Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista ciência agronômica (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100404 |
Resumo: | ABSTRACT Microalgae are commonly used in aquiculture as feed for postlarval mollusks, fish and crustaceans because they are easy to grow, small in size, grow rapidly and have high levels of fatty acids. These microorganisms also accumulate high amounts of oil, which can be extracted and converted into biodiesel using chemical processes. In this work, freshwater microalgae Chlorella vulgaris was grown in the Live Food Production Laboratory (LABPAV/IFCE Aracati Campus), with urea (stock solution 1), triple superphosphate (stock solution 2) and vitamins (stock solution 3), in growth medium, in triplicate, using three different quantities of stock solutions 1 and 2, but with a constant amount of vitamins. The quantities of 0.5, 1 and 2 mL (T0.5, T1 and T2, respectively) were used for both stock solutions. We then monitored the growth of the microalgae, flocculated through chemical flocculation by adding a NaOH 2N solution, air-oven dried at 60 ºC for 24 hours, weighed the dried biomass on a semi-analytical balance, and extracted the oil using solvents. We thus observed that algal growth intensified and dry biomass increased as the amount of nutrients increased in the growth media; inversely, the best oil level was observed in the treatment using the lowest amount of nutrients in the growth media where the microalgae developed (20.13±0.19%). Finally, in Treatment T2, even with the lowest percentage of oil (18.95%), the amount of biomass produced compensates in the oil productivity, and using a lower amount of nutrients in the media of culture. |
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Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel productionBiodieselMicroalgaeOilABSTRACT Microalgae are commonly used in aquiculture as feed for postlarval mollusks, fish and crustaceans because they are easy to grow, small in size, grow rapidly and have high levels of fatty acids. These microorganisms also accumulate high amounts of oil, which can be extracted and converted into biodiesel using chemical processes. In this work, freshwater microalgae Chlorella vulgaris was grown in the Live Food Production Laboratory (LABPAV/IFCE Aracati Campus), with urea (stock solution 1), triple superphosphate (stock solution 2) and vitamins (stock solution 3), in growth medium, in triplicate, using three different quantities of stock solutions 1 and 2, but with a constant amount of vitamins. The quantities of 0.5, 1 and 2 mL (T0.5, T1 and T2, respectively) were used for both stock solutions. We then monitored the growth of the microalgae, flocculated through chemical flocculation by adding a NaOH 2N solution, air-oven dried at 60 ºC for 24 hours, weighed the dried biomass on a semi-analytical balance, and extracted the oil using solvents. We thus observed that algal growth intensified and dry biomass increased as the amount of nutrients increased in the growth media; inversely, the best oil level was observed in the treatment using the lowest amount of nutrients in the growth media where the microalgae developed (20.13±0.19%). Finally, in Treatment T2, even with the lowest percentage of oil (18.95%), the amount of biomass produced compensates in the oil productivity, and using a lower amount of nutrients in the media of culture.Universidade Federal do Ceará2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100404Revista Ciência Agronômica v.51 n.1 2020reponame:Revista ciência agronômica (Online)instname:Universidade Federal do Ceará (UFC)instacron:UFC10.5935/1806-6690.20200008info:eu-repo/semantics/openAccessAraujo,Glacio SouzaLopes,Dilliani Naiane MascenaSantiago,Clarice da SilvaSilva,José William Alves daFernandes,Fabiano André Narcisoeng2020-01-29T00:00:00Zoai:scielo:S1806-66902020000100404Revistahttp://www.ccarevista.ufc.br/PUBhttps://old.scielo.br/oai/scielo-oai.php||alekdutra@ufc.br|| ccarev@ufc.br1806-66900045-6888opendoar:2020-01-29T00:00Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
title |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
spellingShingle |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production Araujo,Glacio Souza Biodiesel Microalgae Oil |
title_short |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
title_full |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
title_fullStr |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
title_full_unstemmed |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
title_sort |
Influence of nutrients on biomass and oil yield from microalgae Chlorella vulgaris for biodiesel production |
author |
Araujo,Glacio Souza |
author_facet |
Araujo,Glacio Souza Lopes,Dilliani Naiane Mascena Santiago,Clarice da Silva Silva,José William Alves da Fernandes,Fabiano André Narciso |
author_role |
author |
author2 |
Lopes,Dilliani Naiane Mascena Santiago,Clarice da Silva Silva,José William Alves da Fernandes,Fabiano André Narciso |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Araujo,Glacio Souza Lopes,Dilliani Naiane Mascena Santiago,Clarice da Silva Silva,José William Alves da Fernandes,Fabiano André Narciso |
dc.subject.por.fl_str_mv |
Biodiesel Microalgae Oil |
topic |
Biodiesel Microalgae Oil |
description |
ABSTRACT Microalgae are commonly used in aquiculture as feed for postlarval mollusks, fish and crustaceans because they are easy to grow, small in size, grow rapidly and have high levels of fatty acids. These microorganisms also accumulate high amounts of oil, which can be extracted and converted into biodiesel using chemical processes. In this work, freshwater microalgae Chlorella vulgaris was grown in the Live Food Production Laboratory (LABPAV/IFCE Aracati Campus), with urea (stock solution 1), triple superphosphate (stock solution 2) and vitamins (stock solution 3), in growth medium, in triplicate, using three different quantities of stock solutions 1 and 2, but with a constant amount of vitamins. The quantities of 0.5, 1 and 2 mL (T0.5, T1 and T2, respectively) were used for both stock solutions. We then monitored the growth of the microalgae, flocculated through chemical flocculation by adding a NaOH 2N solution, air-oven dried at 60 ºC for 24 hours, weighed the dried biomass on a semi-analytical balance, and extracted the oil using solvents. We thus observed that algal growth intensified and dry biomass increased as the amount of nutrients increased in the growth media; inversely, the best oil level was observed in the treatment using the lowest amount of nutrients in the growth media where the microalgae developed (20.13±0.19%). Finally, in Treatment T2, even with the lowest percentage of oil (18.95%), the amount of biomass produced compensates in the oil productivity, and using a lower amount of nutrients in the media of culture. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
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=S1806-66902020000100404 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000100404 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/1806-6690.20200008 |
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 |
Universidade Federal do Ceará |
publisher.none.fl_str_mv |
Universidade Federal do Ceará |
dc.source.none.fl_str_mv |
Revista Ciência Agronômica v.51 n.1 2020 reponame:Revista ciência agronômica (Online) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Revista ciência agronômica (Online) |
collection |
Revista ciência agronômica (Online) |
repository.name.fl_str_mv |
Revista ciência agronômica (Online) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
||alekdutra@ufc.br|| ccarev@ufc.br |
_version_ |
1750297489781555200 |