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Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris

Barajas Ferreira, Crisóstomo; Castro Padilla, Lucero; Sánchez, Ginna Vanegas; González-Delgado, Angel Darío; Barajas Solano, andres F (Contemporary Engineering SciencesBulgaria, 2017-11-14)

The increasing global demand for energy that has existed during many decades has affected the environment due to the greenhouse gas emissions, which are the result of the inadequate use of fossil fuels. This situation ...
Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology

González-Delgado, Angel Darío; Barajas Solano, andres F; ZUORRO, Antonio; Mena Lopez, Nelson Osvaldo; Ortegón Diaz, Manuel Alejandro; Garcia, Janet Bibiana; Lavecchia, Roberto (Journal of Engineering Science and TechnologyMalasia, 2019-02)

Microalgae are an attractive source of metabolites, such as lipids, proteins, pigments and carbohydrates, of potential interest to the pharmaceutical, food and energy sectors. The aim of this study was to evaluate the ...
Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition

Cuéllar García, Diego Javier; Rangel-Basto, Yeily Adriana; Barajas Solano, andres F; Muñoz-Peñalosa, Yaneth A.; Urbina-Suarez, Nestor Andres (BioTechnologiaPolonia, 2019-09-26)

Microalgae have been studied in recent years for various reasons, one among them being their potential in the production of biofuels. Biofuels are considered as a renewable source that does not compete with the food industry, ...
Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803

García-Martinez, Janet; Quintero, viviana; Contreras Ropero, Jefferson Eduardo; Barajas Solano, andres F; Barajas, Crisostomo; Lavecchia, Roberto; ZUORRO, Antonio (WaterSuiza, 2019-07-24)

This study investigates distillery wastewater, commonly known as vinasse, as a potential culture medium for the production of Chlorella vulgaris and its most relevant metabolites. The effect of vinasse concentration on the ...

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Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris
...
Barajas Ferreira, Crisóstomo | 2017-11-14

The increasing global demand for energy that has existed during many decades has affected the environment due to the greenhouse gas emissions, which are the result of the inadequate use of fossil fuels. This situation has contributed to the development of researchers regarding the microalgae production to capture the CO2 present in the atmosphere. Therefore, this paper presents the influence of the design variables (width and depth) of a flat-plate photobioreactor on the biomass productivity of Chlorella vulgaris UTEX 1803 and the evaporated volume for a period of 74 days, under the environmental conditions of Bucaramanga, Colombia. In addition, the effect of evaporated volume and temperature on biomass productivity was analyzed. It was verified that the average temperature of 29.72 °C is not an influential variable on biomass productivity. According to the results, the design of a photobioreactor with width dimensions greater than 15 cm and depth 3 cm is required to obtain a productivity of 0.35 g/L d.

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Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology
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González-Delgado, Angel Darío | 2019-02

Microalgae are an attractive source of metabolites, such as lipids, proteins, pigments and carbohydrates, of potential interest to the pharmaceutical, food and energy sectors. The aim of this study was to evaluate the effect of flocculation on lipid extraction from Chlorella Vulgaris. A 33 experimental design was performed with STATISTICA 7.0 software in order to determine the effects of flocculant (AlCl3) addition, pH and time. The best strategy of pH adjustmentflocculant addition was evaluated, followed by lipid extraction under optimal conditions. pH adjustment after the addition of flocculant provided higher flocculation efficiencies (87.2-98.9%) compared to adjustments made before adding the flocculant (67.8-85.9%). Experiments performed according to the experimental design led to a flocculation efficiency of 99.7% when 100 mg/L of AlCl3, pH 7 and a cultivation time of 18.3 days were used. The percentage of a lipid extract from the flocculated biomass was 2.7% and the flocculant did not affect the production of fatty acid methyl esters.

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Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition
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Cuéllar García, Diego Javier | 2019-09-26

Microalgae have been studied in recent years for various reasons, one among them being their potential in the production of biofuels. Biofuels are considered as a renewable source that does not compete with the food industry, and their production results in a reduced environmental footprint. The objective of the present study was to evaluate the different culture conditions that influence the productivity of the microalgae Chlorella vulgaris and Scenedesmus obliquus as a potential source for the production of biodiesel. Bold, Bristol, and modified Algal Assay Procedure (AAP) culture media were evaluated to determine which of them can provide the best conditions that favor biomass production and lipid deposition. The results indicated that S. obliquus cultivated in Bold medium exhibited a higher production of biomass after 30 days (1.730 g/l), while C. vulgaris showed a higher production in the modified AAP medium (1.880 g/l). Although the cultures grown in the AAP medium showed a more significant percentage of biomass comprising lipids than those in the other two media, between the two microalgae, the highest final lipid production was obtained by growing S. obliquus in Bold medium (0.685 g/l, 39.60% of biomass). N, P, Fe, and Mo were the elements added to the growth media, and depending on their concentration in the media, there were differences in the production of lipids. Thus, it can be concluded that S. obliquus cultivated in Bold medium has the highest potential in the production of lipids for biodiesel, but it is necessary to further optimize the cultivation of biomass to obtain a greater quantity of lipids, while interfering as little as possible in its synthesis capacity.

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Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803
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García-Martinez, Janet | 2019-07-24

This study investigates distillery wastewater, commonly known as vinasse, as a potential culture medium for the production of Chlorella vulgaris and its most relevant metabolites. The effect of vinasse concentration on the composition of the biomass (proteins, carbohydrates, and lipids) was evaluated in treatments performed in 6-L tubular air-lift reactors. The reactors were operated at 25 ◦C for 18 days, in total darkness, under a continuous flow of air. Results showed a rapid growth of microalgae in the first ten days, when an average production of 0.87 g/L was reached. Then, the daily biomass productivity began to decrease, up to an average value of 11.8 g/L at the 16th day. For all treatments, there was a significant reduction in the concentration of most metabolites in the first eight days. This was likely due to the adaptation of the biomass to the new conditions, with a transition from autotrophic to heterotrophic metabolism. From the 10th day, the concentration of metabolites in the biomass began to increase, reaching a nearly constant value at the 16th day. The observed maximum concentrations (%w/w) were: 48.95% proteins, 2.88% xylose, 7.82% glucose, 4.54% arabinose, 8.28% fructose, and 4.82% lipids. These values were only marginally affected by the type of treatment. Overall, the results obtained suggest that vinasse is a promising and sustainable medium for the growth of C. vulgaris and the production of valuable metabolites.

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Listar por tema "Chlorella vulgaris"

Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris

Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology

Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition

Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803

Envíos recientes

Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris

Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology

Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition

Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803

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Listar por tema "Chlorella vulgaris"

Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris ﻿

Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology ﻿

Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition ﻿

Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803 ﻿

Envíos recientes

Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris

Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology

Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition

Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803

Portales Institucionales

Design of a microalgae bio-reactive facade reactor for cultivation of Chlorella vulgaris

Effect of flocculation on lipid extraction from Chlorella Vulgaris UTEX 1803 using response surface methodology

Towards the production of microalgae biofuels: the effect of the culture medium on lipid deposition

Vinasse as a Sustainable Medium for the Production of Chlorella vulgaris UTEX 1803