Potential Production of Biofuel from Microalgae Biomass Produced in Wastewater

Schneider, Rosana de Cássia de Souza; Bjerk, Thiago Rodrigues; Gressler, Pablo Diego; Souza, Maiara Priscilla de; Corbellini, Valeriano Antônio; Lobo, Eduardo A.

doi:10.5772/52439

Cited by 12 publications

(6 citation statements)

References 80 publications

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“…[1,2,16,17] Microalgae are an option for wastewater treatment involving bioremediation promoted by open systems such as high rate algal ponds or by closed systems such as photobioreactors, combining microalgae production with wastewater treatment. [18] In this context, this study aimed to construct and operate a tubular photobioreactor for the cultivation of the microalgae Desmodesmus subspicatus (R. Chodat, E. Hegewald and A. Schmidt (Chlorophyta)) grown in effluent from the wastewater treatment plant of the University of Santa Cruz 210 P.D. Gressler et al do Sul (WTP-UNISC) in southern Brazil, as well as to evaluate both the algae's ability to remove nutrients from the wastewater and the oleaginous potential of the algae's biomass.…”

Section: Introductionmentioning

confidence: 97%

Cultivation ofDesmodesmus subspicatusin a tubular photobioreactor for bioremediation and microalgae oil production

Gressler

Bjerk

Schneider

et al. 2013

Environmental Technology

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The microalgae Desmodesmus subspicatus (Chlorophyta) was cultivated in a tubular photobioreactor using effluent from the wastewater treatment plant of the University of Santa Cruz do Sul, Brazil to demonstrate the reactor's operation. The algae's ability to remove nutrients from wastewater and the oleaginous potential of the algae's biomass were also evaluated. Total phosphorus and ammonia nitrogen were measured. The photobioreactor consisted of a system of three acrylic tubes, a reservoir, connections and a CO2 supply. The gas supply was semicontinuous with CO2 added from a cylinder. The culture's growth was estimated from cell numbers counted on a daily basis. Lipid content in the biomass was analysed using gas chromatography. A maximum cell density of 9.11 x 10(6) cellsmL-1 and a dry weight of 234.00 mg L-1 were obtained during cultivation without CO2, and these values rose to 42.48 x 10(6) cells mL-1 and 1277.44 mg L-1, respectively, when CO2 was added to the cultivation. Differences in the quality of the effluent and the presence of CO2 did not result in different lipid profiles. The presence ofpalmitic acid and oleic acid was notable. The average extracted oil content was 18% and 12% for cultivation with and without the input of CO2, respectively.

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Section: Introductionmentioning

confidence: 97%

Cultivation ofDesmodesmus subspicatusin a tubular photobioreactor for bioremediation and microalgae oil production

Gressler

Bjerk

Schneider

et al. 2013

Environmental Technology

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“…On the other hand, Silva and Bertucco (2016) describes levels in a range of 8-15%. According to Schneider et al (2012), the lipid content can range from 7 to 77%, depending on the species and growth conditions. Considering that lipids can be used in biodiesel production (Doan, Sivaloganathan, & Obbard, 2011), we applied the biomass residue to examine the hydrolytic capacity of fungal strains using FTIR.…”

Section: Analysis Of Lipids and Carbohydrates In Microalgae Biomassmentioning

confidence: 99%

Screening of fungal strains with potentiality to hydrolyze microalgal biomass by Fourier Transform Infrared Spectroscopy (FTIR)

et al. 2019

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The use of fungi is a promising alternative for harnessing biomass after lipid extraction of microalgae since this biomass may contain relevant levels of carbohydrates that can be converted into other compounds of interest, such as sugars. Fourier Transform Infrared Spectroscopy (FTIR) has proved to be an efficient and environmentally less impacting tool for the selection of microorganisms with biotechnological potential. This study aimed to apply FTIR for the selection of fungal strains with potential to hydrolyze the biomass of the microalgae Desmodesmus subspicatus and Chlorella sp after lipid extraction. Eleven fungal strains were screened for residual biomass hydrolysis and FTIR was applied followed by multivariate analysis for the selection of filamentous fungi. The highest cell density was 28.7 × 10 6 cells mL-1 for Chlorella sp. and 15.8 × 10 6 cells mL-1 for D. subspicatus and the values of total carbohydrates content were 23.1 and 16.9%, respectively. Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA) were useful tools to screen fungal strains. After multivariate analysis, it was possible to observe that the fungi strains that presented the greatest ability to use microalgal biomass were Penicillium G12 due to the glucose and xylose sugars obtained after lipid extraction from D. subspicatus (with sugar yield of 9.4 and 6.6%, respectively) and Trichoderma auricularis for Chlorella sp. (with sugar yield of 12.9 and 9.6%, respectively). FTIR was successfully applied to screen fungal strains.

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“…In this study, 5% H 2 SO 4 concentration was used for 2 h at 100°C, which yielded 15.8 g/L of sugars. However, there are other alternatives to chemical hydrolysis such as enzymatic digestion and gamma radiation to make it more sustainable (Chen et al, 2012 ; Yoon et al, 2012 ; Schneider et al, 2013 ).…”

Section: Bioethanol Productionmentioning

confidence: 99%

Scope of Algae as Third Generation Biofuels

Behera

Singh

Arora

et al. 2015

Front. Bioeng. Biotechnol.

258

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An initiative has been taken to develop different solid, liquid, and gaseous biofuels as the alternative energy resources. The current research and technology based on the third generation biofuels derived from algal biomass have been considered as the best alternative bioresource that avoids the disadvantages of first and second generation biofuels. Algal biomass has been investigated for the implementation of economic conversion processes producing different biofuels such as biodiesel, bioethanol, biogas, biohydrogen, and other valuable co-products. In the present review, the recent findings and advance developments in algal biomass for improved biofuel production have been explored. This review discusses about the importance of the algal cell contents, various strategies for product formation through various conversion technologies, and its future scope as an energy security.

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Potential Production of Biofuel from Microalgae Biomass Produced in Wastewater

Cited by 12 publications

References 80 publications

Cultivation ofDesmodesmus subspicatusin a tubular photobioreactor for bioremediation and microalgae oil production

Cultivation ofDesmodesmus subspicatusin a tubular photobioreactor for bioremediation and microalgae oil production

Screening of fungal strains with potentiality to hydrolyze microalgal biomass by Fourier Transform Infrared Spectroscopy (FTIR)

Scope of Algae as Third Generation Biofuels

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