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ETHANOL PULPING AS A STAGE IN THE BIO-REFINERY OF OLIVE TREE PRUNINGS.
- Source :
-
BioResources . Aug2012, Vol. 7 Issue 3, p3142-3159. 18p. 6 Charts. - Publication Year :
- 2012
-
Abstract
- Biomaterials from olive tree pruning are an abundant agricultural residue in various Mediterranean regions. A suggested use of this residue is its separation in a main fraction (trunks and stems with diameter > 1 cm) and a residual fraction (leaves and stems with diameter 1 < cm), using biorefinery procedures. The main fraction is cooked with ethanol, giving rise to a pulp, which can be used either in paper or in bioethanol production if before pulping the main fraction is subjected to a hydrothermal treatment. Pulping with 70% ethanol concentration, 185 °C for 80 min resulted in a pulp with a yield of 46.30% and a content of holocellulose, α-cellulose, and lignin of 77.17%, 62.49%, and 21.73%, respectively. The paper sheets obtained had a breaking length of 1168 m, a burst index of 0.44 kN /g, a tear index of 2.25 mN.m²/g, and a brightness of 43.66%. The pulp converted into bioethanol (by simultaneous hydrolysis and fermentation) achieved a conversion of 70 g bioethanol/100 g potential bioethanol. The residual fraction of olive tree prunings was subjected to combustion to produce thermal energy. The heating value was 18700 kJ/kg, the flame temperature range was 1094 to 2013 ºC, and the dew point temperature range of the flue gases was 47 to 53 °C. [ABSTRACT FROM AUTHOR]
- Subjects :
- *BIOMATERIALS
*PULPING
*OLIVE
*ETHANOL as fuel
*HYDROLYSIS
Subjects
Details
- Language :
- English
- ISSN :
- 19302126
- Volume :
- 7
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- BioResources
- Publication Type :
- Academic Journal
- Accession number :
- 88840680
- Full Text :
- https://doi.org/10.15376/biores.7.3.3142-3159