Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica

Topic name Nanoparticle; Silicon Dioxide; Scanning Electron Microscopy Prominence percentile 96.343

Detalles Bibliográficos
Autores: Díaz-Tovar, Dairo, Centeno, Miguel Ángel, Molina, Rafael A., Moreno, Sonia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/389744
Acceso en línea:http://hdl.handle.net/10261/389744
https://api.elsevier.com/content/abstract/scopus_id/105002637015
Access Level:acceso abierto
Palabra clave:Bio-silica
Biomass
Combustion
Leaching
Rice husk
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
silica
combustion
rice husks
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network_acronym_str ES
network_name_str España
repository_id_str
spelling Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silicaDíaz-Tovar, DairoCenteno, Miguel ÁngelMolina, Rafael A.Moreno, SoniaBio-silicaBiomassCombustionLeachingRice huskhttp://metadata.un.org/sdg/9Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovationsilicacombustionrice husksTopic name Nanoparticle; Silicon Dioxide; Scanning Electron Microscopy Prominence percentile 96.343Leaching is a pretreatment that removes ionic species responsible for undesired reactions during biomass thermochemical transformation. Despite numerous reported leaching conditions, the impact of specific factors on ionic species removal remains insufficiently understood for widespread application. This study investigates the relationship between experimental factors and their optimal levels in aqueous medium, focusing on the effects of pH and acid type on rice husk and bio-silica's physicochemical and thermochemical properties. Optimal leaching conditions were identified as HCl at pH 1.5, 70 °C, 150 min, 1 g rice husk per 80 g H2O, and 30 rpm, yielding bio-silica with 99.45 ± 0.04 % purity, a surface area of 318 ± 10 m2 g−1, and a pore volume of 0.46 ± 0.01 cm3 g−1. Leaching enhances devolatilization during thermal decomposition but inhibits biochar oxidation. 29Si NMR analysis revealed 16.4 % Q3 and Q2 silanol groups in the bio-silica, while SEM-EDX confirmed its high purity and porosity. These results offer key insights into improving leaching methods, helping to produce better-quality bio-silica, and supporting its use in eco-friendly industrial applications.The authors thank to Minciencias Colombia for the Bicentennial Doctoral Excellence Scholarship Program and Unitropico for the Commission for Doctoral Studies as well as partial financing through the Universidad Nacional de Colombia projects code Hermes 58000 and 60280.Peer reviewedElsevierMinisterio de Ciencia, Tecnología e Innovación (Colombia)Universidad Nacional de ColombiaDíaz-Tovar, Dairo [0000-0003-0035-7977]Centeno, Miguel Ángel [0000-0002-8349-3044]Molina, Rafael A. [0000-0002-8676-7039]Moreno, Sonia [0000-0002-0182-7793]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/389744https://api.elsevier.com/content/abstract/scopus_id/105002637015reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.mtsust.2025.101122Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3897442026-05-22T06:33:51Z
dc.title.none.fl_str_mv Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
title Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
spellingShingle Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
Díaz-Tovar, Dairo
Bio-silica
Biomass
Combustion
Leaching
Rice husk
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
silica
combustion
rice husks
title_short Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
title_full Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
title_fullStr Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
title_full_unstemmed Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
title_sort Comprehensive understanding of the experimental factors determining the leaching of rice husk, and their effect on the thermochemical properties and characteristics of bio-silica
dc.creator.none.fl_str_mv Díaz-Tovar, Dairo
Centeno, Miguel Ángel
Molina, Rafael A.
Moreno, Sonia
author Díaz-Tovar, Dairo
author_facet Díaz-Tovar, Dairo
Centeno, Miguel Ángel
Molina, Rafael A.
Moreno, Sonia
author_role author
author2 Centeno, Miguel Ángel
Molina, Rafael A.
Moreno, Sonia
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Tecnología e Innovación (Colombia)
Universidad Nacional de Colombia
Díaz-Tovar, Dairo [0000-0003-0035-7977]
Centeno, Miguel Ángel [0000-0002-8349-3044]
Molina, Rafael A. [0000-0002-8676-7039]
Moreno, Sonia [0000-0002-0182-7793]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Bio-silica
Biomass
Combustion
Leaching
Rice husk
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
silica
combustion
rice husks
topic Bio-silica
Biomass
Combustion
Leaching
Rice husk
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
silica
combustion
rice husks
description Topic name Nanoparticle; Silicon Dioxide; Scanning Electron Microscopy Prominence percentile 96.343
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/389744
https://api.elsevier.com/content/abstract/scopus_id/105002637015
url http://hdl.handle.net/10261/389744
https://api.elsevier.com/content/abstract/scopus_id/105002637015
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.mtsust.2025.101122
Sí
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:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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