Minimization of the environmental impact in the unhairing of bovine hides

This study tests an alternative method to the traditional unhairing method used during the process of tanning the hides. The new method is based on the substitution of sodium sulfide by hydrogen peroxide as an unhairing agent in both hair recovery and recirculation of the floats employed in the proc...

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Detalles Bibliográficos
Autores: Morera Prat, Josep M., Bacardit i Dalmases, Anna, Ollé i Otero, Lluís, Bartolí, Esther, Borràs Fillat, Maria Dolors
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2008
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/71298
Acceso en línea:https://doi.org/10.1016/j.chemosphere.2008.05.023
http://hdl.handle.net/10459.1/71298
Access Level:acceso abierto
Palabra clave:Hide unhairing
Unhairing wastewater
Tanning industry
Residual float
Pollution minimization
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spelling Minimization of the environmental impact in the unhairing of bovine hidesMorera Prat, Josep M.Bacardit i Dalmases, AnnaOllé i Otero, LluísBartolí, EstherBorràs Fillat, Maria DolorsHide unhairingUnhairing wastewaterTanning industryResidual floatPollution minimizationThis study tests an alternative method to the traditional unhairing method used during the process of tanning the hides. The new method is based on the substitution of sodium sulfide by hydrogen peroxide as an unhairing agent in both hair recovery and recirculation of the floats employed in the process. The properties of the hides obtained using the two methods have been compared and the results indicate that those hides have similar physical, chemical, and organoleptic properties. However, the differences existing from an environmental point of view are significant. These include reductions of water consumption (approx 70%), chemical oxygen demand (approx 35%), toxicity (98%) and total kjendhal nitrogen (50%). Also, the risk associated with the production of hydrogen sulfide is eliminated, which implies a great improvement in terms of safety for the workers. Given the large amounts of water and chemical pollution discharged in the process, the reductions in absolute values represent a significant improvement. A financial assessment was carried out to demonstrate that the proposed new system is 16% more economic than the traditional one.The contents of this paper are part of the “Savewatertan” CRAFT Project funded by the EU.Elsevier2008info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttps://doi.org/10.1016/j.chemosphere.2008.05.023http://hdl.handle.net/10459.1/71298reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.chemosphere.2008.05.023Chemosphere, 2008, vol. 72, núm. 11, p. 1681-1686cc-by-nc-nd, (c) Elsevier, 2008info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/712982026-06-24T12:42:17Z
dc.title.none.fl_str_mv Minimization of the environmental impact in the unhairing of bovine hides
title Minimization of the environmental impact in the unhairing of bovine hides
spellingShingle Minimization of the environmental impact in the unhairing of bovine hides
Morera Prat, Josep M.
Hide unhairing
Unhairing wastewater
Tanning industry
Residual float
Pollution minimization
title_short Minimization of the environmental impact in the unhairing of bovine hides
title_full Minimization of the environmental impact in the unhairing of bovine hides
title_fullStr Minimization of the environmental impact in the unhairing of bovine hides
title_full_unstemmed Minimization of the environmental impact in the unhairing of bovine hides
title_sort Minimization of the environmental impact in the unhairing of bovine hides
dc.creator.none.fl_str_mv Morera Prat, Josep M.
Bacardit i Dalmases, Anna
Ollé i Otero, Lluís
Bartolí, Esther
Borràs Fillat, Maria Dolors
author Morera Prat, Josep M.
author_facet Morera Prat, Josep M.
Bacardit i Dalmases, Anna
Ollé i Otero, Lluís
Bartolí, Esther
Borràs Fillat, Maria Dolors
author_role author
author2 Bacardit i Dalmases, Anna
Ollé i Otero, Lluís
Bartolí, Esther
Borràs Fillat, Maria Dolors
author2_role author
author
author
author
dc.subject.none.fl_str_mv Hide unhairing
Unhairing wastewater
Tanning industry
Residual float
Pollution minimization
topic Hide unhairing
Unhairing wastewater
Tanning industry
Residual float
Pollution minimization
description This study tests an alternative method to the traditional unhairing method used during the process of tanning the hides. The new method is based on the substitution of sodium sulfide by hydrogen peroxide as an unhairing agent in both hair recovery and recirculation of the floats employed in the process. The properties of the hides obtained using the two methods have been compared and the results indicate that those hides have similar physical, chemical, and organoleptic properties. However, the differences existing from an environmental point of view are significant. These include reductions of water consumption (approx 70%), chemical oxygen demand (approx 35%), toxicity (98%) and total kjendhal nitrogen (50%). Also, the risk associated with the production of hydrogen sulfide is eliminated, which implies a great improvement in terms of safety for the workers. Given the large amounts of water and chemical pollution discharged in the process, the reductions in absolute values represent a significant improvement. A financial assessment was carried out to demonstrate that the proposed new system is 16% more economic than the traditional one.
publishDate 2008
dc.date.none.fl_str_mv 2008
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.chemosphere.2008.05.023
http://hdl.handle.net/10459.1/71298
url https://doi.org/10.1016/j.chemosphere.2008.05.023
http://hdl.handle.net/10459.1/71298
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.chemosphere.2008.05.023
Chemosphere, 2008, vol. 72, núm. 11, p. 1681-1686
dc.rights.none.fl_str_mv cc-by-nc-nd, (c) Elsevier, 2008
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd, (c) Elsevier, 2008
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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