Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2006 by Universidad Católica de Valparaíso -- Chile
Vol. 9 No. 4, Issue of July 15, 2006
 

Table 1. Uptake of Pb ion by unmodified and modified Aspergillus niger biomass at pH 7. Mean of triplicate analysis; Pb concentration 100 mg l -1 ; biomass loading at 0.3 g; EDTA: ethylenediamine tetra acetic acid.


% metal uptake (unmodified biomass)

Modifying agents

% metal uptake (modified biomass)

% increase in metal uptake

28.18

Oxalic acid

92.84

69.65

 

Malic acid

48.11

41.23

 

EDTA

39.83

29.25


Supported by UNESCO / MIRCEN network