Treatment of waters containing the thiocarbamate herbicide molinate through an adsorption/bio-regeneration system using a low-cost adsorbent

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Débora Carvalho (Autor) Outra; Adélio Mendes (Autor) FEUP; Fernão D Magalhães (Autor) FEUP; Olga C. Nunes (Autor) FEUP

Revista

Título: Water, Air, and Soil Pollution

Vol. 207

Páginas: 289-298

ISSN: 0049-6979

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 7 Citações

ISI Web of Science

Scopus - 7 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Físicas > Química > Química aplicada > Química ambiental

FOS: Ciências exactas e naturais > Ciências da terra e ciências do ambiente

Outras Informações

ID Authenticus: P-003-922

DOI: 10.1007/s11270-009-0136-3

Abstract (EN): The feasibility of using recycled granular tire rubber (GTR) to remove molinate from contaminated water bodies was evaluated in this study. Adsorption equilibrium data was well described by a linear isotherm, and the adsorption was completely reversible. Breakthrough curves showed column efficiencies of approximately 40%, based on total capacity, and complete bed regeneration was achieved using clean water. The effluent from the regeneration step was successfully decontaminated using a defined bacterial mixed culture, capable of molinate mineralization. It was shown that this treated water can be used for regenerating a subsequently saturated bed. The GTR adsorbent showed two important features: complete reversibility towards molinate adsorption and stability along successive adsorption/bio-regeneration cycles. Common adsorbents, such as activated carbons and resins, loose performance very quickly under the same conditions, due to irreversible adsorption.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10