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Artículo

Rapid characterisation of agro-industrial effluents for environmental fate by UV–visible and infrared spectroscopy from fractions obtained by centrifugation

Iocoli, Gastón AlejandroIcon ; Pieroni, Olga Inés; Gomez, Marisa Anahi; Alvarez, Monica Beatriz; Galantini, Juan Alberto
Fecha de publicación: 06/2017
Editorial: Taylor & Francis Ltd
Revista: International Journal of Environmental Analytical Chemistry
ISSN: 0306-7319
Idioma: Inglés
Tipo de recurso: Artículo publicado

Resumen

Agro-industrial systems (e.g. dairy farms, feed lot, pig breeding and food processing plants) provide large quantity of organic wastes that could be recycled within the productive systems. However, the basic chemical characterisation is not enough to predict the effect that they may generate on the environment. In this study, a centrifugation process was applied at various speeds between 3000 and 15,000 rpm and carried out separately on two different livestock effluents (dairy farm and pig anaerobic digestate), in order to obtain supernatants and precipitates, which were studied separately. The more water soluble fractions, with lighter components and/or simpler structures, remained as liquid supernatants, while the more complex fractions, with higher molecular weight and/or water insoluble fractions, constituted the solid precipitates. An increase in the centrifugation rate did not produce the differential precipitation of dissimilar functional groups. Hence, 5000 rpm was the most adequate velocity since it generated clear supernatants without denaturation of the organic matter. A basic cost-effective chemical analysis, complemented with ultraviolet–visible and Fourier transform infrared spectroscopy, enables a set of properties to be established qualitatively and quickly for the multiple components of the organic matter for its later use as fertilisers or amendments. This rapid and economical technique allows for a characterisation prior to the reuse of the effluents, which is necessary to optimise their application and avoid environmental problems.
Palabras clave: Dairy Effluents , Molecular Structure , Organic Matter , Pig Digestate
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/65733
DOI: https://dx.doi.org/10.1080/03067319.2017.1354993
URL: https://www.tandfonline.com/doi/full/10.1080/03067319.2017.1354993
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Articulos(CCT - BAHIA BLANCA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Citación
Iocoli, Gastón Alejandro; Pieroni, Olga Inés; Gomez, Marisa Anahi; Alvarez, Monica Beatriz; Galantini, Juan Alberto; Rapid characterisation of agro-industrial effluents for environmental fate by UV–visible and infrared spectroscopy from fractions obtained by centrifugation; Taylor & Francis Ltd; International Journal of Environmental Analytical Chemistry; 97; 8; 6-2017; 756-767
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