Metals uptake by live yeast and heat-modified yeast residue
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Ambiente & Água |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2015000300510 |
Resumo: | This study evaluated the biosorption of Cd2+, Cr3+, Pb2+ and Cu2+ at pHs 3, 4, 5 and 6 for Saccharomyces cerevisiae both alive and biologically inactivated by different heating procedures (oven, autoclave or spray dry technique originated from alcohol industry). The material inactivated by autoclave (IA, at 120°C, 30 min) had the best performance for metals uptake: 1.88 ± 0.07 (Cu2+), 2.22 ± 0.02 (Cr3+) and 1.57 ± 0.08 g kg-1 (Pb2+). For Cd2+; while the material inactivated by spray dry (RY) presented the higher sorption capacity, 2.30 ± 0.08 g kg-1. The sorption studies showed that the biosorbent materials presented different sorption capacities and an ideal sorption pH. The sorption sites were investigated by potentiometric titration and FT-IR and showed that different heating processes used to inactivate biological samples produce materials with different characteristics and with a diverse sorption capacity due to modification of the available sorption sites. This suggests that inactivation by heating can be an alternative to improve the performance of biosorbents. The main sorption sites for each material were phenolic for live yeast (LY) and carboxylic for yeast inactivated by heating in an autoclave (IA). |
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Metals uptake by live yeast and heat-modified yeast residuebiosorptionmetals sorptionmodification of the biosorbentsorption sitesThis study evaluated the biosorption of Cd2+, Cr3+, Pb2+ and Cu2+ at pHs 3, 4, 5 and 6 for Saccharomyces cerevisiae both alive and biologically inactivated by different heating procedures (oven, autoclave or spray dry technique originated from alcohol industry). The material inactivated by autoclave (IA, at 120°C, 30 min) had the best performance for metals uptake: 1.88 ± 0.07 (Cu2+), 2.22 ± 0.02 (Cr3+) and 1.57 ± 0.08 g kg-1 (Pb2+). For Cd2+; while the material inactivated by spray dry (RY) presented the higher sorption capacity, 2.30 ± 0.08 g kg-1. The sorption studies showed that the biosorbent materials presented different sorption capacities and an ideal sorption pH. The sorption sites were investigated by potentiometric titration and FT-IR and showed that different heating processes used to inactivate biological samples produce materials with different characteristics and with a diverse sorption capacity due to modification of the available sorption sites. This suggests that inactivation by heating can be an alternative to improve the performance of biosorbents. The main sorption sites for each material were phenolic for live yeast (LY) and carboxylic for yeast inactivated by heating in an autoclave (IA).Instituto de Pesquisas Ambientais em Bacias Hidrográficas2015-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2015000300510Revista Ambiente & Água v.10 n.3 2015reponame:Revista Ambiente & Águainstname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)instacron:IPABHI10.4136/ambi-agua.1577info:eu-repo/semantics/openAccessLabuto,GeórgiaTrama,BiancaGueller,Geison Castro da SilveiraGuarnieri,Bruna de SouzaSilva,Fernando Vitorino daCollazo,Robertaeng2015-07-23T00:00:00Zoai:scielo:S1980-993X2015000300510Revistahttp://www.ambi-agua.net/PUBhttps://old.scielo.br/oai/scielo-oai.php||ambi.agua@gmail.com1980-993X1980-993Xopendoar:2015-07-23T00:00Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)false |
dc.title.none.fl_str_mv |
Metals uptake by live yeast and heat-modified yeast residue |
title |
Metals uptake by live yeast and heat-modified yeast residue |
spellingShingle |
Metals uptake by live yeast and heat-modified yeast residue Labuto,Geórgia biosorption metals sorption modification of the biosorbent sorption sites |
title_short |
Metals uptake by live yeast and heat-modified yeast residue |
title_full |
Metals uptake by live yeast and heat-modified yeast residue |
title_fullStr |
Metals uptake by live yeast and heat-modified yeast residue |
title_full_unstemmed |
Metals uptake by live yeast and heat-modified yeast residue |
title_sort |
Metals uptake by live yeast and heat-modified yeast residue |
author |
Labuto,Geórgia |
author_facet |
Labuto,Geórgia Trama,Bianca Gueller,Geison Castro da Silveira Guarnieri,Bruna de Souza Silva,Fernando Vitorino da Collazo,Roberta |
author_role |
author |
author2 |
Trama,Bianca Gueller,Geison Castro da Silveira Guarnieri,Bruna de Souza Silva,Fernando Vitorino da Collazo,Roberta |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Labuto,Geórgia Trama,Bianca Gueller,Geison Castro da Silveira Guarnieri,Bruna de Souza Silva,Fernando Vitorino da Collazo,Roberta |
dc.subject.por.fl_str_mv |
biosorption metals sorption modification of the biosorbent sorption sites |
topic |
biosorption metals sorption modification of the biosorbent sorption sites |
description |
This study evaluated the biosorption of Cd2+, Cr3+, Pb2+ and Cu2+ at pHs 3, 4, 5 and 6 for Saccharomyces cerevisiae both alive and biologically inactivated by different heating procedures (oven, autoclave or spray dry technique originated from alcohol industry). The material inactivated by autoclave (IA, at 120°C, 30 min) had the best performance for metals uptake: 1.88 ± 0.07 (Cu2+), 2.22 ± 0.02 (Cr3+) and 1.57 ± 0.08 g kg-1 (Pb2+). For Cd2+; while the material inactivated by spray dry (RY) presented the higher sorption capacity, 2.30 ± 0.08 g kg-1. The sorption studies showed that the biosorbent materials presented different sorption capacities and an ideal sorption pH. The sorption sites were investigated by potentiometric titration and FT-IR and showed that different heating processes used to inactivate biological samples produce materials with different characteristics and with a diverse sorption capacity due to modification of the available sorption sites. This suggests that inactivation by heating can be an alternative to improve the performance of biosorbents. The main sorption sites for each material were phenolic for live yeast (LY) and carboxylic for yeast inactivated by heating in an autoclave (IA). |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-01 |
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=S1980-993X2015000300510 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2015000300510 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.4136/ambi-agua.1577 |
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 |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas |
publisher.none.fl_str_mv |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas |
dc.source.none.fl_str_mv |
Revista Ambiente & Água v.10 n.3 2015 reponame:Revista Ambiente & Água instname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI) instacron:IPABHI |
instname_str |
Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI) |
instacron_str |
IPABHI |
institution |
IPABHI |
reponame_str |
Revista Ambiente & Água |
collection |
Revista Ambiente & Água |
repository.name.fl_str_mv |
Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI) |
repository.mail.fl_str_mv |
||ambi.agua@gmail.com |
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1752129749421916160 |