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

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Débora Carvalho (Author) Other; Adélio Mendes (Author) FEUP; Fernão D Magalhães (Author) FEUP; Olga C. Nunes (Author) FEUP

Journal

Title: Water, Air, and Soil Pollution

Vol. 207

Pages: 289-298

ISSN: 0049-6979

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 7 Citations

ISI Web of Science

Scopus - 7 Citations

INSPEC

Scientific classification

CORDIS: Physical sciences > Chemistry > Applied chemistry > Environmental chemistry

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10