Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents

Detalhes bibliográficos
Autor(a) principal: Pita, Fernando
Data de Publicação: 2019
Outros Autores: Castilho, Ana
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/107306
https://doi.org/10.1590/0104-1428.01419
Resumo: Froth flotation is the most common process in mineral processing. For the separation of plastic mixtures by flotation, the use of appropriate wetting agents is mandatory. The floatability of six post-consumer plastics was studied at different concentrations of the wetting agents, saponin and sodium lignosulfonate. Also, the influence of size and shape of the particles were analyzed. Contact angle and floatability of the six plastics decreased with increasing wetting agents concentration. The order of floatability is similar to the order of the contact angles values. However, the influence of the wetting agents in the plastics floatability is more pronounced than in the contact angle. Floatability decreased with the increase of particle density, particle size and spherical shape. For fine particles floatability is fundamentally conditioned by the contact angle, while for coarse particles floatability is fundamentally conditioned by the particles weight.
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spelling Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agentsflotationparticle sizeplasticwetting agentFroth flotation is the most common process in mineral processing. For the separation of plastic mixtures by flotation, the use of appropriate wetting agents is mandatory. The floatability of six post-consumer plastics was studied at different concentrations of the wetting agents, saponin and sodium lignosulfonate. Also, the influence of size and shape of the particles were analyzed. Contact angle and floatability of the six plastics decreased with increasing wetting agents concentration. The order of floatability is similar to the order of the contact angles values. However, the influence of the wetting agents in the plastics floatability is more pronounced than in the contact angle. Floatability decreased with the increase of particle density, particle size and spherical shape. For fine particles floatability is fundamentally conditioned by the contact angle, while for coarse particles floatability is fundamentally conditioned by the particles weight.ABPol2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/107306http://hdl.handle.net/10316/107306https://doi.org/10.1590/0104-1428.01419eng1678-51690104-1428Pita, FernandoCastilho, Anainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-03T08:43:49Zoai:estudogeral.uc.pt:10316/107306Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:23:40.720001Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
title Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
spellingShingle Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
Pita, Fernando
flotation
particle size
plastic
wetting agent
title_short Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
title_full Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
title_fullStr Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
title_full_unstemmed Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
title_sort Plastics floatability: effect of saponin and sodium lignosulfonate as wetting agents
author Pita, Fernando
author_facet Pita, Fernando
Castilho, Ana
author_role author
author2 Castilho, Ana
author2_role author
dc.contributor.author.fl_str_mv Pita, Fernando
Castilho, Ana
dc.subject.por.fl_str_mv flotation
particle size
plastic
wetting agent
topic flotation
particle size
plastic
wetting agent
description Froth flotation is the most common process in mineral processing. For the separation of plastic mixtures by flotation, the use of appropriate wetting agents is mandatory. The floatability of six post-consumer plastics was studied at different concentrations of the wetting agents, saponin and sodium lignosulfonate. Also, the influence of size and shape of the particles were analyzed. Contact angle and floatability of the six plastics decreased with increasing wetting agents concentration. The order of floatability is similar to the order of the contact angles values. However, the influence of the wetting agents in the plastics floatability is more pronounced than in the contact angle. Floatability decreased with the increase of particle density, particle size and spherical shape. For fine particles floatability is fundamentally conditioned by the contact angle, while for coarse particles floatability is fundamentally conditioned by the particles weight.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/107306
http://hdl.handle.net/10316/107306
https://doi.org/10.1590/0104-1428.01419
url http://hdl.handle.net/10316/107306
https://doi.org/10.1590/0104-1428.01419
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1678-5169
0104-1428
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv ABPol
publisher.none.fl_str_mv ABPol
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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