Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite
Autor(a) principal: | |
---|---|
Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000300009 |
Resumo: | This paper presents a sequential injection system associated with a tangential filtration unit and an ultraviolet detector for on-line monitoring of fulvic acid sorption onto two modified vermiculites. With the proposed approach it was possible to improve the temporal resolution in the investigation of the equilibrium time needed for the system sorbent-sorbate to reach the chemical equilibrium. Sorption onto a 10 g L-1 suspension of vermiculite material modified by intercalation of polyhydroxycations of Fe(III) was fast, reaching the equilibrium after 4 min of contact time, and resulting in sorption of 97.9 % of the initial 10 mg L-1 fulvic acid concentration. Sorption onto a 10 g L-1 suspension of an organic vermiculite which was modified by ion exchange with hexadecyltrimethylammonium bromide exhibited a fast initial rate of sorption, followed by desorption and re-adsorption processes, reaching the equilibrium after 30 min of contact time, with sorption of 98% of the initial 10 mg L-1 fulvic acid concentration. |
id |
SBQ-2_237cbaceaa892c1d7de847d0756df9db |
---|---|
oai_identifier_str |
oai:scielo:S0103-50532006000300009 |
network_acronym_str |
SBQ-2 |
network_name_str |
Journal of the Brazilian Chemical Society (Online) |
repository_id_str |
|
spelling |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculiteflow analysisnatural organic mattersorptionreal-time analysesThis paper presents a sequential injection system associated with a tangential filtration unit and an ultraviolet detector for on-line monitoring of fulvic acid sorption onto two modified vermiculites. With the proposed approach it was possible to improve the temporal resolution in the investigation of the equilibrium time needed for the system sorbent-sorbate to reach the chemical equilibrium. Sorption onto a 10 g L-1 suspension of vermiculite material modified by intercalation of polyhydroxycations of Fe(III) was fast, reaching the equilibrium after 4 min of contact time, and resulting in sorption of 97.9 % of the initial 10 mg L-1 fulvic acid concentration. Sorption onto a 10 g L-1 suspension of an organic vermiculite which was modified by ion exchange with hexadecyltrimethylammonium bromide exhibited a fast initial rate of sorption, followed by desorption and re-adsorption processes, reaching the equilibrium after 30 min of contact time, with sorption of 98% of the initial 10 mg L-1 fulvic acid concentration.Sociedade Brasileira de Química2006-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000300009Journal of the Brazilian Chemical Society v.17 n.3 2006reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532006000300009info:eu-repo/semantics/openAccessAbate,GilbertoSantos,Luciana B. O. dosColombo,Sandro M.Masini,Jorge C.eng2006-05-25T00:00:00Zoai:scielo:S0103-50532006000300009Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2006-05-25T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
title |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
spellingShingle |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite Abate,Gilberto flow analysis natural organic matter sorption real-time analyses |
title_short |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
title_full |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
title_fullStr |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
title_full_unstemmed |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
title_sort |
Sequential injection analysis as a tool for on-line monitoring the sorption of fulvic acid onto modified vermiculite |
author |
Abate,Gilberto |
author_facet |
Abate,Gilberto Santos,Luciana B. O. dos Colombo,Sandro M. Masini,Jorge C. |
author_role |
author |
author2 |
Santos,Luciana B. O. dos Colombo,Sandro M. Masini,Jorge C. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Abate,Gilberto Santos,Luciana B. O. dos Colombo,Sandro M. Masini,Jorge C. |
dc.subject.por.fl_str_mv |
flow analysis natural organic matter sorption real-time analyses |
topic |
flow analysis natural organic matter sorption real-time analyses |
description |
This paper presents a sequential injection system associated with a tangential filtration unit and an ultraviolet detector for on-line monitoring of fulvic acid sorption onto two modified vermiculites. With the proposed approach it was possible to improve the temporal resolution in the investigation of the equilibrium time needed for the system sorbent-sorbate to reach the chemical equilibrium. Sorption onto a 10 g L-1 suspension of vermiculite material modified by intercalation of polyhydroxycations of Fe(III) was fast, reaching the equilibrium after 4 min of contact time, and resulting in sorption of 97.9 % of the initial 10 mg L-1 fulvic acid concentration. Sorption onto a 10 g L-1 suspension of an organic vermiculite which was modified by ion exchange with hexadecyltrimethylammonium bromide exhibited a fast initial rate of sorption, followed by desorption and re-adsorption processes, reaching the equilibrium after 30 min of contact time, with sorption of 98% of the initial 10 mg L-1 fulvic acid concentration. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000300009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000300009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532006000300009 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.17 n.3 2006 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318167013457920 |