Benefits and limitations of using Fe(III)-EDDS for the treatment of highly contaminated water at near-neutral pH

This study evaluates the use of the Fe(III)-EDDS complexing agent as an alternative to conventional acidic pH photo-Fenton for the treatment of the pesticide imidacloprid in natural water. The main objective is to estimate whether Fe(III)-EDDS is a viable alternative when treating waters containing high concentrations of contaminants. To this end, the mode of action of Fe(III)-EDDS is examined in the presence of carbonates, at different aeration conditions and at different temperatures. The role of HO2 center dot/O-2(center dot-) radical species and some aspects of the Fe(III)-EDDS complexation mechanism are discussed. Degradation kinetics and toxicities of generated intermediates are compared between Fe(III)-EDDS and conventional photo-Fenton treatment. An overview of the benefits and limitations of the process is presented. (C) 2015 Elsevier B.V. All rights reserved.


Published in:
Journal Of Photochemistry And Photobiology A-Chemistry, 303, 1-7
Year:
2015
Publisher:
Lausanne, Elsevier
ISSN:
1010-6030
Keywords:
Laboratories:




 Record created 2015-05-29, last modified 2018-01-28


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