Removal of cadmium and lead from a mining effluent in Ticapampa- Recuay, Ancash using Serratia marcescens M8a-2T dry biomass

• Autores: Alegre Quijano, Antori, Gutiérrez Moreno, Susana M.
• Formato: artículo
• Fecha de Publicación: 2021
• Institución: Universidad Nacional Agraria La Molina
• Repositorio: Revistas - Universidad Nacional Agraria La Molina
• Lenguaje: español
• OAI Identifier: oai:revistas.lamolina.edu.pe:article/1788
• Enlace del recurso: https://revistas.lamolina.edu.pe/index.php/acu/article/view/1788
• Nivel de acceso: acceso abierto
• Materia: Bioadsorción; metales pesados; Metodología de Superficie de Respuesta (RSM); diseño de Box- Behnken; Serratia marcescens; Biosorption; heavy metals; Response Surface Methodology (RSM); Box–Behnken design

The Ticapampa mining effluent was treated with Serratia marcescens M8a-2T dry biomass to remove polutants such as cadmium and lead. Response Surface Methodology (RSM) and Box–Behnken design matrix have been applied to optimizate the process. The influence of pH (2, 3 and 4), biomass concentration (1, 2 and 3 mg/mL) and contact time (15, 30 and 45 minutes) were evaluated. The maximum removal percentage for cadmium was 97.11% at pH 4, 2 mg/mL of biomass during 45 minutes; and for lead was 98.63% at pH 4, 1 mg/mL of biomass during 30 minutes. The high levels of significance (p <0.05) of the regression and ANOVA models indicated pH as the most influencer factor. The Response Surface Methodology was a very important tool to optimize bioremediation process.