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Anaerobic Digestion Alters Copper and Zinc Speciation

Legros, Samuel and Levard, Clément and Marcato-Romain, Claire-Emmanuelle and Guiresse, Agnès Maritchù and Doelsch, Emmanuel Anaerobic Digestion Alters Copper and Zinc Speciation. (2017) Environmental Science & Technology, 51 (18). 10326-10334. ISSN 0013-936X

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Official URL: http://dx.doi.org/10.1021/acs.est.7b01662

Abstract

Anaerobic digestion is a widely used organic waste treatment process. However, little is known on how it could alter the speciation of contaminants in organic waste. This study was focused on determining the influence of anaerobic digestion on the speciation of copper and zinc, two metals that generally occur at high concentration in organic waste. Copper and zinc speciation was investigated by X-ray absorption spectroscopy in four different raw organic wastes (predigestion) and their digested counterparts (postdigestion, i.e., digestates). The results highlighted an increase in the digestates of the proportion of amorphous or nanostructured copper sulfides as well as amorphous or nanostructured zinc sulfides and zinc phosphate as compared to raw waste. We therefore suggest that the environmental fate of these elements would be different when spreading either digestates or raw waste on cropland.

Item Type:Article
Additional Information:Thanks to American Chemical Society editor. The definitive version is available at http://pubs.acs.org/ The original PDF of the article can be found at Environmental Science & Technology website : http://pubs.acs.org/journal/esthag
HAL Id:hal-01643555
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Aix-Marseille Université - AMU (FRANCE)
French research institutions > Centre de Coopération Internationale en Recherche Agronomique - CIRAD (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Collège de France (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
French research institutions > Institut de Recherche pour le Développement - IRD (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
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Deposited By: Christelle BOYER
Deposited On:04 Oct 2017 10:58

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