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Biodegradation Pretreatment of Wood of E. grandis, E. dunnii, and E. benthamii to Work in Biorefinery Processes

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Nowadays, there is a great interest in using lignocellulosic materials as substrate for the production of biorefinery products. Eucalypti are good options to use as crops to obtain different kinds of biofuels and derivatives, since their plantations show high adaptation potential to soil and weather conditions in Uruguay.

The basic process steps involved in the obtainment of biorefinery materials are: pretreatment, hydrolysis, fermentation and products separation. As delignification is an important process to obtain biorefinery products, in this context the evaluation of the biological (BT) and hydrothermal (TT) pretreatment of different species of Eucaliptus was studied. The possibility of obtaining sugars, alcohols and organic acids was the main focus.

The results of these investigations show a good production of reducing sugars (4–5 mg/mL for both BT and TT pretreatments), acetic acid (3–8 mg/mL for BT and 3–7 mg/mL for TT) and isopropanol (18–48 mg/mL for BT and 20–30 mg/mL for TT). In conclusion, the results show similar behaviours for BT and TT pretreatments, which is a quite important result since BT is cheaper and cleaner and thus a more attractive technology.
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Keywords: BIOREFINERY; DELIGNIFICATION; PRETREATMENT

Document Type: Research Article

Publication date: 01 February 2016

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  • The Journal of Renewable Materials (JRM) publishes high quality peer reviewed original research on macromolecules and additives obtained from renewable/biobased resources. Utilizing a multidisciplinary approach, JRM introduces cutting-edge research on biobased monomers, polymers, additives (both organic and inorganic), their blends and composites. It showcases both fundamental aspects and new applications for renewable materials. The fundamental theories and topics pertain to chemistry of biobased monomers, macromoners and polymers, their structure-property relationship, processing using sustainable methods, characterization (spectroscopic, morphological, thermal, mechanical, and rheological), bio and environmental degradation, and life cycle analysis. Demonstration of use of renewable materials and composites in applications including adhesives, bio and environmentally degradable structures, biomedicine, construction, electrical & electronics, mechanical, mendable and self-healing systems, optics, packaging, recycling, shape-memory, and stimulus responsive systems will be presented.
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