The triphenylmethane dyes Malachite Green (MG) and Crystal Violet (CV) are cationic dyes and mix with domestic wastewater when dumped; increasing, among others, the chemical and biological demand of oxygen and can cause acute toxicity at different trophic levels. Promoting the removal (decolorization) of MG and CV, and laccase activity (54.8 ± 8.9 and 30.6 ± 2.9 UL-1 respectively) by using P. ostreatus viable biomass needed parameters such as pH (4.5 and 6.0), temperature (25 to 30 °C), stirring speed (120 rpm), percentage of inoculum (2% v/v), and dye concentration (20 and 10 mg L-1). In adsorption studies, it was showed that an acidic pH favors the adsorption of both dyes and the model of pseudo-second order describes best the phenomenon of adsorption. Finally, the germination index (GI), using Lactuca sativa seeds for the initial dyes solutions, was <50%; demonstrating its high phytotoxic effect. When dye solutions were treated with viable biomass, the GI increased, leaving open the possibility to performing future research to determine if the aqueous solutions, post-treated with P. ostreatus, could be used in treatments that generate less toxic water which could be used in processes that do not require potable water.

• Autores: Morales-Álvarez, Edwin David; Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias. Pontificia Universidad Javeriana. Bogotá, D.C., Colombia. Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Caldas. Manizales, Caldas, Colombia.; Rivera-Hoyos, Claudia Marcela; Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias. Pontificia Universidad Javeriana. Bogotá, D.C., Colombia.; González-Ogliastri, Natalia; Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias. Pontificia Universidad Javeriana. Bogotá, D.C., Colombia.; Rodríguez-Vázquez, Refugio; Departamento de Biotecnología y Bioingeniería, Centro de Investigaciones y Estudios Avanzados del Instituto Politécnico Nacional. México D.F., México.; Poutou-Piñales, Raúl Alberto; Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias. Pontificia Universidad Javeriana. Bogotá, D.C., Colombia.; Daza, Carlos Enrique; Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia. Bogotá, D.C., Colombia.; Pedroza Rodriguez, Aura Marina; Grupo de Biotecnología Ambiental e Industrial (GBAI), Departamento de Microbiología, Facultad de Ciencias. Pontificia Universidad Javeriana. Bogotá, D.C., Colombia.
• Tipo de recurso: Article of journal
• Fecha de publicación: 2016
• Institución: Pontificia Universidad Javeriana
• Repositorio: Repositorio Universidad Javeriana
• Idioma: eng
• OAI Identifier: oai:repository.javeriana.edu.co:10554/32006
• Acceso en línea: http://revistas.javeriana.edu.co/index.php/scientarium/article/view/16486; http://hdl.handle.net/10554/32006
• Palabra clave: Applied Microbiology, Applied Micology; Pleurotus ostreatus; Malachite Green; Crystal Violet; decolorization and adsorption.
• Rights: openAccess
• License: Atribución-NoComercial-SinDerivadas 4.0 Internacional