Environmental Engineering Reference
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Fig. 3 Growth response of KUMAs1 in nutrient ( a ) and minimal liquid medium ( b ) supplemented
with 2 mM As(III) and As(V); growth response of KUMAs1 under different pH in minimal
medium supplemented with 2 mM arsenate ( c ) and 2 mM arsenite ( d ); and growth response of
KUMAs1 under different temperature in minimal medium supplemented with 2 mM arsenate ( e )
and 2 mM arsenite ( f ). Data are the mean of three replications for each treatment regime with ±SD
( p = 0.05)
growth phase. The As(V) reduction was found to be cell mass dependent in this
strain, i.e. with increasing biomass As(V) reduction increased (Table 4 ). In the fi rst
24 h the reduction rate was slowed irrespective of initial concentration of As(V).
Growth response was found to be better at 0.21 mM and reduced ~33 % of As(V).
But at lower concentration (0.07 mM) reduction rate was very slow and it was up to
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