@article{fdi:010046321,
  title = {{K}inetic control on the formation of tooeleite, schwertmannite and jarosite by {A}cidithiobacillus ferrooxidans strains in an {A}s({III})-rich acid mine water},
  author = {{E}gal, {M}. and {C}asiot, {C}. and {M}orin, {G}. and {P}armentier, {M}. and {B}runeel, {O}dile and {L}ebrun, {S}. and {E}lbaz-{P}oulichet, {F}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}rapping of arsenic({III}) by {F}e({III})-minerals during microbial {F}e({II}) oxidation was investigated in cultures of various {A}cidithiobacillus ferrooxidans strains. {E}ach strain, known to be unable to oxidize {A}s({III}), was inoculated in sterilized acid mine drainage water containing hundreds of mg per litre of {F}e({II}) and tens mg per litre levels of arsenic, mainly in the {A}s({III}) form. {I}ron and arsenic speciation were followed in the dissolved phase, and microbial {F}e({II}) oxidation products were identified using {XRD} and {EXAFS} spectroscopy. {A}rsenite was found to coprecipitate with amorphous phases, with schwertmannite, and/or to be incorporated in tooeleite ({F}e-6({A}s{O}3)(4){SO}4({OH})(4)center dot {H}2{O})-{P}recipitation of {A}s-poor jarosite also occurred at the end of the experiments. {T}he nature, proportion and sequence of the biominerals differed from one strain to another and as a function of the inoculum size. {T}his appeared to be related to the kinetic of {F}e precipitation during the early stage of incubation. {A}s({III})-rich schwertmannite formed when the lag period was lower than one day, while tooeleite formed during extended (>= 9 days) lag period. {A}fter more than 15 days, jarosite precipitated upon complete {F}e({II}) oxidation, in agreement with the highest thermodynamic stability of this phase. {T}his mineral did not trap significant amounts of {A}s({III}). {N}either tooeleite nor {A}s({III})-rich schwertmannite formed without bacteria in the {AMD} water used in this study.},
  keywords = {{A}cidithiobacillus ferrooxidans ; {A}cid mine drainage ({AMD}) ; {A}rsenic ; {T}ooeleite},
  booktitle = {},
  journal = {{C}hemical {G}eology},
  volume = {265},
  numero = {3-4},
  pages = {432--441},
  ISSN = {0009-2541},
  year = {2009},
  DOI = {10.1016/j.chemgeo.2009.05.008},
  URL = {https://www.documentation.ird.fr/hor/fdi:010046321},
}