Biofixation of carbon dioxide by Spirulina sp. and Scenedesmus obliquus cultivated in a three-stage serial tubular photobioreactor

Morais, Michele Greque de; Costa, Jorge Alberto Vieira

doi:10.1016/j.jbiotec.2007.01.009

Cited by 493 publications

(179 citation statements)

References 23 publications

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“…The integrity of the data from chamber studies relies heavily on the reliability of measurements (Baker et al, 2004). At present, we were only able to locate a single study in the literature that assessed the accuracy of a sealed chamber when making estimates of CO 2 uptake (Acock and Acock, 1989), with the majority of studies not discussing this experimental aspect despite its relevance to CO 2 uptake determinations (De Morais and Costa, 2007;Ohashi et al, 2005;Pringault et al, 1996). We have therefore developed a mathematical model that takes into account experimental uncertainties such as outgassing and abiotic interactions.…”

Section: Introductionmentioning

confidence: 99%

CO2 uptake by a soil microcosm

Hart

Oppenheimer

Moran

et al. 2013

Soil Biology and Biochemistry

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CO 2 enrichment a b s t r a c t Sequestration of CO 2 via biological sinks is a matter of great scientific importance due to the potential lowering of atmospheric CO 2 . In this study, a custom built incubation chamber was used to cultivate a soil microbial community to instigate chemoautotrophy of a temperate soil. Real-time atmospheric CO 2 concentrations were monitored and estimations of total CO 2 uptake were made. After careful background flux corrections, 4.52 AE 0.05 g CO 2 kg À1 dry soil was sequestered from the chamber atmosphere over 40 h. Using isotopically labelled 13 CO 2 and GCMSeIRMS, labelled fatty acids were identified after only a short incubation, hence confirming CO 2 sequestration for soil. The results of this in vivo study provide the ground work for future studies intending to mimic the in situ environment by providing a reliable method for investigating CO 2 uptake by soil microorganisms.

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Section: Introductionmentioning

confidence: 99%

CO2 uptake by a soil microcosm

Hart

Oppenheimer

Moran

et al. 2013

Soil Biology and Biochemistry

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“…In these processes, there is a range of active microorganisms, including microalgae. In this context, it underlines the importance of bioprospecting new strains and species of microalgae not only with environmental and ecological purposes, as the treatment of effluents and biosorption of toxic metals (Mezzomo et al, 2010;Schmitz et al, 2012) and CO 2 biofixation (Morais and Costa, 2007), but also applications of economic interest, as the productions of lipids (Xu et al, 2006) and biofuels (Xu and Mi, 2011). In addition, bioprospecting of species is a preponderant factor for the knowledge of the local biodiversity and for the local sustainable development, besides avoiding the introduction of exotic species.…”

Section: Author(s) Agree That This Article Remains Permanently Open Amentioning

confidence: 99%

Bioprospection of freshwater microalgae from Bonito, MS, Brazil

Silva¹,

Fonseca²

2018

Int. J. Biodivers. Conserv.

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The great biodiversity of the Serra da Bodoquena is the result of years of biological evolution. A complex combination of natural factors allows aquatic plants, fish and invertebrates to coexist in absolutely crystalline water springs. Together, organisms form an intricate web of life, connecting a single-celled microalga with large river predators. For better knowledge of the biodiversity of microalgae, an important tool is the bioprospecting and study of novel species, avoiding as much as possible the introduction of exotic species. Thus, the aim of this work was bioprospecting microalgae species from Bonito, MS, Brazil, in order to obtain more information about the local microbial biodiversity. Freshwater samples were collected from two lakes of the municipality. The samples were plated in Basic Basal medium added of bacteriological agar. After plating, the samples were kept in a biochemical oxygen demand (BOD) oven at 25ºC with photoperiod for growth. After isolation of the obtained colonies, the identification of the species was carried out according to the morphological characteristics of cells. Despite the long periods for adaptation, seven microalgae taxa were successfully isolated from the samples collected, four at the genus level and three at the species level; one from the Trebouxiophyceae class, five from the Chlorophyceae class and one from the Bacillariophyceae class.

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“…Among the known commercially and industrially amenable green resources, algae can provide the highest and cheapest biomass per unit light and area. Simultaneously they can remediate nutrient load or degrade other toxic pollutants in water (Chiu et al, 2015) and reducing atmospheric CO 2 level through carbon fixation process (Morais & Costa, 2007). Moreover, several pharmaceutical products are derived from algal biomass (Yamaguchi, 1997), especially from that of Chlorophytes.…”

Section: Introductionmentioning

confidence: 99%

Chlorococcum humicola (Nageli) Rabenhorst as a Renewable Source of Bioproducts and Biofuel

Kookal¹,

Santhakumaran²,

Ray³

2016

JPS

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Among the diverse new generation biomass yielding species, green algae are the most promising organisms. Compared to biomass production of other organisms, production of algae is less laborious, quite fast, and more economical. Moreover, eutrophicated waters get naturally purified in the cultivation process of algae. Algal biomass from monoculture of specific species, which are rich in carbohydrates, proteins and lipids, is considered a good source of diverse bio-products and feed-stock for food, feeds and bio-fuels. Quantity and quality of algal biomass for specific products depend on the species and strains as well as environmental conditions of cultivation. In this connection, biomass productivity and oil-yield of a local strain of Chlorococcum humicola (Nageli) Rabenhorst was assessed in Bold's Basal Medium. Long-term storage capacity of the alga was tried by entrapping the algal cells in sodium alginate beads, which showed viability up to 14 months. Estimation of total carbohydrate, protein, lipid and chemical characterization of oil as well as the feasibility of its conversion to biodiesel revealed the industrial potential of this local strain as a source of food and biofuel. Fatty acid profiling of the extracted oil showed that 70% are mono-saturated and 12.2 % are nutritionally important polyunsaturated fatty acids. The oil could be effectively trans-esterified to methyl esters and the conversion was confirmed by FTIR spectroscopy. Further standardization of the mass production of the alga in natural environmental conditions for biomass and oil is progressing to optimize its value as globally competent food, nutraceutical and biofuel resource.

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Biofixation of carbon dioxide by Spirulina sp. and Scenedesmus obliquus cultivated in a three-stage serial tubular photobioreactor

Cited by 493 publications

References 23 publications

CO2 uptake by a soil microcosm

CO2 uptake by a soil microcosm

Bioprospection of freshwater microalgae from Bonito, MS, Brazil

Chlorococcum humicola (Nageli) Rabenhorst as a Renewable Source of Bioproducts and Biofuel

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