TY - JOUR
T1 - Reductive Dissolution of Jarosite by Acidiphilium cryptum in Presence of Chelating Agents and Dissolved Iron
AU - González, Ernesto
AU - Muñoz, Jesús Ángel
AU - Blázquez, María Luisa
AU - González, Felisa
AU - Ballester, Antonio
N1 - Publisher Copyright:
© 2017 Taylor & Francis Group, LLC.
PY - 2017/4/21
Y1 - 2017/4/21
N2 - The mutual effects of Acidiphilium cryptum, nine ligands and dissolved iron on jarosite dissolution were studied in a 23 full factorial experiment. Ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and oxalic acid were able to dissolve jarosite chemically, but bacterial action enhanced this dissolution; from 88 ± 1, 46 ± 0 and 36 ± 0 µmol/L d to 129 ± 3, 177 ± 5 and 106 ± 14 µmol/L d, respectively. Oxalate and NTA exhibited a synergistic effect with dissolved iron and bacteria that may be explained by a model in which iron complexes behave as redox mediators in the microbial respiration in which jarosite, a solid substrate, serves as terminal electron acceptor.
AB - The mutual effects of Acidiphilium cryptum, nine ligands and dissolved iron on jarosite dissolution were studied in a 23 full factorial experiment. Ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and oxalic acid were able to dissolve jarosite chemically, but bacterial action enhanced this dissolution; from 88 ± 1, 46 ± 0 and 36 ± 0 µmol/L d to 129 ± 3, 177 ± 5 and 106 ± 14 µmol/L d, respectively. Oxalate and NTA exhibited a synergistic effect with dissolved iron and bacteria that may be explained by a model in which iron complexes behave as redox mediators in the microbial respiration in which jarosite, a solid substrate, serves as terminal electron acceptor.
KW - Acidiphilium cryptum
KW - iron chelates
KW - jarosite
KW - ligand
KW - redox mediator
UR - http://www.scopus.com/inward/record.url?scp=84990914021&partnerID=8YFLogxK
U2 - 10.1080/01490451.2016.1197985
DO - 10.1080/01490451.2016.1197985
M3 - Article
AN - SCOPUS:84990914021
VL - 34
SP - 355
EP - 361
JO - Geomicrobiology Journal
JF - Geomicrobiology Journal
SN - 0149-0451
IS - 4
ER -