Cinética de crescimento da microalga Pseudokirchneriella subcaptata (Korshikov) Hindak (Chlorophyceae) em água natural enriquecida com o fertilizante NPK

Carvalho, Emerson Machado de; Ottonelli, Franciéli; Ansilago, Mônica; Godoy, Hânia Cardamoni; Nakagaki, Jelly Makoto; Ramires, I.

doi:10.5433/2316-5200.2012v1n2p14

Cited by 5 publications

(12 citation statements)

References 4 publications

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“…It was observed that Pseudokirchneriella subcapitata presented the highest maximum specific growth rate (μ max ) and the shortest doubling time (DT), with values of 0.12 day -1 and 5.40 days, respectively (Table 1). It was reported elsewhere an exponential growth rate of 0.11 to 0.13 day -1 for P. subcapitata cultivated in NPK (Carvalho et al, 2012).…”

Section: Resultsmentioning

confidence: 78%

Characterization of different microalgae cultivated in open ponds

et al. 2019

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Microalga is one of the main sources of biomasses for the production of biofuels in the 21st century. Many labs and industries around the world are seeking for more productive strains and better cultivation models. The aim of this work was to evaluate the growth and kinetic parameters of six microalgae, and the moisture and lipid contents and fatty acids profiles of the biomasses harvested at the end of each cultivation. The microalgae were isolated in the Mid-Western Region of Brazil cultivated in open pond systems. It was observed that among the six microalgae used in this work, Pseudokirchneriella subcapitata presented the higher maximum specific growth rate (μmax) (0.12 day-1). The microalgae Coelastrum sp. and P. subcapitata were the ones with the highest lipid contents, with approximately 20% of dry mass. The main fatty acid accumulated in these conditions was palmitic acid, with percentages of 59 to 69% for all microalgae evaluated. Other factors that had influenced results from cultivations in open ponds were discussed here.

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Section: Resultsmentioning

confidence: 78%

Characterization of different microalgae cultivated in open ponds

et al. 2019

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“…O cultivo foi realizado na diluição de 30% de vinhaça, em triplicata, tendo como controle e padrão de comparação o adubo químico N:P:K (0,02:0,005:0,02 kg L -1 ) (HARDY & CASTRO, 2000;SIPAUBA-TAVARES & ROCHA, 2003;SIPAUBA-TAVARES & PEREIRA, 2008;CARVALHO et al, 2012) na concentração de 1%, também em triplicata. Esta fonte de nutriente foi escolhida em função de ser o adubo químico utilizado no cultivo da cana-deaçúcar.…”

Section: Metodologiaunclassified

Cultivo De Microalga Em Meio Alternativo Enriquecido Com Vinhaça Para Indicativo De Potencialidade Na Produção De Biocombustíveis

Fogaça¹,

Moraes²,

Oliveira³

et al. 2016

Anais Do XIV Encontro Nacional De Estudantes De Engenharia Ambiental

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Resumo: A produção de etanol cresceu significativamente nos últimos anos e concomitantemente a isso, aumentou também a produção de vinhaça, que é um efluente de alto teor poluente quando descartado de maneira indevida na natureza. Ainda na busca pela substituição de combustíveis fósseis por combustíveis renováreis, embora de forma mais discreta, o biodiesel tem aos poucos adentrado ao setor energético e pesquisas recentes estudam a viabilidade de utilizar óleo extraído de microalgas para sua produção. Diante disso, este trabalho teve por objetivo avaliar a potencialidade da vinhaça como fonte nutricional para o cultivo da microalga Chlorella sorokiniana e monitorar fatores que possam vir a influenciar seu desenvolvimento, visando a futura produção de biodiesel. Para tal, realizou-se o cultivo da microalga na diluição de 30% de vinhaça por um período total de 60 dias, com aeração constante e fotoperíodo de 12 horas luz/12 horas escuro, tendo como controle e meio de referência ensaios na diluição de 1% de adubo químico N:P:K (0,02:0,005:0,02 kg L -1 ), nas mesmas condições. Os parâmetros monitorados foram pH e turbidez do meio. Os resultados obtidos apontaram que para as condições estudadas a vinhaça na concentração de 30% se mostrou mais eficiente do que o cultivo com N:P:K (controle) na produção de biomassa.Palavras-chave: Microalgas, Monitoramento, Vinhaça, Cultivo, Biocombustíveis.

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“…In this scenario, there is a possibility of increasing concentration of contaminants in wastewater, which would require adequate treatment for these effluents (Mahapatra et al, 2014), with the goal of reducing environmental impacts. These contaminants may present a wide variety of organic and inorganic materials, including toxic metals that pose high risks to aquatic environments (Carvalho et al, 2012;Zhang et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they are an energy source (Priyadarshani and Rath, 2012) and present high market value due to the low costs of the production process. In this strategy, it is possible to use the organism for production of bioactive compounds and surfactants, for different uses in biofuels, biofertilizers, biopolymers, biofilms, among many others (Carvalho et al, 2012;Schmitz et al, 2012;Gouveia et al, 2016). Some factors are important to regulate the kinetics growth of microalgae and contribute with high production of algal biomass; for instance, the concentration of nutrients present in the medium, the luminosity and the temperature (Carvalho et al, 2012;Wang et al, 2014;Ansilago et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Metals bioremediation potential using Pseudokirchneriella subcapitata

Ansilago

Ottonelli

Carvalho

2021

Rev. Bras. Ciênc. Ambient. (Online)

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Microalgae are unicellular organisms, photosynthesizers that present cell duplication exponentially and biosorption capacity of nutrients dissolved in water. The objective of this work was to evaluate the capacity of the microalga Pseudokirchneriella subcapitata for bioremediation of metals and salts. In this aspect, the reduction of the metals and salts in the synthetic effluents by the microalga P. subcapitata was evaluated: (T1) culture medium (control); (T2) culture medium contaminated with aluminum chloride; (T3) culture medium contaminated with ferrous sulfate; (T4) culture medium contaminated with zinc sulfate; (T5) culture medium contaminated with the combination of aluminum chloride, ferrous sulfate and zinc sulfate. The bioremediation process was evaluated by comparing culture media with suspended microalgae to a filtrate version of the same medium. Iron and zinc metals, as well as nitrogen and phosphorus salts, showed depleted values in the filtered medium, indicating efficiency in the treatment of water by microalgae. Aluminum content was below the limit of detection in all treatments. The cumulative values in the microalgae biomass were, in descending order: nitrogen, zinc, iron and phosphorus, thus indicating the assimilation of the contaminants in the algal biomass. In addition, high biomass production of the microalgae was observed. The highest production rate was verified in the synthetic effluent with the association of metals, indicating a synergy between contaminants, which was probably responsible for reducing the toxic effect on the microalgae. These results indicated high potential for bioremediation by microalga P. subcapitata, besides the possibility of using algal biomass for biotechnological applications.

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Cinética de crescimento da microalga Pseudokirchneriella subcaptata (Korshikov) Hindak (Chlorophyceae) em água natural enriquecida com o fertilizante NPK

Cited by 5 publications

References 4 publications

Characterization of different microalgae cultivated in open ponds

Characterization of different microalgae cultivated in open ponds

Cultivo De Microalga Em Meio Alternativo Enriquecido Com Vinhaça Para Indicativo De Potencialidade Na Produção De Biocombustíveis

Metals bioremediation potential using Pseudokirchneriella subcapitata

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