Variations in Production and Oligomers Content Obtained Under Hydrothermal Treatment Among Five Fast-Growing Species

M.J. Díaz1, *, R. Yañez3, A. García Barneto1, J.E. Martín Alfonso1, M.J. Feria1, R. Tapias2, M. Fernández2
1 Chemical Engineering Department, Facultad de Ciencias Experimentales, Campus El Carmen, Universidad de Huelva. 21071 Huelva Spain
2 Agroforestry Science Department, Escuela Politécnica Superior, Universidad de Huelva, La Rábida, Palos de la Frontera (Huelva), Spain
3 Chemical Engineering Department, Campus Ourense, Universidad de Vigo, Ourense Spain

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© 2010 Díaz et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Chemical Engineering Department. Facultad de Ciencias Experimentales. Campus El Carmen. Universidad de Huelva 21071 Huelva Spain Tel: +34 959 21 99 90; Fax: +34 959 21 99 83; E-mail:


In order to identify fast growing species utilizable for olygomer and monomer production, five fast growing species (Paulownia fortunei, Chamaecytisus proliferus, Arundo donax, Leucaena.diversifolia and Sesbania grandiflora) were tested. Concurrently, the biomass productivity of these species was also tested on a field scale. The biomass productivity of the selected species studied ranges from 0.36 to 21.30 t ha-1 (o.d.b.) under Mediterranean conditions for the year 1 sprouts. In addition, the hydrothermal treatment results show that the selected species could be employed as alternative raw material for the production of oligomers, leading to a high concentration of oligomers (9.4-23.4 g/L-1 at 190ºC).

Keywords: Paulownia fortunei, chamaecytisus proliferus, arundo donax, leucaena diversifolia, sesbania grandiflora, alternative pulp raw materials, hydrothermal treatment.