Abstract
Leaching of copper converter slag of M/s Hindustan Copper Ltd, Ghatshila (Bihar, India) was carried out usingAspergillus niger culture filtrate. The effects of the duration of leaching, temperature, pulp density and the addition of hydrochloric acid were studied.A. niger culture filtrate solubilized metals from the converter slag at levels of 18.70% copper, 7.40% nickel and 4.00% cobalt. Addition of hydrochloric acid was found to improve copper, nickel and cobalt solubilization to 46.52, 27.90 and 37.96%, respectively. HPLC analysis of the fungal culture filtrate revealed the presence of succinic and citric acids. Therefore, leaching of the slag was also carried out with matching concentrations of these organic acids individually as well as with both mixed together. Results are discussed.
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References
Berry DR, Chmiel A, Alobaidi Z. 1977 Citric acid production byAspergillus niger. In: Smith JE, Pateman JA, eds.Genetics and Physiology of Aspergillus.The British Mycological Symposium Series No. 1. London: Academic Press; 410–414.
Berry DR, Henderson MEK, Taylor IF. 1963 The microbiology of rocks and weathered stones.J Soil Sci 14, 102–112.
Chemiel A. 1976 Kinetic studies on citric acid production byAspergillus niger. I. Phases of mycelium growth and product formation.Acta Microbiol Pol Ser B Microbiol Appl 7, 185–193.
Ehrlich HL. 1981Geomicrobiology. New York: Marcel Dekker.
Groudev SN, Genchev FN, Guidarjiev SS. 1978 Observations on the microflora in an industrial copper dump leaching operation. In: Murr LE, Torma AE, Brierley JA, eds.Metallurgical Applications of Bacterial Leaching and Related Microbiological Phenomena. New York: Academic Press; 253–273.
Henderson MEK, Duff RB. 1963 The release of metallic and silicate ions from minerals, rocks and soils by fungal activity.J Soil Sci 14, 236–246.
Krumbein WE. 1983Microbiol Geochemistry. Oxford: Blackwell Scientific Publications.
Manskaya SM, Drosdova TV. 1968Geochemistry of Organic Substances. New York: Pergamon.
Sukla LB, Panda SC, Jena PK. 1986 Recovery of cobalt, nickel and copper from converter slag through roasting with ammonium sulphate and sulphuric acid.Hydrometallurgy 16, 153–165.
Torma AE. 1981 Impact of biotechnology on metal extractions. In:Mineral Processing and Extractive Metallurgy Review. London: Gordon and Breach.
Trudinger PA, Walter MR, Ralph BJ. 1980Biochemistry of Ancient and Modern Environments. Canberra: Australian Academy of sciences.
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Sukla, L.B., Kar, R.N. & Panchanadikar, V. Leaching of copper converter slag withAspergillus niger culture filtrate. Biometals 5, 169–172 (1992). https://doi.org/10.1007/BF01061324
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DOI: https://doi.org/10.1007/BF01061324