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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

Journal Article

Journal Article

Evaluation of the effect of the dilute acid hydrolysis on sugars release from olive prunings  [2013]

García Martín, Juan F.; Sánchez, Sebastián; Cuevas, Manuel;

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Olive prunings are considered a potential lignocellulosic raw material for production of energy (fuel-ethanol, pellets...) and other value-added products as an alternative to starch-containing feedstock. From an economic point of view, it is particularly important to recover sugars from hemicellulose. The use of dilute acid can lead to rapid hydrolysis conditions, providing hydrolysates rich in d-glucose and d-xylose that do not require further treatment. The effect of the residence time, temperature and sulphuric acid concentration on the formation of d-glucose and d-xylose was estimated by response surface methodology. Batch hydrolysis was carried out at very low temperatures (70–90 °C) and H₂SO₄ concentrations from 0 to 1 N, sampling at different times from 0 to 300 min. According to statistical analysis, all of the three parameters had significant interaction effects on sugars production. Results illustrated that the highest concentrations of d-glucose and d-xylose were found at the highest levels of temperature, acid concentration and residence time assayed. In these conditions, the maximum predicted yields expressed as g of sugar per 100 g of dry matter fed were 0.13 in d-glucose (about 40% of maximum attainable) and 0.10 in d-xylose (about 60% of the potential yield).

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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2015
Volume:
51
Start Page:
382
End Page:
387
Publisher:
Elsevier Ltd
All titles:
" Evaluation of the effect of the dilute acid hydrolysis on sugars release from olive prunings "

From the journal

Renewable energy

ISSN : 0960-1481