Table 1. Biosorption and chemical precipitation of lead at different pH values.


 

Pb(II) (mmol/L)*

pH 4.0

pH 4.5

pH 5.0

Chemical precipitation (blank)

0.23 ± 0.01

0.21 ± 0.01

0.16 ± 0.01

Biosorption

0.002

0.004

0.005

*Standard deviations were not reported, in some cases, due to their negligible values.
Initial lead concentration: 0.23 ± 0.01 mmol/L.


Supported by UNESCO / MIRCEN network