Biological iron(II) oxidation as pre-treatment to limestone neutralisation of acid water

Iron(II) should be oxidised to iron(III) before the neutralisation of acid water with limestone, otherwise the oxidation will occur downstream of the neutralisation plant with the formation of acid (reactions 1 and 2). This study aimed at investigating the effect of surface area of the medium that s...

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Veröffentlicht in:	Water science and technology 1998, Vol.38 (4-5), p.331-337
Hauptverfasser:	Marée, J.P., Dingemans, D., van Tonder, G.J., Mtimkulu, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Acid mine water Applied sciences Bacteria Biological and medical sciences Biological treatment of waters Biotechnology Environment and pollution Exact sciences and technology Fundamental and applied biological sciences. Psychology Industrial applications and implications. Economical aspects Industrial wastewaters Iron iron(II) oxidation Limestone limestone neutralisation Oxidation Oxidation rate Pollution Pretreatment Surface area Wastewaters Water treatment and pollution
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Zusammenfassung:	Iron(II) should be oxidised to iron(III) before the neutralisation of acid water with limestone, otherwise the oxidation will occur downstream of the neutralisation plant with the formation of acid (reactions 1 and 2). This study aimed at investigating the effect of surface area of the medium that supports bacterial growth on the rate of biological iron(II) oxidation. The study showed that the biological iron(II) oxidation rate is directly proportional to the square root of the medium specific surface area.
ISSN:	0273-1223 1996-9732
DOI:	10.1016/S0273-1223(98)00516-2