Total Fe Deposition Efficiency During the Biogenic Formationsupporting

confidence: 90%

“…The As(III) adsorption efficiencies obtained herein were in accordance with the study of Liao et al [22], who reported that the amount of As(III) sorbed by schwertmannite (0.25 g/L) was only about 20% at Ph = 3.0, while the maximum As(III) removal (98%) occurs at about pH 7~9. The influence of the type and concentration of monovalent cations on the variety of secondary iron minerals and the critical mineralization value of schwertmannite and jarosite was previously studied [27][28][29][30]. However, a comparison of the heavy metal removal capacity of different biogenic secondary iron minerals mediated by monovalent cations has not yet been reported.…”

Section: Comparison Of the Cr(vi) And As(iii) Removal Efficiencymentioning

confidence: 99%

“…In an acidic system abundant with Fe and SO 4 2− , the total iron precipitation (secondary iron minerals formation) and phases of the secondary iron minerals mediated by A. ferrooxidans are mainly influenced by two factors; the nature of M and the Fe/M ratio. Notably, existing research indicates that a rise in the K + concentration favors jarosite formation but deters schwertmannite formation [27][28][29]. Bai et al [30] also studied the biosynthesis of secondary iron minerals in a K + , NH 4 + , and Na + coexistence system.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Monovalent Cations on the Efficiency of Ferrous Ion Oxidation, Total Iron Precipitation, and Adsorptive Removal of Cr(VI) and As(III) in Simulated Acid Mine Drainage with Inoculation of Acidithiobacillus ferrooxidans

Song

Wang

Yang

et al. 2018

Metals

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Acid mine drainage is highly acidic and contains large quantities of Fe and heavy metal elements. Thus, it is important to promote the transformation of Fe into secondary iron minerals that exhibit strong heavy-metal removal abilities. Using simulated acid mine drainage, this work analyzes the influence of monovalent cations (K + , NH 4 + , and Na + ) on the Fe 2+ oxidation and total Fe deposition efficiencies, as well as the phases of secondary iron minerals in an Acidithiobacillus ferrooxidans system. It also compares the Cr(VI) (K 2 Cr 2 O 7 ) and As(III) (As 2 O 3 ) removal efficiencies of different schwertmannites. The results indicated that high concentrations of monovalent cations (NH 4 + ≥ 320 mmol/L, and Na + ≥ 1600 mmol/L) inhibited the biological oxidation of Fe 2+ . Moreover, the mineralizing abilities of the three cations differed (K + > NH 4 + > Na + ), with cumulative Fe deposition efficiencies of 58.7%, 28.1%, and 18.6%, respectively [n(M) = 53.3 mmol/L, cultivation time = 96 h]. Additionally, at initial Cr(VI) and As(III) concentrations of 10 and 1 mg/L, respectively, the Cr(VI) and As(III) removal efficiencies exhibited by schwertmannites acquired by the three mineralization systems differed [n(Na) = 53.3 > n(NH 4 ) = 53.3 > n(K) = 0.8 mmol/L]. Overall, the analytical results suggested that the removal efficiency of toxic elements was mainly influenced by the apparent structure, particle size, and specific surface area of schwertmannite.

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Section: Total Fe Deposition Efficiency During the Biogenic Formationsupporting

confidence: 90%

Section: Comparison Of the Cr(vi) And As(iii) Removal Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Monovalent Cations on the Efficiency of Ferrous Ion Oxidation, Total Iron Precipitation, and Adsorptive Removal of Cr(VI) and As(III) in Simulated Acid Mine Drainage with Inoculation of Acidithiobacillus ferrooxidans

Song

Wang

Yang

et al. 2018

Metals

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“…Schwertmannite (approximate formula Fe III 8O8(OH)6SO4): Formation is favoured in solutions of pH 3-4 containing moderate to high ferric sulfate but low monovalent cation concentrations [46]. Various elements can be adsorbed from solution onto schwertmannite [47][48][49].…”

Section: Mineral Dissolution In Acidic Environmentsmentioning

confidence: 99%

“…Conditions such as these prevail in most laboratory-scale batch bioleaching tests because the microbial culture medium contains potassium and ammonium salts and the leaching is conducted at solution pH 1.5-2 [46,53].…”

Section: Mineral Dissolution In Acidic Environmentsmentioning

confidence: 99%

Review of Biohydrometallurgical Metals Extraction from Polymetallic Mineral Resources

Watling

2014

Minerals

140

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This review has as its underlying premise the need to become proficient in delivering a suite of element or metal products from polymetallic ores to avoid the predicted exhaustion of key metals in demand in technological societies. Many technologies, proven or still to be developed, will assist in meeting the demands of the next generation for trace and rare metals, potentially including the broader application of biohydrometallurgy for the extraction of multiple metals from low-grade and complex ores. Developed biotechnologies that could be applied are briefly reviewed and some of the difficulties to be overcome highlighted. Examples of the bioleaching of polymetallic mineral resources using different combinations of those technologies are described for polymetallic sulfide concentrates, low-grade sulfide and oxidised ores. Three areas for further research are: (i) the development of sophisticated continuous vat bioreactors with additional controls; (ii) in situ and in stope bioleaching and the need to solve problems associated with microbial activity in that scenario; and (iii) the exploitation of sulfur-oxidising microorganisms that, under specific anaerobic leaching conditions, reduce and solubilise refractory iron(III) or manganese(IV) compounds containing multiple elements. Finally, with the successful applications of stirred tank bioleaching to a polymetallic tailings dump and heap bioleaching to a polymetallic black schist ore, there is no reason why those proven technologies should not be more widely applied.

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Kinetics of ferrous iron oxidation by batch and continuous cultures of thermoacidophilic Archaea at extremely low pH of 1.1–1.3

Gonzalez-Contreras

Weijma

Buisman

2011

Appl Microbiol Biotechnol

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The extreme acid conditions required for scorodite (FeAsO4·2H2O) biomineralization (pH below 1.3) are suboptimal for growth of most thermoacidophilic Archaea. With the objective to develop a continuous process suitable for biomineral production, this research focuses on growth kinetics of thermoacidophilic Archaea at low pH conditions. Ferrous iron oxidation rates were determined in batch-cultures at pH 1.3 and a temperature of 75°C for Acidianus sulfidivorans, Metallosphaera prunea and a mixed Sulfolobus culture. Ferrous iron and CO2 in air were added as sole energy and carbon source. The highest growth rate (0.066 h−1) was found with the mixed Sulfolobus culture. Therefore, this culture was selected for further experiments. Growth was not stimulated by increase of the CO2 concentration or by addition of sulphur as an additional energy source. In a CSTR operated at the suboptimal pH of 1.1, the maximum specific growth rate of the mixed culture was 0.022 h−1, with ferrous iron oxidation rates of 1.5 g L−1 d−1. Compared to pH 1.3, growth rates were strongly reduced but the ferrous iron oxidation rate remained unaffected. Influent ferrous iron concentrations above 6 g L−1 caused instability of Fe2+ oxidation, probably due to product (Fe3+) inhibition. Ferric-containing, nano-sized precipitates of K-jarosite were found on the cell surface. Continuous cultivation stimulated the formation of an exopolysaccharide-like substance. This indicates that biofilm formation may provide a means of biomass retention. Our findings showed that stable continuous cultivation of a mixed iron-oxidizing culture is feasible at the extreme conditions required for continuous biomineral formation.Electronic supplementary materialThe online version of this article (doi:10.1007/s00253-011-3460-7) contains supplementary material, which is available to authorized users.

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Monovalent cation concentrations determine the types of Fe(III) hydroxysulfate precipitates formed in bioleach solutions

Cited by 77 publications

References 11 publications

Influence of Monovalent Cations on the Efficiency of Ferrous Ion Oxidation, Total Iron Precipitation, and Adsorptive Removal of Cr(VI) and As(III) in Simulated Acid Mine Drainage with Inoculation of Acidithiobacillus ferrooxidans

Influence of Monovalent Cations on the Efficiency of Ferrous Ion Oxidation, Total Iron Precipitation, and Adsorptive Removal of Cr(VI) and As(III) in Simulated Acid Mine Drainage with Inoculation of Acidithiobacillus ferrooxidans

Review of Biohydrometallurgical Metals Extraction from Polymetallic Mineral Resources

Kinetics of ferrous iron oxidation by batch and continuous cultures of thermoacidophilic Archaea at extremely low pH of 1.1–1.3

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