3.2. Cr(VI) removal in batch cultures
In all control experiments, cell free PYG supplemented with
Cr(VI) showed non-significative changes in Cr(VI) concentrations
during the 32
◦
C, 200 rpm and 3 days incubation. This is a confirmation of the inexistence of any possible abiotic Cr(VI) reduction,
due to the presence of organic matter in the culture medium.