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@article{1210773, author = {Mandl, Martin and Pakostová, Eva and Poskerová, Lenka}, article_location = {Amsterdam}, article_number = {December}, doi = {http://dx.doi.org/10.1016/j.hydromet.2014.09.009}, keywords = {Acidithiobacillus ferrooxidans; aeration; iron-oxidizing bacteria; oxygen limitation; sulfur-oxidizing bacteria; volumetric oxygen transfer coefficient.}, language = {eng}, issn = {0304-386X}, journal = {Hydrometallurgy}, title = {Critical values of the volumetric oxygen transfer coefficient and oxygen concentration that prevent oxygen limitation in ferrous iron and elemental sulfur oxidation by Acidithiobacillus ferrooxidans}, url = {http://www.researchgate.net/profile/Martin_Mandl/publications}, volume = {150}, year = {2014} }
TY - JOUR ID - 1210773 AU - Mandl, Martin - Pakostová, Eva - Poskerová, Lenka PY - 2014 TI - Critical values of the volumetric oxygen transfer coefficient and oxygen concentration that prevent oxygen limitation in ferrous iron and elemental sulfur oxidation by Acidithiobacillus ferrooxidans JF - Hydrometallurgy VL - 150 IS - December SP - 276-280 EP - 276-280 PB - Elsevier SN - 0304386X KW - Acidithiobacillus ferrooxidans KW - aeration KW - iron-oxidizing bacteria KW - oxygen limitation KW - sulfur-oxidizing bacteria KW - volumetric oxygen transfer coefficient. UR - http://www.researchgate.net/profile/Martin_Mandl/publications L2 - http://www.researchgate.net/profile/Martin_Mandl/publications N2 - Biochemical and biotechnological aspects of aeration conditions in iron- and sulfur-oxidizing Acidithiobacillus ferrooxidans cultures were studied. The critical values of volumetric oxygen transfer coefficient, (kLa)crit, and oxygen concentration, Ccrit, were used to define the conditions necessary for minimum aeration and to eliminate potential oxygen limitation during substrate oxidation by themodel bioleaching culture. The Michaelis constants for oxygenwere 1.07 and 0.61 umol O2/l for the oxidation of ferrous iron and elemental sulfur, respectively. The Ccrit values, below which oxygen limitation may occur, were 6.250 and 3.125 umol O2/l, determined in respirometric experiments for the oxidation of ferrous iron and elemental sulfur, respectively. The rates of iron and sulfur oxidation were also determined at the Ccrit values by measuring the formation of ferric iron and protons in the corresponding cell suspensions. Neither iron nor sulfur oxidation was limited by oxygen at Ccrit. The (kLa)crit values required to maintain oxygen-unlimited oxidation of ferrous iron and elemental sulfur were 7.70 and 4.88/h, respectively. ER -
MANDL, Martin, Eva PAKOSTOVÁ a Lenka POSKEROVÁ. Critical values of the volumetric oxygen transfer coefficient and oxygen concentration that prevent oxygen limitation in ferrous iron and elemental sulfur oxidation by Acidithiobacillus ferrooxidans. \textit{Hydrometallurgy}. Amsterdam: Elsevier, 2014, roč.~150, December, s.~276-280. ISSN~0304-386X. Dostupné z: https://dx.doi.org/10.1016/j.hydromet.2014.09.009.
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