Development of extended shelf-life microalgae concentrate diets harvested by centrifugation for bivalve molluscs - a summary

Heasman, Michael P.; Diemar, John A.; O’Connor, Wayne A.; Sushames, T; Foulkes, L

doi:10.1046/j.1365-2109.2000.318492.x

Cited by 86 publications

(124 citation statements)

References 32 publications

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“…The residence time of the slurry in the centrifuge can be controlled by controlling the flow rate. Heasman et al (2000) evaluated the extent of cell recovery and the effects of cell viability at different conditions of centrifugation. Nine different strains of microalgae were assessed .…”

Section: Centrifugal Recoverymentioning

confidence: 99%

See 1 more Smart Citation

Recovery of microalgal biomass and metabolites: process options and economics

Grima

Belarbi

Fernández

et al. 2003

Biotechnology Advances

1,911

705

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Commercial production of intracellular microalgal metabolites requires the following: (1) largescale monoseptic production of the appropriate microalgal biomass; (2) recovery of the biomass from a relatively dilute broth; (3) extraction of the metabolite from the biomass; and (4) purification of the crude extract. This review examines the options available for recovery of the biomass and the intracellular metabolites from the biomass. Economics of monoseptic production of microalgae in photobioreactors and the downstream recovery of metabolites are discussed using eicosapentaenoic acid (EPA) recovery as a representative case study. D

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Section: Centrifugal Recoverymentioning

confidence: 99%

“…Centrifugal recovery can be rapid, but it is energy intensive. Nevertheless, centrifugation is a preferred method of recovering algal cells (Benemann et al, 1980;Mohn, 1980;Richmond, 1986), especially for producing extended shelf-life concentrates for aquaculture hatcheries and nurseries (D'Souza et al, 2000;Heasman et al, 2000).…”

Section: Centrifugal Recoverymentioning

confidence: 99%

Recovery of microalgal biomass and metabolites: process options and economics

Grima

Belarbi

Fernández

et al. 2003

Biotechnology Advances

1,911

705

View full text Add to dashboard Cite

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“…Os floculantes inorgânicos como o Al 2 (SO 4 ) 3 (Sulfato de alumínio), Fe 2 (SO 4 ) 3 (Sulfato férrico), FeCl 3 (Cloreto férrico), ou Ca(OH) 2 (cal) são utilizados para neutralizar ou reduzir a carga de superfície negativa das células provocando a formação de flocos (LARDON et al, 2009;HEASMAN et al, 2000).…”

Section: Processo De Colheita Da Biomassaunclassified

Produção de Bioetanol Utilizando Microalgas: Uma Revisão

et al. 2016

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ResumoA busca por biocombustíveis foi impulsionada nas ultimas décadas devido à preocupação com o esgotamento das fontes enérgicas não renováveis. Essa revisão de literatura oferece uma abordagem da aplicação de microrganismos para a produção de bioetanol, com ênfase para as microalgas. A elevada eficiência de conversão fotossintética, o rápido crescimento, a possibilidade de manipulação do meio de cultivo a fim de produzir biomassa com elevado teor de lípidos e carboidratos, e o uso de áreas com baixa aptidão agrícola fazem das microalgas uma das matérias primas mais promissoras para a produção de biocombustíveis. A existência de uma grande variedade de métodos para a obtenção de biomassa microalgal e posterior produção de bioetanol, estimulou diversos estudos para aumentar o potencial de produção e aperfeiçoar o processo. Estudos apontam que para a produção de bioetanol atingir viabilidade econômica, a produção da biomassa algal deve objetivar ainda a obtenção de outros compostos, de maior valor agregado, como pigmentos, proteínas, ácidos graxos poli-insaturados, obedecendo ao conceito das biorrefinarias integradas. The search for biofuels has been driven in recent decades due to concern over the depletion of nonrenewable energetic sources. This literature review provides an approach to the application of microorganisms for the production of bioethanol, with emphasis on microalgae. The high efficiency of photosynthetic conversion, rapid growth, the possibility of manipulation of the medium to produce biomass with high fat and carbohydrates, and the use of areas with low agricultural potential of microalgae are one of the most promising raw materials for the production of biofuels. The existence of a large variety of methods for obtaining microalgal and subsequent production of bioethanol, biomass stimulated numerous studies to increase the production potential and improve the process. Studies show that for the production of bioethanol achieve economic viability, production of algal biomass should also aim at obtaining other compounds with higher added value, such as pigments, proteins, polyunsaturated fatty acids, according to the concept of integrated biorefineries.

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“…The settling depth can be kept small by the design of the centrifuge, and the resident time of the slurry can be controlled by the flow rate. The centrifugal recovery of the biomass is feasible for high-value products because it can process large volumes relatively rapidly, and the biomass remains fully contained during recovery (Heasman et al, 2000). Filtration, which operates under pressure or vacuum, is the preferred method for harvesting relatively large filamentous microalgae; however, the small cells of microalgae are not suitable, while membrane microfiltration and ultrafiltration are possible alternatives.…”

Section: Harvesting Of the Microalgae Biomassmentioning

confidence: 99%

A Review: Microalgae and Their Applications in CO2 Capture and Renewable Energy

Klinthong

Yang

Huang

et al. 2015

Aerosol Air Qual. Res.

218

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Fossil fuels, which are recognized as unsustainable sources of energy, are continuously consumed and decreased with increasing fuel demands. Microalgae have great potential as renewable fuel sources because they possess rapid growth rate and the ability to store high-quality lipids and carbohydrates inside their cells for biofuel production. Microalgae can be cultivated on opened or closed systems and require nutrients and CO 2 that may be supplied from wastewater and fossil fuel combustion. In addition, CO 2 capture via photosynthesis to directly fix carbon into microalgae has also attracted the attention of researchers. The conversion of CO 2 into chemical and fuel (energy) products without pollution via this approach is a promising way to not only reduce CO 2 emissions but also generate more economic value. The harvested microalgal biomass can be converted into biofuel products, such as biohydrogen, biodiesel, biomethanol, bioethanol, biobutanol and biohydrocarbons. Thus, microalgal cultivation can contribute to CO 2 fixation and can be a source of biofuels. This article reviews the literature on microalgae that were cultivated using captured CO 2 , technologies related to the production of biofuels from microalgae and the possible commercialization of microalgae-based biofuels to demonstrate the potential of microalgae. In this respect, a number of relevant topics are addressed: the nature of microalgae (e.g., species and composition); CO 2 capture via microalgae; the techniques for microalgal cultivation, harvesting and pretreatment; and the techniques for lipid extraction and biofuel production. The strategies for biofuel commercialization are proposed as well.

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Development of extended shelf-life microalgae concentrate diets harvested by centrifugation for bivalve molluscs - a summary

Cited by 86 publications

References 32 publications

Recovery of microalgal biomass and metabolites: process options and economics

Recovery of microalgal biomass and metabolites: process options and economics

Produção de Bioetanol Utilizando Microalgas: Uma Revisão

A Review: Microalgae and Their Applications in CO2 Capture and Renewable Energy

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