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Abstract:Wood from the leguminous tree, Leucaena diversifolia, was subjected to hydrothermal treatment (autohydrolysis) at 160 to 180 ºC and 0 to 30 min. followed by ethanol-soda-anthraquinone delignification. The liquid phase contained 18.65 g of sugars per liter, and the solid phase had a gross heating value of 19.083 MJ/kg, but could also be uses as a source of cellulose pulp for the production of paper with tear, burst and tensile indexes of 2.4 Nm2/kg, 2.6 MPam2/kg and 40.7 KNm/kg respectively. Leucaena diversifolia lends itself readily to valorization for energy production, and also to integral, fractional exploitation by autohydrolysis and ethanol-soda-anthraquinone delignification, which can additionally bring environmental benefits to cropping zones. Reviewers' comments:Please make the following modifications to shorten the manuscript and to remove wording and typographical errors:1. Modify title: Integral valorization of Leucaena diversifolia by hydrothermal and pulp processing.The title has been changed.2. The current abstract should be condensed: Wood?? from the leguminous tree, Leucaena diversifolia, was subjected to hydrothermal treatment (autohydrolysis) at ...[what conditions?] followed by ethanol-soda-anthraquinone delignification. The liquid phase contained 18.65 g of sugars per liter, and the solid phase had a gross heating value of 19.083 MJ/kg, but could also be uses as a source of cellulose pulp for the production of paper with tear, burst and tensile indexes of .... ..., respectively. [Add concluding sentence as to the importance/utility of your study.]The abstract has been modified and summarized 3. Shorten Introduction: Leucaena diversifolia is a leguminous tree that can grow 6-20 m tall and is adapted toMediterranean conditions. The tree produces large around 70 tons/ha/year of biomass (ref?) and possesses a high re-sprouting ability. It fixes nitrogen in symbiosis with Rhizobium sp. And thus improves soil fertility and has been exploited for soil conservation and consolidation (Goel and Behl, 2002). Moreover, Leucaena produces hard and strong wood and high-quality forage. Lignocellulosic biomass such as that obtained from L. diversifolia can be converted to useful fractions through "biorefining" (Clark et al., 2011). One refining strategy involves treatments that hydrolyze some of the polysaccharides within the biomass. Hydrothermal treatment causes the total or partial dissolution of hemicellulses as the hydrolysis of acetyl groups gives rise to acetic acid which in turn catalyzes the hydrolysis of the polysaccharide (reference?) leading to the release of sugar oligomers, xylose and arabinose and other chemicals. These compounds can be used for a variety of applications in the chemical, pharmaceutical and food industries, and also as fermentation media for the production of substances such as ethanol fuel and xylitol (Rivas et al., 2002). The solid fraction from the hydrothermal process contains lignin and cellulose and can be employed as raw material for alcohol production, ruminant ...

For energetic production, differents lignocellulosic biomass sources were characterized energetically along two years in Huelva (South-west region, in Spain). Then, the differents kinds of lignocellulosic biomass were evaluated and classified for using like fuel for electric power generation in the area.The groupings of the average humidity values and average gross heating values (over dry basis) of samples analyzed were made based on the type of material and in larger groups, were estimated the average values in subgroups. In areas dominated study samples related to the cultivation of eucalyptus account for 35% of the samples. The next group of materials is made up of different waste materials derived from agricultural crops (cotton, olive, corn, grapes), to 21.1%. The next group is derived from the cultivation of pine, with 18.0%, garden waste with 13.7% and fruit crop residues with 7.0%. Table 1 presents in descending order of average gross heating value, except for some individual samples from the bottom of the table.The 6-cluster scheme allowed us to classify the different groups of materials. Thus, cluster 1 in this scheme coincided with the Cinder and Coal Characteristic Group (60% of samples). Also, the gross heating value of cluster 2 differed by only 3.8% and 2.2% from the mean gross heating value for Pine Bark and Wet Marc, respectively. The gross heating value for cluster 3 differed by only 0.6% from that for the Pine derivatives with the lowest heating values (Sawdust, Sawmill Residues, Pine Grindings and Pine Splinters), and by 0.1% and 3.4% from those for the Eucalyptus derivatives with the highest values (Eucalyptus Splinters and Grindings, respectively). Cluster 4 was associated to Eucalyptus Bark, with a difference of only 1.3% from its mean gross heating value. Finally, the other clusters encompassed the different types of residues (Agricultural, Gardening, Fruit) and waste (Sewage

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