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Advisor(s)
Abstract(s)
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.
Description
Keywords
Molinate Adsorption Amberlite XAD-4 Bio-regeneration
Citation
SILVA, Mónica ...[et al.] - Preliminary feasibility study for the use of an adsorption/bio-regeneration system for molinate removal from effluents. Water Research. ISSN 0043-1354. Vol. 38, n.º 11 (2004), p. 2677-2684
Publisher
Elsevier