Corso, Carlos Renato [UNESP]Maganha de Almeida, Ana Carolina [UNESP]2013-09-302014-05-202013-09-302014-05-202009-02-01Microbial Ecology. New York: Springer, v. 57, n. 2, p. 384-390, 2009.0095-3628http://hdl.handle.net/11449/20195In this study Aspergillus oryzae was utilized to remove azo dyes from aqueous solution. Physically induced in its paramorphogenic form to produce standardized mycelial pellets, the non-autoclaved and autoclaved hyphae biomass was applied to biosorb the reactive dyes Procion Red HE7B (PR-HE7B) and Procion Violet H3R (PV-H3R) at different pH values (2.50, 4.50, and 6.50). The best pH for biosorption was 2.50, though the autoclaved demonstrated a higher biosorption capacity than the non-autoclaved pellets. The toxicity level was determined using the Trimmed Spearman-Karber method with Daphnia similis in all bioassays. The calculated toxicity of PV-H3R (LC(100) 62.50 mu g mL(-1)) was higher than to PR-HE7B (LC(100) 300.00 mu g mL(-1)), and its results brought out that the decrease of toxicity levels to zero might be accomplished by adding small quantities of pelletized A. oryzae to the solutions.384-390engArtigo10.1007/s00248-008-9459-7WOS:000262829500018Acesso restrito8876667942702235