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Table III Summary of experimental products

From: Secondary mineral formation associated with respiration of nontronite, NAu-1 by iron reducing bacteria

 

Flow-through Anaerobic Viable DIRB 7 days

Batch Anaerobic Viable DIRB 4 hours

Batch Anaerobic Viable DIRB 7 days

Batch Anaerobic Killed DIRB 7 days

Batch Aerobic Viable DIRB 7 days

Primary TEA

Fe(III)

Fe(III)

Fe(III)

N/A

O2

Extent of Fe reduction

7 % ± 1 %

0.1 %–0.2 %

4.4%–4.6%

0.3–1.2%

0.1–0.5%

Phases present

     

   Poorly crystalline smectite

Not found

Yes

Yes

Yes

Yes

   Amorphous aluminosilicate with increased Al/Si

Yes

Not found

Not found

Not found

Yes

Amorphous Si

Yes

Yes

Yes

Yes

Yes