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Cultivation of Microalgae <i>Monoraphidium</i>sp., in the Plant Pilot the grand valle bio energy, for biodiesel Production

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Natural Science 2015年第7期7卷 370-378页

作者： Gisel Chenard Díaz Yordanka Reyes Cruz René González Carliz Rosa C. Vitorino de Paula Donato A. Gomes Aranda Marcellus A. G. Dario Gustavo Saraiva Marass Nelson C. Furtado grand valle bio energy ltda. Rio de Janeiro Brazil Greentec Laboratory School of Chemistry Federal University of Rio de Janeiro Rio de Janeiro Brazil Brazilian Center for Physical Researches Rio de Janeiro Brazil

At present, Brazil imports approximately 11 billion liters/year of diesel. With the interruption of the works in the new Petrobras refineries, the projection is that by 2025 this volume will increase to 24.2 billion liters of diesel/year. In this sense, the biodiesel factory grand valle bio energy ltda., located in the state of Rio de Janeiro, in conjunction with the FAPERJ makes some investments in technology development for the cultivation and use of microalgae as an alternative raw material in the production of biodiesel. Based on arguments previously said, this work presents the results of the microalgae cultivation Monoraphidium sp. in photobioreactors the pilot plant of the company. The installation with an area of 120 m2 is included with 2 open photobioreactors of type falling film (20 m × 1 m), with a cascade of 18mm and capacity of 4000 L. The lineage cultivated is selected from previous ecophysiological studies that are identified as promising for biodiesel production by having a high potential for the production of lipids. This lineage is maintained at collection of the stock of cultures Laboratory of Green Technologies of the School of Chemistry/ UFRJ. The cultivation was performed in means ASM-1 (Gorham et al., 1964), initial pH 8.0, with aeration and circulation average of 8 hours a day during 19 days. The culture was started with an inoculum of 1 × 107 cel/ml. The lipid production was determined in two phases of growth: on day 4 (exponential phase) and 15 day (stationary phase). For the determination and quantification of lipid content, two different methods were assessed for a sample of biomass, submitted to the same processes the separation and drying. The results showed the methodology of Bligh & Dyer with modifications as the most efficient in extracting lipids. The total lipid content of the biomass Monoraphidium sp. was 30.58%. The growth rate varied between 0.74 ± 0.01 and 0.68 ± 0.02.

关键词： Cultivation Photobioreactors Microalgae biodiesel

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biodiesel Production Based in Microalgae: A biorefinery Approach

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Natural Science 2015年第7期7卷 358-369页

作者： Lauren Espinosa González Gisel Chenard Díaz Donato Alexandre Gomes Aranda Yordanka Reyes Cruz Mariana Monteiro Fortes Greentec Laboratory School of Chemistry Federal University of Rio de Janeiro Rio de Janeiro Brazil grand valle bio energy Ltd. Biodiesel Factory Porto Real Rio de Janeiro Brazil

It is of great knowledge nowadays that the use of fossil fuels is responsible for the emission of gases that intensify the greenhouse effect, which threatens the survival of the humankind. The gravity of this fact could be mitigated through the indirect use of solar energy for fuels derived from vegetable that can be planted and cultivated by the world of renewable and non-polisher. Microalgae play an important role in this regard, as they have promising characteristics as potential raw material for the production of biofuels, able to absorb large amounts of CO2. Chlorophyll organisms convert these simple substances in the atmosphere, absorbing sunlight into chemical energy stored, that is, compounds with high energy, biomass can also be used to obtain biocompounds human nutritional supplement and food animal, however, have been found an important number of difficulties to economically viable production like high cost of production of dry biomass and oil extraction. Here, we review the main approaches of biorefinery concept appearing as an alternative to achieve economic viability of the production of bio-diesel based on microalgae. The major points are the following: 1) use of re-residual water, 2) marketing of Carbon Credits, and 3) development of co-products resulting from high value added.

关键词： biodiesel biorefinery Microalgae

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