Thermal degradation of Scenedesmus obliquus for biofuel production
- PDF / 1,507,615 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 34 Downloads / 215 Views
ORIGINAL ARTICLE
Thermal degradation of Scenedesmus obliquus for biofuel production Swagat Chutia 1,2 & Minakshi Gohain 1 & Manash J. Borah 1 & Nayan M. Kakoty 2 & Dhanapati Deka 1 Received: 30 May 2020 / Revised: 14 August 2020 / Accepted: 26 August 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Scenedesmus obliquus is a locally available microalgae in the north-eastern region of India. Pyrolysis of Scenedesmus obliquus has been performed in a fixed-bed vertical reactor, at 350 to 550 °C temperature range with 40 °C/min heating rate. The physicochemical properties of the solid and liquid yields were investigated. The influence of temperature on the amount of product yields was analysed. The highest bio-oil yield of 20.42% and bio-char yield of 58.63% were achieved at 500 °C and 350 °C, respectively. 1H NMR and FTIR were performed for the bio-oil characterisation. The higher heating value of the bio-oil was found to be highest 32.97 MJ/kg at 550 °C. SEM-EDX, FTIR, and XRD techniques were used for the bio-char analysis and characterisation. The resulted char was found to be porous, amorphous, heterogeneous, and basic in nature. The present work suggests Scenedesmus obliquus as a potential candidate for the production of energy substituting conventional fuel sources. Keywords Pyrolysis . Scenedesmus obliquus . Bio-char . Bio-oil
1 Introduction Utilisation of coal- and petroleum-derived fuels is now losing its importance and is now widely considered to be unsustainable [1]. Overdependence on fossil fuels has shown a series of problems like greenhouse gas emissions, environmental problems, and depletion of resources [2]. In order to overcome these problems, alternative greener fuel type with low carbon emission is desirable. Biofuels have recently attracted interest as a potential alternative to traditional transportation fuels [3]. Bio-oil is a potential candidate to substitute the traditional fossil fuel–based petroleum products due to its renewable, biodegradable, and lower carbon footprint nature [4–6]. These beneficial characteristics confirm the candidature of bio-oil as a substitute. Bio-oil can be gasified or converted into manufacturing gas, biodiesel, and biomethane [5]. Biodiesel produced from bio-oil could be used in petrol engines substituting the fossil fuel–based petroleum products
* Swagat Chutia [email protected] 1
Biomass Conversion Laboratory, Tezpur University, Tezpur, India
2
Embedded Systems and Robotics Laboratory, Tezpur University, Tezpur, India
[6]. Moreover, bio-oil is derived from biomass and the feedstock is easily available, low cost, and can be replenished by itself over time [7]. In particular to India, biomass feedstock required for biofuel production is available at Indian Rupees ( ) 6–7 per kilogramme which results in pricing the biofuel at 28 per litre. This ensures that the cost of biofuel will be cheaper than the present day’s petroleum fuel by at least 65– 70% [8]. However, the industrial challenges for commercial production need to be ove
Data Loading...
