Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation

Interest has grown in bio-polymers as being environmental friendly alternatives to synthetic additives. In this work, two native chitosans with different molecular weights have been evaluated on a laboratory scale for their effectiveness for the removal of contaminants from papermaking process water...

Descripción completa

Detalles Bibliográficos
Autores: Miranda Carreño, Rubén, Nicu, Raluca, Latour Romero, Isabel, Lupei, Mihail, Bobu, Elena, Blanco Suárez, María Ángeles
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/33610
Acceso en línea:https://hdl.handle.net/20.500.14352/33610
Access Level:acceso abierto
Palabra clave:676
66
Chitosan
Flocculation
Bentonite
Dissolved air flotation
Papermaking process water
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
id ES_e5d0bbaffd16d37ec11f1c45faa1192b
oai_identifier_str oai:docta.ucm.es:20.500.14352/33610
network_acronym_str ES
network_name_str España
repository_id_str
spelling Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotationMiranda Carreño, RubénNicu, RalucaLatour Romero, IsabelLupei, MihailBobu, ElenaBlanco Suárez, María Ángeles67666ChitosanFlocculationBentoniteDissolved air flotationPapermaking process waterIndustria del papelIngeniería químicaMedio ambienteQuímica industrial3312.13 Tecnología de la Madera3303 Ingeniería y Tecnología Químicas2391 Química AmbientalInterest has grown in bio-polymers as being environmental friendly alternatives to synthetic additives. In this work, two native chitosans with different molecular weights have been evaluated on a laboratory scale for their effectiveness for the removal of contaminants from papermaking process waters by dissolved air flotation (DAF). The use of chitosan quaternary derivatives and the use of the native chitosans in combination with anionic bentonite microparticles have also been tested. Results demonstrate a high efficiency of the native chitosan products at intermediate dosages and furthermore, their efficiency is enhanced by the combined addition of bentonite. For an equivalent removal of contaminants, the required dosage of chitosan is about half that the dosage required in absence of bentonite. Quaternary derivatives have not improved the efficiency of the native chitosan in this case. The optimum treatment would be 50 mg/L of native chitosan and 100 mg/L of bentonite where this treatment is capable of the removal of 83- 89% turbidity (residual turbidity 210-320 NTU), 68-71% dissolved turbidity (residual dissolved turbidity of 22-24 NTU), 18-22% total solids (residual total solids of 2750-2900 mg/L) and 19-23% COD (1440-1525 mg/L). The low molecular weight native chitosan is more efficient than the medium molecular weight chitosan in all cases. The Focused Beam Reflectance Measurement (FBRM) is used to assess the aggregation process and to predict the separation efficiency of DAF units either with single or dual systems. The efficiency predicted through the FBRM technique is very similar to that obtained later in the DAF tests.ElsevierUniversidad Complutense de Madrid20132013-01-0120132013-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/33610reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/336102026-06-02T12:44:21Z
dc.title.none.fl_str_mv Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
title Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
spellingShingle Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
Miranda Carreño, Rubén
676
66
Chitosan
Flocculation
Bentonite
Dissolved air flotation
Papermaking process water
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
title_short Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
title_full Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
title_fullStr Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
title_full_unstemmed Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
title_sort Efficiency of chitosans for the treatment of papermaking process water by dissolved air flotation
dc.creator.none.fl_str_mv Miranda Carreño, Rubén
Nicu, Raluca
Latour Romero, Isabel
Lupei, Mihail
Bobu, Elena
Blanco Suárez, María Ángeles
author Miranda Carreño, Rubén
author_facet Miranda Carreño, Rubén
Nicu, Raluca
Latour Romero, Isabel
Lupei, Mihail
Bobu, Elena
Blanco Suárez, María Ángeles
author_role author
author2 Nicu, Raluca
Latour Romero, Isabel
Lupei, Mihail
Bobu, Elena
Blanco Suárez, María Ángeles
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 676
66
Chitosan
Flocculation
Bentonite
Dissolved air flotation
Papermaking process water
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
topic 676
66
Chitosan
Flocculation
Bentonite
Dissolved air flotation
Papermaking process water
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
description Interest has grown in bio-polymers as being environmental friendly alternatives to synthetic additives. In this work, two native chitosans with different molecular weights have been evaluated on a laboratory scale for their effectiveness for the removal of contaminants from papermaking process waters by dissolved air flotation (DAF). The use of chitosan quaternary derivatives and the use of the native chitosans in combination with anionic bentonite microparticles have also been tested. Results demonstrate a high efficiency of the native chitosan products at intermediate dosages and furthermore, their efficiency is enhanced by the combined addition of bentonite. For an equivalent removal of contaminants, the required dosage of chitosan is about half that the dosage required in absence of bentonite. Quaternary derivatives have not improved the efficiency of the native chitosan in this case. The optimum treatment would be 50 mg/L of native chitosan and 100 mg/L of bentonite where this treatment is capable of the removal of 83- 89% turbidity (residual turbidity 210-320 NTU), 68-71% dissolved turbidity (residual dissolved turbidity of 22-24 NTU), 18-22% total solids (residual total solids of 2750-2900 mg/L) and 19-23% COD (1440-1525 mg/L). The low molecular weight native chitosan is more efficient than the medium molecular weight chitosan in all cases. The Focused Beam Reflectance Measurement (FBRM) is used to assess the aggregation process and to predict the separation efficiency of DAF units either with single or dual systems. The efficiency predicted through the FBRM technique is very similar to that obtained later in the DAF tests.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01
2013
2013-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/33610
url https://hdl.handle.net/20.500.14352/33610
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
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:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422712597774336
score 15,301603

Similares en LA Referencia