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Title: Studies on biohydrometallurgical leaching of iron sulphide ore using <i style="">Thiobacillus ferrooxidans</i>
Authors: Hossain, Sk Masud
Das, Manas
Ibrahim, S H
Begum, K M M Sheriffa
Anantharaman, N
Issue Date: Jan-2004
Publisher: CSIR
Series/Report no.: C22B3/18
Abstract: Biohydrometallurgical leaching of iron sulphide ore in an aerobic batch system using bacteria <i style="">Thiobacillus ferrooxidans</i> has been studied for process parameters optimization. The maximum bioleaching of Fe<sup>2+</sup> is 79.88 and 79.10 per cent <i style="">(w/w)</i> for 25 and 30 kg/m<sup>3</sup> initial ferrous iron loading at optimum conditions. The optimum parameters are—time 172 h, pH 2.5 and temperature 35°C. The optimum glucose and nitrogen (as ammonium sulphate) concentration for maximum bacterial bioleaching is 3.0 and 0.30 per cent (<i style="">w/w</i>) respectively. The optimum shaking speed (rpm) is 60. 20 percent <i style="">(v/v)</i> and 7 days age-old suspension culture was used for the studies. The bacteria can tolerate upto 35 kg/m<sup>3</sup> initial ferrous iron concentration.
Description: 116-120
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.11(1) [January 2004]

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