Bioethanol from Spirulina platensis biomass and the use of residuals to produce biomethane: An energy efficient approach

Rempel, Alan; Sossella, Francine de Souza; Margarites, Ana Cláudia; Astolfi, Angela Luiza; Steinmetz, R. L. R.; Kunz, Airton; Treichel, Helen; Colla, Luciane Maria

doi:10.1016/j.biortech.2019.121588

Cited by 84 publications

(24 citation statements)

References 41 publications

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“…In addition to biodiesel production, the residual biomass also contains proteins, sugars and carbohydrates that can be used towards the production of bioethanol and biomethane [71][72][73]. In this context, the production of bioethanol by hydrolysis of the Spirulina sp.…”

Section: Biofuels From Microalgae In Brazilmentioning

confidence: 99%

“…In a next step, the wastes of the enzymatic saccharification and alcoholic fermentation of Spirulina sp. LEB-18 residues were successfully utilized to produce biomethane through anaerobic digestion in a pilot-plant located at Embrapa Swine and Poultry (Concórdia, Santa Catarina, Brazil) [73]. This collaborative process represents a promising alternative to utilize the entire fraction of the microalgal biomass for generation of two combined biofuels products.…”

Section: Biofuels From Microalgae In Brazilmentioning

confidence: 99%

“…Spirulina platensis [73] Biohydrogen Biophotolysis hydrogen generation analyzed through numerical simulations…”

Section: Bioethanol and Biomethanementioning

confidence: 99%

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Advances in Microalgal Research in Brazil

Matos

2021

Braz. arch. biol. technol.

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Microalgae research has attracted interest worldwide and in order to advance algal biotechnology in Brazil, government has been funding several projects. In the last 10 years, two main funds were provided by the National Council of Scientific and Technological Development (CNPq) agency to researchers in Brazil, who study the potential uses of microalgae for biomass, bioproducts and biofuels production. These funded projects addressed aspects of algal strain identification, development of algal cultivation techniques, designing photobioreactors and raceway ponds, modeling harvesting and dewatering process, maximizing biomass and oil productivities, characterizing chemical composition with different extractions systems and determining physiochemical properties of biodiesel. This review presents the state of art of algal research conducted by Brazilian institutions. Special attention is given to the recent progress on microalgal cultivation, high-value products extracted from microalgae and potential biofuels production. This review may serve as a policy instrument for planning next steps for algal research in Brazil as well as for attracting attention from international researchers who work with microalgae and would like to pursue a future partnership on algal research with Brazilian research institutions.

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Section: Biofuels From Microalgae In Brazilmentioning

confidence: 99%

Section: Biofuels From Microalgae In Brazilmentioning

confidence: 99%

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Advances in Microalgal Research in Brazil

Matos

2021

Braz. arch. biol. technol.

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“…Rempel et al [ 69 ], with the intention of studying Spirulina platensis biomass as a source of renewable fuels, found that it was possible to achieve 83% fermentation of carbohydrates obtained from biomass for the production of bioethanol. Using the residual biomass from this production, biomethane was generated with a great energy potential, around 13945 kJ·kg −1 , confirming the use of cyanobacteria biomass as a good source for the production of biofuels.…”

Section: Cyanobacteria and Microalgae At Brazilmentioning

confidence: 99%

Advances in the Biotechnological Potential of Brazilian Marine Microalgae and Cyanobacteria

Oliveira

Costa

et al. 2020

Molecules

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Due the worldwide need to improve care for the environment and people, there is a great demand for the development of new renewable, sustainable, and less polluting technologies for food, health, and environmental industries. The marine environment is one of the main areas investigated in the search for alternatives to the raw materials currently used. Thereby, cyanobacteria and marine microalgae are microorganisms that are capable of producing a diverse range of metabolites useful for their cellular maintenance, but that also represent a great biotechnological potential. Due its great potential, they have an enormous appeal in the scientific research where, the biological activity of metabolites produced by these microorganisms, such as the antioxidant action of sterols are, some examples of biotechnological applications investigated around the world. Thereby, Brazil due to its extensive biodiversity, has high potential as a raw material supplier of marine waters, researching cyanobacteria and microalgae metabolites and their applications. Thus, this rapid review intends to present some important contributions and advances from Brazilian researchers, using the biomass of Brazilian cyanobacteria and marine microalgae, in order to illustrate the value of what has already been discovered and the enormous potential of what remains unexplored so far.

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“…Em comparação às outras fontes de energia, as microalgas são consideradas uma alternativa promissora para a produção de biocombustíveis, uma vez que apresentam uma série de vantagens, tais como: ausência de competição com a produção de alimentos por terras agricultáveis, maior produção de energia por área em relação as culturas convencionais, possibilidade de cultivo em água do mar ou em efluentes, alto rendimento de óleo etc (SU et al, 2017;SARATALE et al, 2018;REMPEL et al, 2019;RUAN et al, 2019).…”

Section: Introductionunclassified

Viabilidade Da Utilização Do Sobrenadante De Cultivo Algal Como Fertirrigante

Nazari

Mazutti

Colla

et al. 2020

R. gest. sust. ambient.

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Vários métodos podem ser empregados para realizar a etapa de colheita das microalgas, sendo a centrifugação um dos mais utilizados. Nessa separação sólido-líquido, a biomassa é encaminhada às etapas subsequentes, enquanto que o sobrenadante geralmente é descartado. A fim de buscar uma forma de reutilização desse efluente, este trabalho objetivou verificar a fitotoxicidade do sobrenadante proveniente de cultivos algais, a fim de utilizá-lo como fertirrigante. Para tanto, um planejamento experimental fatorial completo 2³ com adição de 5 pontos centrais foi realizado, totalizando 13 experimentos. Os fatores analisados foram: volume de sobrenadante (50%, 75% e 100%); temperatura (20 °C, 25 °C e 30 °C) e; fotoperíodo (12h, 15h e 18h). A variável resposta foi o índice de germinação (IG) de sementes de pepino, obtida através de ensaios de fitotoxicidade. Maiores IG foram obtidos nas menores concentrações de sobrenadante e de temperatura. Contudo, inibições severas e moderadas também foram observadas através do IG, inferindo que, em determinadas condições, o sobrenadante apresenta características fitotóxicas ao bioindicador testado. Ainda, verificou-se que o fator fotoperíodo não apresentou efeito principal e de interação sobre a variável resposta, o que justifica a desconsideração desse fator em estudos posteriores. Com isso, é possível fixar o fotoperíodo no nível mais baixo (12 h), o que diminui o consumo de energia e se aproxima ao tempo de fotoperíodo para aplicação real. Por fim, a análise SWOT destacou aspectos relacionados à sustentabilidade dessa prática, justificando a necessidade de desenvolver mais pesquisas que possam contribuir pro conceito de biorefinarias integradas.

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Bioethanol from Spirulina platensis biomass and the use of residuals to produce biomethane: An energy efficient approach

Cited by 84 publications

References 41 publications

Advances in Microalgal Research in Brazil

Advances in Microalgal Research in Brazil

Advances in the Biotechnological Potential of Brazilian Marine Microalgae and Cyanobacteria

Viabilidade Da Utilização Do Sobrenadante De Cultivo Algal Como Fertirrigante

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