pH Threshold Impacts Chalcopyrite Bioleaching Dynamics for the Extreme Thermoacidophile Sulfurisphaera ohwakuensis
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DOI: 10.1002/bit.28945
Abstract: The extremely thermoacidophilic archaeon Sulfurisphaera ohwakuensis served as the basis for probing how initial pH (pHinitial) affects copper mobilization from chalcopyrite. Screening of small‐scale cultures (75 mL) at 75°C revealed that ~pH 3.0 was a maximal… read more here.
Keywords: sulfurisphaera ohwakuensis; chalcopyrite bioleaching; ohwakuensis; threshold impacts ... See more keywords
Effect of high sulfate concentrations on chalcopyrite bioleaching and molecular characterisation of the bioleaching microbial community
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DOI: 10.1016/j.hydromet.2016.07.006
Abstract: Abstract The efficiency of chalcopyrite bioleaching in the presence of a high sulfate background was evaluated using acidophilic microorganisms that were previously enriched from naturally salty and acidic environments and subsequently adapted to increasing sulfate… read more here.
Keywords: extraction; sulfate; sulfate concentrations; dna ... See more keywords
A comprehensive utilization of silver-bearing solid wastes in chalcopyrite bioleaching
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DOI: 10.1016/j.hydromet.2017.01.006
Abstract: Abstract In this work, two types of abandoned silver-bearing solid wastes of zinc leaching residue (ZLR) and firebrick were used as silver catalysis in chalcopyrite bioleaching by mixed moderately thermophilic culture. Bioleaching results showed that… read more here.
Keywords: solid wastes; bearing solid; chalcopyrite bioleaching; silver bearing ... See more keywords
An XAS study of silver species evolution in silver-catalysed chalcopyrite bioleaching
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DOI: 10.1016/j.hydromet.2019.04.023
Abstract: Abstract The catalysing effect of Ag+ or Ag nanoparticle (AgNp) on chalcopyrite (bio)leaching at 30 °C was studied in this paper, and the change of Ag speciation was investigated by Ag K-edge X-ray Absorption Near-edge Spectroscopy… read more here.
Keywords: chalcopyrite bioleaching; silver; chemical leaching; changed ag2s ... See more keywords
Comparative study on chalcopyrite bioleaching with assistance of different carbon materials by mixed moderate thermophiles
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DOI: 10.1016/s1003-6326(19)65036-3
Abstract: Abstract The catalysis of four carbon materials including artificial graphite (AG), carbon black (CB), activated carbon (AC) and carbon nanotube (CN) on chalcopyrite bioleaching by mixed moderate thermophiles was comparatively investigated. In AC and AG… read more here.
Keywords: mixed moderate; comparative study; chalcopyrite bioleaching; carbon materials ... See more keywords