Direct and Mn-Controlled Indirect Iron Oxidation by Leptothrix discophora SS-1 and Leptothrix cholodnii
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In: Geomicrobiology Journal, Vol. 32, No. 10, 26.11.2015, p. 934-943.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Direct and Mn-Controlled Indirect Iron Oxidation by Leptothrix discophora SS-1 and Leptothrix cholodnii
AU - Eggerichs, Tanja
AU - Otte, Tobias
AU - Opel, Oliver
AU - Ruck, Wolfgang
PY - 2015/11/26
Y1 - 2015/11/26
N2 - Direct biotic and homogeneous abiotic Fe(II) oxidation rates as well as oxidation rates of Fe(II) with MnOX were determined in laboratory experiments and compared with biotic Mn(II) oxidation rates. In groundwaters and thermal installation waters, parameters for both Fe(II) oxidation steps were studied and products of biotic and abiotic Fe(II) and Mn(II) oxidation were analyzed. Direct Fe(II) oxidation of active Leptothrix cholodnii cultures can reach first-order rates of up to 1.17 ± 0.90 h−1. Second-order rates of Fe(II) oxidation with biogenic, Leptothrix-cholodnii- and Leptothrix-discophora-SS-1-originating MnOX lead to rates comparable with those as obtained with abiotic H+-birnessite.
AB - Direct biotic and homogeneous abiotic Fe(II) oxidation rates as well as oxidation rates of Fe(II) with MnOX were determined in laboratory experiments and compared with biotic Mn(II) oxidation rates. In groundwaters and thermal installation waters, parameters for both Fe(II) oxidation steps were studied and products of biotic and abiotic Fe(II) and Mn(II) oxidation were analyzed. Direct Fe(II) oxidation of active Leptothrix cholodnii cultures can reach first-order rates of up to 1.17 ± 0.90 h−1. Second-order rates of Fe(II) oxidation with biogenic, Leptothrix-cholodnii- and Leptothrix-discophora-SS-1-originating MnOX lead to rates comparable with those as obtained with abiotic H+-birnessite.
KW - Sustainability Science
KW - Chemistry
KW - biogenic manganese oxides
KW - biogeochemical cycling
KW - iron-oxidizing bacteria
KW - Leptothrix
KW - manganese-oxidizing bacteria
UR - http://www.scopus.com/inward/record.url?scp=84943404635&partnerID=8YFLogxK
U2 - 10.1080/01490451.2015.1039671
DO - 10.1080/01490451.2015.1039671
M3 - Journal articles
VL - 32
SP - 934
EP - 943
JO - Geomicrobiology Journal
JF - Geomicrobiology Journal
SN - 0149-0451
IS - 10
ER -