Characterization of humic acids extracted from biosolid amended soils

The aim of this study was to evaluate the changes produced in the chemical, acid-base and structural properties of soil amended (biosolids) and HAs incubated at different times. In the current work the amendments were conducted with biosolids at different doses (30, 90 and 180 t ha-1) on Colina (CLN...

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Autores principales:	Antilén,M, Silva,K, Acevedo,S, Amiama,F, Faúndez,M, Knicker,H, Pizarro,C
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2014
Materias:	Humic acids soils, biosolids Solid state NMR 13C
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400018
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spelling	oai:scielo:S0718-951620140004000182015-01-20Characterization of humic acids extracted from biosolid amended soilsAntilén,MSilva,KAcevedo,SAmiama,FFaúndez,MKnicker,HPizarro,C Humic acids soils, biosolids Solid state NMR 13C The aim of this study was to evaluate the changes produced in the chemical, acid-base and structural properties of soil amended (biosolids) and HAs incubated at different times. In the current work the amendments were conducted with biosolids at different doses (30, 90 and 180 t ha-1) on Colina (CLN) soil for 1, 2, 4 and 6 months. The acid-base characterization of extracted humic acids (HAs) showed a slight impact on Atotal (total acidity, mEq g-1), at 30 and 90 t ha-1 while at 180 t ha-1 the greatest increase was observed [from 10.5±1.61 (control) to 17.9±0.30 (6 months of incubation)], without evolution over the incubation time. The Aphenolic (phenolic acidity, mEq g-1) acidity behaves similarly while Acarboxylic (carboxylic acidity) remains constant over time and applied doses. The application of 13C solid state NMR technique revealed higher abundance of aromatic C (CLN 43.5%) over alkyl C (21.4%) compounds. Aromatic C presents a decrease at high biosolid doses, which occurs simultaneously with alkyl C increase when using the same surveyed doses. Therefore, it might be considered that through the addition of biosolids, components such as fatty acids, amino acids or paraffinic structures are incorporated. As a result of biosolids addition, carboxylic C content remains steady, which agrees with the A COOH behavior previously determined.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.14 n.4 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400018en10.4067/S0718-95162014005000078
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Humic acids soils, biosolids Solid state NMR 13C
spellingShingle	Humic acids soils, biosolids Solid state NMR 13C Antilén,M Silva,K Acevedo,S Amiama,F Faúndez,M Knicker,H Pizarro,C Characterization of humic acids extracted from biosolid amended soils
description	The aim of this study was to evaluate the changes produced in the chemical, acid-base and structural properties of soil amended (biosolids) and HAs incubated at different times. In the current work the amendments were conducted with biosolids at different doses (30, 90 and 180 t ha-1) on Colina (CLN) soil for 1, 2, 4 and 6 months. The acid-base characterization of extracted humic acids (HAs) showed a slight impact on Atotal (total acidity, mEq g-1), at 30 and 90 t ha-1 while at 180 t ha-1 the greatest increase was observed [from 10.5±1.61 (control) to 17.9±0.30 (6 months of incubation)], without evolution over the incubation time. The Aphenolic (phenolic acidity, mEq g-1) acidity behaves similarly while Acarboxylic (carboxylic acidity) remains constant over time and applied doses. The application of 13C solid state NMR technique revealed higher abundance of aromatic C (CLN 43.5%) over alkyl C (21.4%) compounds. Aromatic C presents a decrease at high biosolid doses, which occurs simultaneously with alkyl C increase when using the same surveyed doses. Therefore, it might be considered that through the addition of biosolids, components such as fatty acids, amino acids or paraffinic structures are incorporated. As a result of biosolids addition, carboxylic C content remains steady, which agrees with the A COOH behavior previously determined.
author	Antilén,M Silva,K Acevedo,S Amiama,F Faúndez,M Knicker,H Pizarro,C
author_facet	Antilén,M Silva,K Acevedo,S Amiama,F Faúndez,M Knicker,H Pizarro,C
author_sort	Antilén,M
title	Characterization of humic acids extracted from biosolid amended soils
title_short	Characterization of humic acids extracted from biosolid amended soils
title_full	Characterization of humic acids extracted from biosolid amended soils
title_fullStr	Characterization of humic acids extracted from biosolid amended soils
title_full_unstemmed	Characterization of humic acids extracted from biosolid amended soils
title_sort	characterization of humic acids extracted from biosolid amended soils
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162014000400018
work_keys_str_mv	AT antilenm characterizationofhumicacidsextractedfrombiosolidamendedsoils AT silvak characterizationofhumicacidsextractedfrombiosolidamendedsoils AT acevedos characterizationofhumicacidsextractedfrombiosolidamendedsoils AT amiamaf characterizationofhumicacidsextractedfrombiosolidamendedsoils AT faundezm characterizationofhumicacidsextractedfrombiosolidamendedsoils AT knickerh characterizationofhumicacidsextractedfrombiosolidamendedsoils AT pizarroc characterizationofhumicacidsextractedfrombiosolidamendedsoils
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Characterization of humic acids extracted from biosolid amended soils

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