Author/Authors :
Gomes، L.H نويسنده USP/ESALQ – Department of Genetics – Yeast Laboratory, Av. P?dua Dias, 11, Piracicaba, SP 13418-900 Brazil , , Alexandrino، N نويسنده USP/ESALQ – Department of Genetics – Yeast Laboratory, Av. P?dua Dias, 11, Piracicaba, SP 13418-900 Brazil , , Roncato Duarte، K.M نويسنده SAA/APTA – Institute of Animal Science and Pastures, Rua Heitor Penteado, 56. Nova Odessa, SP 13460-000. Brazil , , Andrino، F.G نويسنده USP/ESALQ – Department of Genetics – Yeast Laboratory, Av. P?dua Dias, 11, Piracicaba, SP 13418-900 Brazil ,
Abstract :
Dead yeast cells are an abundant residue of the Brazilian ethanol industry and the industries still
don’t have a proper or desirable destiny for all these cells, which means tons of vitamins and proteins that have
not a major end. In the other hand, heavy metal residues are a problem, especially for leather industry, where
Brazil is also a great producer. In this work, dead yeast cells were used to evaluate cadmium biosorption
samples. Results have shown that dried dead yeast cells at 20 % (W/V) immobilized in Na-alginate beads 0.5
% can be an efficient alternative for the capture of cadmium. The average biosorption rate was 122.10 mg Cd/
g of dry biomass in comparison to the control using only the Na-alginate beads 0.5 % where the biosorption
rate achieved 57.29 mg Cd/g of dry biomass. This research opens wide opportunities to allies two major
residues created in Brazilian industries with a noble end for the industries it selves as for the environment.
