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

• Type: Article in International Scientific Journal
• Date: 2004

Authors

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

Journal

Title: Water Research

Vol. 38 No. 11

Pages: 2677-2684

ISSN: 0043-1354

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 24 Citations

ISI Web of Science

Scopus - 30 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Environmental engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8