Title:
Optimization of Catalyzed Pretreatment and Fractionation of Cardoon
Author(s):
Liuzzi, F., De Bari, I., Kaouther, Z., Braccio, G.
Document(s):
Paper
Poster
Abstract:
The use of renewable sources for the production of energy and products is a pillar of the bio-based circular economy. The present paper describes the use of Cardoon (Cynara cardunculus L.) as a sustainable feedstock for the production of second generation sugars. The residual lignocellulosic fraction of the plant contains 37% C6 and 16% C5. The exploitation of the plant carbohydrates for the production of chemicals represents one of the main targets of the research activities of the Italian projects REBIOCHEM (cluster SPRING). As part of this research program, the present work describes the acid and base-catalyzed steam explosion pretreatments of the lignocellulosic residue of cardoon. The influence of temperature, catalysts concentration, and treatment time was studied using the response surface methodology. The results indicated that the addition of different catalysts determined different extents of biomass fractionation which can be suitable for different biorefining schemes. Optimized experimental setups were achieved for each catalyst tested by using the full factorial design (ANOVA). Results showed that sulphuric acid catalysis yielded the highest cellulose enzymatic hydrolyzability (~90%) while base catalyst reduced the lignin content in the solid fibers and a significant decrease of inhibitors in the liquid fraction.
Keywords:
steam explosion pretreatment, catalysts, full factorial experimental design, Cynara Cardunculus L.-Cardoon, second generation sugars
Topic:
Biomass Conversion Technologies for Liquid and Gaseous Fuels, Chemicals and Materials
Subtopic:
Biorefineries
Event:
24th European Biomass Conference and Exhibition
Session:
3CV.2.34
Pages:
1217 - 1220
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-3CV.2.34
Price:
FREE
