Viabilidade do tratamento de água residuária sintética têxtil em reator aeróbio de leito fixo

• Autor(a) principal: Rodrigues, Kelly
• Data de Publicação: 2010
• Outros Autores: Vidal, Carla Bastos, Aguiar Barbosa, Barbara Chaves, Pessoa-Wanderley, Carlos Ronald, Silveira Duarte, Iolanda Cristina [UNESP], Marinho, Gloria
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S1413-41522010000100012; http://hdl.handle.net/11449/39968
• topic: Aspergillus niger AN400; Continuous flow; Nutrients removal; Congo red

A continuous flow reactor, inoculated with Aspergillus niger AN400, with total volume of 5 L was operated at 29 degrees C, with eight hours of retention hydraulic time and 150 L.h(-1) of air flow rate in order to remove 25 mg.L(-1) of Congo Red dye from a synthetic wastewater. The feeding of the reactor, inoculated with Aspergillus niger AN400, was done in two phases: Phase I, with 0,5 g/L of saccharose and Phase II, with no saccharose. In Phase I, it was possible to verify efficiencies of organic matter and color (mg Pt.L(-1)) removal of 80 +/- 16% and 82 +/- 10%, respectively. In Phase II, the efficiency of organic matter removal was 75 +/- 13% and color removal was 89 +/- 7%. The higher removals of nutrients were achieved by the reactor in Phase I with 25% to ammonia, 90% to nitrite, 93% to nitrate and 21% to phosphorus. Apparently, the presence of saccharose improved the removal of the nutrients.