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Title: Photobleaching of lignin derived compounds from pulp mill effluents upon irradiation: the key role of receiving waters
Author: Otero, Marta
Guilherme, Isabela
Santos, Eduarda B. H.
Keywords: Chloride
Fulvic acids
Pulp mill effluents
Issue Date: 2013
Publisher: Elsevier
Abstract: Lignin derived macromolecular compounds are the main constituents responsible for the hazardous effects of discharged effluents from the pulp and paper industry in receiving waters. It was shown by ultraviolet–visible (UV–vis) and fluorescence spectroscopies that a selective photodegradation of these structures occurred upon irradiation of fulvic acids (FA) from a kraft pulp mill effluent. Though photodegradation was not remarkably affected by the presence of the natural photosensitizer nitrate, it was inhibited under the presence of chloride. These results indicate that the fate of macromolecular organic matter from kraft pulp mill effluents may be different depending on the type of receiving waters, having a higher persistence when effluents are discharged in estuarine or marine waters than when they are discharged in fresh water.
Peer review: yes
DOI: 10.1016/j.envpol.2013.07.007
ISSN: 0269-7491
Appears in Collections:CESAM - Artigos
DQ - Artigos

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