Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/5907 |
Resumo: | The harvesting of microalgae is currently one of the bottlenecks hindering the commercial production of microalgae-based biofuels and products. The objective of this study was to determine the best flocculant and its optimum concentration in order to harvest the marine microalga Conticribra weissflogii (previously Thalassiosira weissflogii) for further use in the production of biofuels or bioelements. Experiments were conducted with cultures in the logarithmic and stationary growth phases. The low-charge FLOPAM® FO 4240 SH was the most effective at concentrations of 2 and 4 mg m 3 in the LOG phase cultures, with flocculation efficiencies >90%. Smaller flocculation efficiencies were observed for cells in the stationary growth phase, most likely due to the production of dissolved organic carbon by the microalga. The highest microalgae density generated higher flocculation rates, whereas the pH and salinity negatively impacted flocculant efficiency. |
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König, Ricardo BesslerSales, RafaelRoselet, FabioAbreu, Paulo Cesar Oliveira Vergne de2016-02-11T23:24:07Z2016-02-11T23:24:07Z2014KÖNIG, Ricardo Bessler et al. Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants. Biomass & bioenergy, v. 68, p. 1-6, 2014. Disponível em:< https://www.researchgate.net/publication/263427695_Harvesting_of_the_marine_microalga_Conticribra_weissflogii_Bacillariophyceae_by_cationic_polymeric_flocculants>. Acesso em: 10 Fev. 2016.0961-9534http://repositorio.furg.br/handle/1/590710.1016/j.biombioe.2014.06.001The harvesting of microalgae is currently one of the bottlenecks hindering the commercial production of microalgae-based biofuels and products. The objective of this study was to determine the best flocculant and its optimum concentration in order to harvest the marine microalga Conticribra weissflogii (previously Thalassiosira weissflogii) for further use in the production of biofuels or bioelements. Experiments were conducted with cultures in the logarithmic and stationary growth phases. The low-charge FLOPAM® FO 4240 SH was the most effective at concentrations of 2 and 4 mg m 3 in the LOG phase cultures, with flocculation efficiencies >90%. Smaller flocculation efficiencies were observed for cells in the stationary growth phase, most likely due to the production of dissolved organic carbon by the microalga. The highest microalgae density generated higher flocculation rates, whereas the pH and salinity negatively impacted flocculant efficiency.engMarineMicroalgaConticribra weissflogiiThalassiosira weissflogiiFlocculationFlopamHarvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculantsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINAL50684BE3-2C42-4D8F-9A65-3C3A562F7BCC.pdf50684BE3-2C42-4D8F-9A65-3C3A562F7BCC.pdfapplication/pdf525338https://repositorio.furg.br/bitstream/1/5907/1/50684BE3-2C42-4D8F-9A65-3C3A562F7BCC.pdf050ff8326d59ef8f00894d3d0cc728e8MD51metadata only accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://repositorio.furg.br/bitstream/1/5907/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52open access1/59072016-02-11 21:24:07.398metadata only accessoai:repositorio.furg.br:1/5907Tk9URTogUExBQ0UgWU9VUiBPV04gTElDRU5TRSBIRVJFClRoaXMgc2FtcGxlIGxpY2Vuc2UgaXMgcHJvdmlkZWQgZm9yIGluZm9ybWF0aW9uYWwgcHVycG9zZXMgb25seS4KCk5PTi1FWENMVVNJVkUgRElTVFJJQlVUSU9OIExJQ0VOU0UKCkJ5IHNpZ25pbmcgYW5kIHN1Ym1pdHRpbmcgdGhpcyBsaWNlbnNlLCB5b3UgKHRoZSBhdXRob3Iocykgb3IgY29weXJpZ2h0Cm93bmVyKSBncmFudHMgdG8gRFNwYWNlIFVuaXZlcnNpdHkgKERTVSkgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgdG8gcmVwcm9kdWNlLAp0cmFuc2xhdGUgKGFzIGRlZmluZWQgYmVsb3cpLCBhbmQvb3IgZGlzdHJpYnV0ZSB5b3VyIHN1Ym1pc3Npb24gKGluY2x1ZGluZwp0aGUgYWJzdHJhY3QpIHdvcmxkd2lkZSBpbiBwcmludCBhbmQgZWxlY3Ryb25pYyBmb3JtYXQgYW5kIGluIGFueSBtZWRpdW0sCmluY2x1ZGluZyBidXQgbm90IGxpbWl0ZWQgdG8gYXVkaW8gb3IgdmlkZW8uCgpZb3UgYWdyZWUgdGhhdCBEU1UgbWF5LCB3aXRob3V0IGNoYW5naW5nIHRoZSBjb250ZW50LCB0cmFuc2xhdGUgdGhlCnN1Ym1pc3Npb24gdG8gYW55IG1lZGl1bSBvciBmb3JtYXQgZm9yIHRoZSBwdXJwb3NlIG9mIHByZXNlcnZhdGlvbi4KCllvdSBhbHNvIGFncmVlIHRoYXQgRFNVIG1heSBrZWVwIG1vcmUgdGhhbiBvbmUgY29weSBvZiB0aGlzIHN1Ym1pc3Npb24gZm9yCnB1cnBvc2VzIG9mIHNlY3VyaXR5LCBiYWNrLXVwIGFuZCBwcmVzZXJ2YXRpb24uCgpZb3UgcmVwcmVzZW50IHRoYXQgdGhlIHN1Ym1pc3Npb24gaXMgeW91ciBvcmlnaW5hbCB3b3JrLCBhbmQgdGhhdCB5b3UgaGF2ZQp0aGUgcmlnaHQgdG8gZ3JhbnQgdGhlIHJpZ2h0cyBjb250YWluZWQgaW4gdGhpcyBsaWNlbnNlLiBZb3UgYWxzbyByZXByZXNlbnQKdGhhdCB5b3VyIHN1Ym1pc3Npb24gZG9lcyBub3QsIHRvIHRoZSBiZXN0IG9mIHlvdXIga25vd2xlZGdlLCBpbmZyaW5nZSB1cG9uCmFueW9uZSdzIGNvcHlyaWdodC4KCklmIHRoZSBzdWJtaXNzaW9uIGNvbnRhaW5zIG1hdGVyaWFsIGZvciB3aGljaCB5b3UgZG8gbm90IGhvbGQgY29weXJpZ2h0LAp5b3UgcmVwcmVzZW50IHRoYXQgeW91IGhhdmUgb2J0YWluZWQgdGhlIHVucmVzdHJpY3RlZCBwZXJtaXNzaW9uIG9mIHRoZQpjb3B5cmlnaHQgb3duZXIgdG8gZ3JhbnQgRFNVIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdApzdWNoIHRoaXJkLXBhcnR5IG93bmVkIG1hdGVyaWFsIGlzIGNsZWFybHkgaWRlbnRpZmllZCBhbmQgYWNrbm93bGVkZ2VkCndpdGhpbiB0aGUgdGV4dCBvciBjb250ZW50IG9mIHRoZSBzdWJtaXNzaW9uLgoKSUYgVEhFIFNVQk1JU1NJT04gSVMgQkFTRUQgVVBPTiBXT1JLIFRIQVQgSEFTIEJFRU4gU1BPTlNPUkVEIE9SIFNVUFBPUlRFRApCWSBBTiBBR0VOQ1kgT1IgT1JHQU5JWkFUSU9OIE9USEVSIFRIQU4gRFNVLCBZT1UgUkVQUkVTRU5UIFRIQVQgWU9VIEhBVkUKRlVMRklMTEVEIEFOWSBSSUdIVCBPRiBSRVZJRVcgT1IgT1RIRVIgT0JMSUdBVElPTlMgUkVRVUlSRUQgQlkgU1VDSApDT05UUkFDVCBPUiBBR1JFRU1FTlQuCgpEU1Ugd2lsbCBjbGVhcmx5IGlkZW50aWZ5IHlvdXIgbmFtZShzKSBhcyB0aGUgYXV0aG9yKHMpIG9yIG93bmVyKHMpIG9mIHRoZQpzdWJtaXNzaW9uLCBhbmQgd2lsbCBub3QgbWFrZSBhbnkgYWx0ZXJhdGlvbiwgb3RoZXIgdGhhbiBhcyBhbGxvd2VkIGJ5IHRoaXMKbGljZW5zZSwgdG8geW91ciBzdWJtaXNzaW9uLgo=Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2016-02-11T23:24:07Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.pt_BR.fl_str_mv |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
title |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
spellingShingle |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants König, Ricardo Bessler Marine Microalga Conticribra weissflogii Thalassiosira weissflogii Flocculation Flopam |
title_short |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
title_full |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
title_fullStr |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
title_full_unstemmed |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
title_sort |
Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants |
author |
König, Ricardo Bessler |
author_facet |
König, Ricardo Bessler Sales, Rafael Roselet, Fabio Abreu, Paulo Cesar Oliveira Vergne de |
author_role |
author |
author2 |
Sales, Rafael Roselet, Fabio Abreu, Paulo Cesar Oliveira Vergne de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
König, Ricardo Bessler Sales, Rafael Roselet, Fabio Abreu, Paulo Cesar Oliveira Vergne de |
dc.subject.por.fl_str_mv |
Marine Microalga Conticribra weissflogii Thalassiosira weissflogii Flocculation Flopam |
topic |
Marine Microalga Conticribra weissflogii Thalassiosira weissflogii Flocculation Flopam |
description |
The harvesting of microalgae is currently one of the bottlenecks hindering the commercial production of microalgae-based biofuels and products. The objective of this study was to determine the best flocculant and its optimum concentration in order to harvest the marine microalga Conticribra weissflogii (previously Thalassiosira weissflogii) for further use in the production of biofuels or bioelements. Experiments were conducted with cultures in the logarithmic and stationary growth phases. The low-charge FLOPAM® FO 4240 SH was the most effective at concentrations of 2 and 4 mg m 3 in the LOG phase cultures, with flocculation efficiencies >90%. Smaller flocculation efficiencies were observed for cells in the stationary growth phase, most likely due to the production of dissolved organic carbon by the microalga. The highest microalgae density generated higher flocculation rates, whereas the pH and salinity negatively impacted flocculant efficiency. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014 |
dc.date.accessioned.fl_str_mv |
2016-02-11T23:24:07Z |
dc.date.available.fl_str_mv |
2016-02-11T23:24:07Z |
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.citation.fl_str_mv |
KÖNIG, Ricardo Bessler et al. Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants. Biomass & bioenergy, v. 68, p. 1-6, 2014. Disponível em:< https://www.researchgate.net/publication/263427695_Harvesting_of_the_marine_microalga_Conticribra_weissflogii_Bacillariophyceae_by_cationic_polymeric_flocculants>. Acesso em: 10 Fev. 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.furg.br/handle/1/5907 |
dc.identifier.issn.none.fl_str_mv |
0961-9534 |
dc.identifier.doi.pt_BR.fl_str_mv |
10.1016/j.biombioe.2014.06.001 |
identifier_str_mv |
KÖNIG, Ricardo Bessler et al. Harvesting of the marine microalga conticribra weissflogii (bacillariophyceae) by cationic polymeric flocculants. Biomass & bioenergy, v. 68, p. 1-6, 2014. Disponível em:< https://www.researchgate.net/publication/263427695_Harvesting_of_the_marine_microalga_Conticribra_weissflogii_Bacillariophyceae_by_cationic_polymeric_flocculants>. Acesso em: 10 Fev. 2016. 0961-9534 10.1016/j.biombioe.2014.06.001 |
url |
http://repositorio.furg.br/handle/1/5907 |
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eng |
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