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

Title
Preliminary feasibility study for the use of an adsorption/bioregeneration system for molinate removal from effluents
Type
Article in International Scientific Journal
Year
2004
Authors
Mónica Silva
(Author)
Other
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Ana Fernandes
(Author)
Other
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Adélio Mendes
(Author)
FEUP
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Célia M. Manaia
(Author)
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Olga C. Nunes
(Author)
FEUP
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Journal
Title: Water ResearchImported from Authenticus Search for Journal Publications
Vol. 38 No. 11
Pages: 2677-2684
ISSN: 0043-1354
Publisher: Elsevier
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Publicação em ISI Web of Science ISI Web of Science
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Scientific classification
FOS: Engineering and technology > Environmental engineering
CORDIS: Technological sciences > Engineering > Chemical engineering
Other information
Authenticus ID: P-000-AAM
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
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