Biodegradability and toxicity assessment of a real textile wastewater effluent treated by an optimized electrocoagulation process

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Diego R. Manenti (Autor) FEUP; Aparecido N. Módenes (Autor) Outra; Petrick A. Soares (Autor) FEUP; Rui A. R. Boaventura (Autor) FEUP; Soraya M. Palácio (Autor) Outra; Fernando H. Borba (Autor) Outra; Fernando R. Espinoza-Quiñones (Autor) Outra; Rosângela Bergamasco (Autor) Outra; Vítor J. P. Vilar (Autor) FEUP

Revista

Título: ENVIRONMENTAL TECHNOLOGY

Vol. 36 Nº 4

Páginas: 496-506

ISSN: 0959-3330

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 14 Citações

ISI Web of Science

Scopus - 22 Citações

INSPEC

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia do ambiente

CORDIS: Ciências Tecnológicas > Tecnologia > Tecnologia ambiental

Projetos Associados

LA 20 - PROJECTO ESTRATÉGICO - LA 20 - 2013-2014

Outras Informações

ID Authenticus: P-00A-2PD

DOI: 10.1080/09593330.2014.952676

Abstract (EN): In this work, the application of an iron electrode-based electrocoagulation (EC) process on the treatment of a real textile wastewater (RTW) was investigated. In order to perform an efficient integration of the EC process with a biological oxidation one, an enhancement in the biodegradability and low toxicity of final compounds was sought. Optimal values of EC reactor operation parameters (pH, current density and electrolysis time) were achieved by applying a full factorial 3(3) experimental design. Biodegradability and toxicity assays were performed on treated RTW samples obtained at the optimal values of: pH of the solution (7.0), current density (142.9 A m(-2)) and different electrolysis times. As response variables for the biodegradability and toxicity assessment, the Zahn-Wellens test (D-t), the ratio values of dissolved organic carbon (DOC) relative to low-molecular-weight carboxylates anions (LMCA) and lethal concentration 50 (LC50) were used. According to the D-t, the DOC/LMCA ratio and LC50, an electrolysis time of 15 min along with the optimal values of pH and current density were suggested as suitable for a next stage of treatment based on a biological oxidation process.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11