Temperature Effects on the Iron Oxidation Kinetics of a Leptospirillum ferriphilum Dominated Culture at pH Below One

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In this study, ferrous iron oxidation rates of a Leptospirillum ferriphilum dominated culture were determined over the temperature range of 2-50oC at pH below one. The results show that at pH 0.9 the culture oxidizes iron within the temperature range of 10°C to 45°C. Using the Arrhenius equation, an Ea value of 89.9 ± 6.75 kJ/mol was calculated. From the data fitted to Ratkowsky Equation, the optimum, minimum and maximum temperatures were 35 ± 1.5, 9.96 ± 1.72 and 42.93 ± 0.64 °C for this culture, respectively. The redox potential of the solution becomes more positive, which was the maximum (650-700 mV) at temperatures between 19-40 oC due to completing biological oxidation and increasing in ferric iron concentration.

Info:

Periodical:

Advanced Materials Research (Volumes 20-21)

Edited by:

Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher

Pages:

465-468

Citation:

B. Özkaya et al., "Temperature Effects on the Iron Oxidation Kinetics of a Leptospirillum ferriphilum Dominated Culture at pH Below One", Advanced Materials Research, Vols. 20-21, pp. 465-468, 2007

Online since:

July 2007

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$38.00

[1] D.E. Rawlings and D.B. Johnson (Eds. ): Biomining. Springer-Verlag Berlin Heidelberg, ISBN 978-3-540-34909-9 (2007).

[2] P.H. -M. Kinnunen and J.A. Puhakka: Biotechnol. Bioeng. Vol. 85 (2004), p.697.

[3] Anon. 1992, American Public Health Association. In: Greenberg AE, Clesceri LS, Eaton AD, editors. 18 th ed. Washington, DC: American Public Health Association, (1992).

[4] M. Nemati, S.T.L. Harrison, G.S. Hansford and C. Webb: Biochem. Eng. J. Vol. 1 (1998), p.171.

[5] P.D. Franzmann, C.M. Haddad, R.B. Hawkes, W.J. Robertson and J.J. Plumb: Min. Eng. Vol. 18 (2005), p.1304.

[6] D.A. Ratkowsky, J. Olley, T.A. McMeekin and A. Ball: J. Bacteriol. Vol. 154 (1983), p.1222.

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