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IJCT Vol.11(1) [January 2004] >


Title: Studies on biohydrometallurgical leaching of iron sulphide ore using Thiobacillus ferrooxidans
Authors: Hossain, Sk Masud
Das, Manas
Ibrahim, S H
Begum, K M M Sheriffa
Anantharaman, N
Issue Date: Jan-2004
Publisher: CSIR
IPC CodeC22B3/18
Abstract: Biohydrometallurgical leaching of iron sulphide ore in an aerobic batch system using bacteria Thiobacillus ferrooxidans has been studied for process parameters optimization. The maximum bioleaching of Fe2+ is 79.88 and 79.10 per cent (w/w) for 25 and 30 kg/m3 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 (w/w) respectively. The optimum shaking speed (rpm) is 60. 20 percent (v/v) and 7 days age-old suspension culture was used for the studies. The bacteria can tolerate upto 35 kg/m3 initial ferrous iron concentration.
Page(s): 116-120
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.11(1) [January 2004]

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