Evaluation of promising algal strains for sustainable exploitation coupled with CO2fixation
| Autor: | Adi Nath, Shailendra Kumar Singh, Shanthy Sundaram, Kritika Dixit, Akhlaqur Rahman |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Cyanobacteria
Nostoc 020209 energy Photobioreactor 02 engineering and technology 010501 environmental sciences Photosynthesis 01 natural sciences Bioreactors Species Specificity Botany Microalgae 0202 electrical engineering electronic engineering information engineering Environmental Chemistry Biomass Food science Waste Management and Disposal Environmental Restoration and Remediation Scenedesmus 0105 earth and related environmental sciences Water Science and Technology Spirulina (genus) Oscillatoria biology General Medicine Carbon Dioxide biology.organism_classification Chlorella Biodegradation Environmental Water Pollutants Chemical |
| Zdroj: | Environmental Technology. 37:613-622 |
| ISSN: | 1479-487X 0959-3330 |
| Popis: | The photosynthetic activity of three microalgae, Chlamydomonas reinhardtii, Chlorella AU1, Scenedesmus AU1, and six cyanobacteria, Spirulina platensis, Anabaena cylindrica, Oscillatoria AU1, Nostoc muscurum, Synechococcus AU1, Synechocystis sp. PCC6803, was investigated. Strains S. platensis, Scenedesmus AU1 sp. and Chlorella AU1 sp. showed the highest fluorescence quenching than other strains tested. Thus, these were selected for CO2 mitigation analysis in a designed tubular photobioreactor system at 0.06%, 6%, 12%, 18% and 24% CO2 concentrations. Spirulina showed maximum biomass productivity of 1.03 g L(-1) d(-1) with the highest CO2 fixation rate of 0.678 g [Formula: see text] L(-1) d(-1) at 6% CO2 concentration. The maximum protein content (66.63%) was also achieved in Spirulina sp. at 6% CO2 concentration. Thus, Spirulina could be utilized as a source of protein supplement coupled with CO2 fixation. Maximum carbohydrate proportion (51.71%) was noted with Scenedesmus AU1 sp. at 12% CO2. Scenedesmus AU1 sp. also accumulated the maximum lipid content (25.07%) at 6% CO2 concentration, which was further analysed for biodiesel production. The extracted Scenedesmus oil was mainly rich in short chain fatty acids (C-16 : 0, C-18:1, C-18:2, C-18:3) which is an ideal combination for efficient biodiesel. Thus, this is vital in helping to choose Scenedesmus as a biodiesel feedstock, coupled with CO2 fixation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|