Premium
Decrease in iron oxidizing activity of Thiobacillus ferrooxidans adsorbed on activated carbon
Author(s) -
Kai T.,
Takahashi T.,
Shirakawa Y.,
Kawabata Y.
Publication year - 1990
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260361105
Subject(s) - ferrous , activated carbon , chemistry , adsorption , leaching (pedology) , thiobacillus ferrooxidans , oxidizing agent , thiobacillus , bacteria , bioleaching , catalysis , carbon fibers , inorganic chemistry , nuclear chemistry , copper , organic chemistry , materials science , sulfur , biology , composite material , ecology , genetics , composite number , soil water
It was observed that about 90% of free‐swimming Thiobacillus ferrooxidans in 9 K medium was adsorbed on added activated carbon when the concentration of the cultivated bacteria reached about 4 × 10 13 cells m −3 . The oxidation of ferrous iron and the leaching of copper ore were carried out in shake flasks and in aerated columns. The rates of oxidation and leaching increased when bacteria adsorbed on activated carbon were used. However, the evaluation of the reaction rates by eliminating the catalytic effect of activated carbon showed that the contribution to the reaction by the adsorbed microorganism was very small.