A new bacterial strain mediating As oxidation in the Fe-rich biofilm naturally growing in a groundwater Fe treatment pilot unit.
A bacterial strain B2 that oxidizes arsenite into arsenate was isolated from the biofilm growing in a biological groundwater treatment process used for Fe removal. This strain is phylogenetically and morphologically different from the genus Leptothrix commonly encountered in biological iron oxidation processes. T-RFLP fingerprint of the biofilm revealed that this isolated strain B2 corresponds to the major population of the bacterial community in the biofilm. Therefore, it is probably one of the major contributors to arsenic removal in the treatment process.
Casiot
C
C
Laboratoire Hydrosciences Montpellier, UMR 5569, Université Montpellier 2, Place E. Bataillon, CCMSE, 34095 Montpellier Cedex 05, France. casiot@msem.univ-montp2.fr
Pedron
V
V
Bruneel
O
O
Duran
R
R
Personné
J C
JC
Grapin
G
G
Drakidès
C
C
Elbaz-Poulichet
F
F
D001152:Arsenicals / Q000737:chemistry*; D018441:Biofilms / Q000254:growth & development*; D004269:DNA, Bacterial / Q000032:analysis; D016946:Gram-Negative Aerobic Rods and Cocci / Q000145:classification / Q000235:genetics / Q000254:growth & development*; D007501:Iron / Q000032:analysis*; D010084:Oxidation-Reduction; D010802:Phylogeny; D010865:Pilot Projects; D014874:Water Pollutants, Chemical / Q000032:analysis*
D001152:Arsenicals; D004269:DNA, Bacterial; D014874:Water Pollutants, Chemical; D007501:Iron