Title:
Hydrothermal Treatment for Production of Value-Added Co-Products and Efficient Oil Extraction from Microalgae
Author(s):
Tantiphiphatthana, M., Peng, L., Jitrwung, R., Yoshikawa, K.
Document(s):
Paper
Poster
Abstract:
Hydrothermal liquefaction (HTL) has been emphasized due to energy saving on dewatering process and economical viability on production of value-added co-products along with bio-oil. HTL involves the presence of heat and pressure to biomass in an aqueous medium which leads to a decomposition of this biomass to the formation of various products. A role of operating conditions were investigated in regards to the composition and yield of the products. Chlorellaceae microalgae was tested under different HTL conditions to clarify suitable conditions for extracting bio-oil together with value-added co-products. Firstly, different microalgae loading rates (5-30%) were tested and found that this parameter has not much significant to product yield. Therefore, 10% microalgae loading rate was selected as a proper economical solution for conditioned schedule at 250oC and 30 min-reaction time. Next, a range of temperature (210-290oC) was applied to verify the effects of each parameter by keeping the reaction time constant at 30 min. The results showed no linkage with the increase of the reaction temperature and some reactions occurred that lead to different product yields. Moreover, some nutrients found in the solid residue can be utilized for fertilizer. Additionally, aqueous product has some valuable nutrients for algae re-cultivation.
Keywords:
alternative fuel, liquefaction, microalgae, thermochemical conversion, residues, bioproducts
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Pyrolysis and other biomass liquefaction technologies
Event:
23rd European Biomass Conference and Exhibition
Session:
3BV.3.43
Pages:
1290 - 1299
ISBN:
978-88-89407-516
Paper DOI:
10.5071/23rdEUBCE2015-3BV.3.43
Price:
FREE
