From: Decoupling of arsenic and iron release from ferrihydrite suspension under reducing conditions: a biogeochemical model
Aqueous concentrations
With FR bacteria
Without bacteria
As (μM)
120
40
molar As(III)/As (%)
97
0
Fe (μM)
466
36
PO4 (μM)
153
252
Ca (μM)
735
638
Mg (μM)
506
477
Na (mM)
41.3
NH4 (mM)
2.8
3.9
HCO3- (mM)
18.7
12.3
Acetate (mM)
8.5
18.6