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A study on growth and pyrolysis characteristics of microalgae using Thermogravimetric Analysis-Infrared Spectroscopy and synchrotron Fourier Transform Infrared Spectroscopy
- Source :
- Bioresource Technology. 229:1-10
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- This two-part study firstly investigated Tetraselmis suecica grown in different CO2 (0.04–15% v/v) concentration through indoor and outdoor cultivation systems. A high CO2 concentration led to a high lipid content, and low nitrogen and oxygen content, which are desirable for transport fuel production. Pyrolysis characteristics were investigated by TG-IR and synchrotron IR microscopy. The results show Tetraselmis suecica grown in 10% CO2 had the highest decomposition rate corresponding to more volatile products produced during the main thermal cracking stage and derived from protein-and lipid-corresponding functional groups. Moreover, a high reaction temperature and CO2 concentration resulted in a low retention of surface functional groups. The nitrogen functional groups initially decomposed at a temperature range of 250–300 °C and still remained at 550 °C, while the lipid-corresponding functional groups completely disappeared at a temperature range of 400–500 °C. Besides, the decomposition of chemical components followed the order of carbohydrate, protein and lipid.
- Subjects :
- Thermogravimetric analysis
Environmental Engineering
Light
020209 energy
Analytical chemistry
chemistry.chemical_element
Infrared spectroscopy
Bioengineering
02 engineering and technology
010501 environmental sciences
01 natural sciences
Spectroscopy, Fourier Transform Infrared
Microalgae
0202 electrical engineering, electronic engineering, information engineering
Fourier transform infrared spectroscopy
Waste Management and Disposal
0105 earth and related environmental sciences
biology
Renewable Energy, Sustainability and the Environment
Temperature
General Medicine
Carbon Dioxide
Hydrogen-Ion Concentration
Atmospheric temperature range
biology.organism_classification
Decomposition
Nitrogen
Tetraselmis suecica
chemistry
Thermogravimetry
Volatilization
Pyrolysis
Synchrotrons
Biotechnology
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 229
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....36b9237faee30a698b5fdef21cc729c0