Preliminary feasibility study for the use of an adsorption/bioregeneration system for molinate removal from effluents

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

Mónica Silva (Autor) Outra; Ana Fernandes (Autor) Outra; Adélio Mendes (Autor) FEUP; Célia M. Manaia (Autor) Outra; Olga C. Nunes (Autor) FEUP

Revista

Título: Water Research

Vol. 38 Nº 11

Páginas: 2677-2684

ISSN: 0043-1354

Editora: Elsevier

Indexação

ISI Web of Knowledge - 24 Citações

ISI Web of Science

Scopus - 30 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia do ambiente

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-000-AAM

DOI: 10.1016/j.watres.2004.03.016

Abstract (EN): This work studies the feasibility of the use of a combined physical-biological remediation procedure for treatment of effluents contaminated with molinate, where the herbicide is removed through adsorption and biodegraded in a subsequent stage, with the regeneration of the adsorbent. In order to select the most adequate absorbent for molinate, different materials were tested, namely pine bark, activated carbon and resin Amberlite XAD-4. Activated carbon and resin Amberlite XAD-4 were the most efficient on the removal of molinate from solutions, although the activated carbon used proved not to be bio-regenerable. It was also observed that factors such as temperature, pH, and conductivity did not affect significantly molinate adsorption onto resin Amberlite XAD-4. Resin Amberlite XAD-4 was successfully bio-regenerated, being observed that biodegradation was mainly dependent on spontaneous desorption of the molinate. After bio-regeneration, the resin could be re-utilised as adsorbent.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8