Skip to main content
. Author manuscript; available in PMC: 2015 Aug 11.
Published in final edited form as: Biotechnol Bioeng. 2010 Apr 1;105(5):909–917. doi: 10.1002/bit.22611

Table 1.

Summary of As(III) oxidation linked to denitrification in bioreactor R1

Parameters Units Period
II III IV V
As(III) volumetric load mg As/Lr·d 178.9±34.8 259.2±52.8 242.9±14.8
As(III) removal efficiency % 88.38±7.2 92.71±10.6 98.58±1.8
As(III) removed mM 2.52±0.38 3.56±0.57 3.55±0.22
As(V) formed mM 2.39±0.31 3.32±0.48 3.33±0.27
As(V) formed /As(III) removed mol/mol 0.90±0.15 0.95±0.15 0.94±0.06
NO3 removed mM 2.36±0.53 2.63±0.57 1.18±0.31 2.56±0.41
Corrected NO3 removed mM 1.24±0.49 1.45±0.57 1.38±0.41
As(III) removed/corrected* NO3 removed mol/mol 2.49±0.98 2.75±0.90 2.83±0.74
As(V) formed/corrected* NO3 removed mol/mol 2.32±0.95 2.50±0.15 2.65±0.71
*

Corrected for endogenous nitrate consumption measured in period IV