Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality

The aim of this work was to evaluate the effects of spent coffee grounds (SCG), a highly hydrophobic raw material, on the hydrophobicity of two Mediterranean agricultural soils. Physical, chemical, mineralogical and biological soil properties, most of them used to evaluate soil quality, were studied...

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Autores: Cervera-Mata, Ana, Aranda, Víctor, Ontiveros, A., Comino, F., Martín, J.M., Vela, M., Delgado, G.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Jaén
Repositorio:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
OAI Identifier:oai:ruja.ujaen.es:10953/6887
Acceso en línea:https://doi.org/10.1016/j.catena.2020.104826
https://hdl.handle.net/10953/6887
Access Level:acceso abierto
Palabra clave:Soil hydrophobicity
Surface free energy
Organic amendments
Waste management
Organic raw material
Química de Suelos (2511.04)
Bioquímica de Suelos (2511.01)
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spelling Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil qualityCervera-Mata, AnaAranda, VíctorOntiveros, A.Comino, F.Martín, J.M.Vela, M.Delgado, G.Soil hydrophobicitySurface free energyOrganic amendmentsWaste managementOrganic raw materialQuímica de Suelos (2511.04)Bioquímica de Suelos (2511.01)The aim of this work was to evaluate the effects of spent coffee grounds (SCG), a highly hydrophobic raw material, on the hydrophobicity of two Mediterranean agricultural soils. Physical, chemical, mineralogical and biological soil properties, most of them used to evaluate soil quality, were studied and related to the main hydrophobicity parameters. The in vitro assay was performed with two SCG doses (2.5 and 10%), two soils and two incubation times (30 and 60 days). Hydrophobicity was determined by the water drop penetration time test (WDPT), the contact angle (CA) with H2O, formamide and diiodomethane, and the surface free energy components (SFE) calculated using the Van Oss model. The addition of SCG increased the WDPT, CA and SFE, being the latter which was related to a greater number of soil quality variables. Hydrophobicity was related to lower humus quality index (HQI), and a higher proportion of labile organic matter, as shown by Infrared and UV–vis spectroscopy. An increase in hydrophobicity was related to an improvement of soil physical quality: a high aggregate stability index, saturated hydraulic conductivity, porosity (total and macro), water retention, and a less bulk density. The most critical effect related to the increase in hydrophobicity was the significant decrease in the available water content. The SEM images showed a greater occlusion and stabilization mechanism of the SCG particles incorporated in Vega soil, probably due to its higher content of smectite and carbonates. The appearance of fungal biomineralizations of calcium carbonate is associated with SCG addition and could be considered as an interesting and little studied process of inorganic carbon fixation and secuestration. These results showed that hydrophobicity can afford relevant information that can help to asses soil quality status after an amendment with SCG.Elsevier202620262021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.1016/j.catena.2020.104826https://hdl.handle.net/10953/6887reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaéninstname:Universidad de JaénInglésCatenainfo:eu-repo/semantics/openAccessoai:ruja.ujaen.es:10953/68872026-06-24T12:41:07Z
dc.title.none.fl_str_mv Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
title Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
spellingShingle Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
Cervera-Mata, Ana
Soil hydrophobicity
Surface free energy
Organic amendments
Waste management
Organic raw material
Química de Suelos (2511.04)
Bioquímica de Suelos (2511.01)
title_short Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
title_full Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
title_fullStr Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
title_full_unstemmed Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
title_sort Hydrophobicity and surface free energy to assess spent coffee grounds as soil amendment. Relationships with soil quality
dc.creator.none.fl_str_mv Cervera-Mata, Ana
Aranda, Víctor
Ontiveros, A.
Comino, F.
Martín, J.M.
Vela, M.
Delgado, G.
author Cervera-Mata, Ana
author_facet Cervera-Mata, Ana
Aranda, Víctor
Ontiveros, A.
Comino, F.
Martín, J.M.
Vela, M.
Delgado, G.
author_role author
author2 Aranda, Víctor
Ontiveros, A.
Comino, F.
Martín, J.M.
Vela, M.
Delgado, G.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Soil hydrophobicity
Surface free energy
Organic amendments
Waste management
Organic raw material
Química de Suelos (2511.04)
Bioquímica de Suelos (2511.01)
topic Soil hydrophobicity
Surface free energy
Organic amendments
Waste management
Organic raw material
Química de Suelos (2511.04)
Bioquímica de Suelos (2511.01)
description The aim of this work was to evaluate the effects of spent coffee grounds (SCG), a highly hydrophobic raw material, on the hydrophobicity of two Mediterranean agricultural soils. Physical, chemical, mineralogical and biological soil properties, most of them used to evaluate soil quality, were studied and related to the main hydrophobicity parameters. The in vitro assay was performed with two SCG doses (2.5 and 10%), two soils and two incubation times (30 and 60 days). Hydrophobicity was determined by the water drop penetration time test (WDPT), the contact angle (CA) with H2O, formamide and diiodomethane, and the surface free energy components (SFE) calculated using the Van Oss model. The addition of SCG increased the WDPT, CA and SFE, being the latter which was related to a greater number of soil quality variables. Hydrophobicity was related to lower humus quality index (HQI), and a higher proportion of labile organic matter, as shown by Infrared and UV–vis spectroscopy. An increase in hydrophobicity was related to an improvement of soil physical quality: a high aggregate stability index, saturated hydraulic conductivity, porosity (total and macro), water retention, and a less bulk density. The most critical effect related to the increase in hydrophobicity was the significant decrease in the available water content. The SEM images showed a greater occlusion and stabilization mechanism of the SCG particles incorporated in Vega soil, probably due to its higher content of smectite and carbonates. The appearance of fungal biomineralizations of calcium carbonate is associated with SCG addition and could be considered as an interesting and little studied process of inorganic carbon fixation and secuestration. These results showed that hydrophobicity can afford relevant information that can help to asses soil quality status after an amendment with SCG.
publishDate 2021
dc.date.none.fl_str_mv 2021
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.catena.2020.104826
https://hdl.handle.net/10953/6887
url https://doi.org/10.1016/j.catena.2020.104826
https://hdl.handle.net/10953/6887
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Catena
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
instname:Universidad de Jaén
instname_str Universidad de Jaén
reponame_str RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
collection RUJA. Repositorio Institucional de la Producción Científica de la Universidad de Jaén
repository.name.fl_str_mv
repository.mail.fl_str_mv
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