DBPapers
DOI: 10.5593/SGEM2014/B61/S25.074

THE IRRADIATION OF ENERGETIC WILLOW CUTTINGS BY LASER LIGHT. CHEMICAL, TECHNICAL AND CALORIMETRIC ANALYSIS OF BIOMASS.

M. Jakubiak
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-20-9 / ISSN 1314-2704, June 19-25, 2014, Book 6, Vol. 1, 543-550 pp

ABSTRACT
The article presents issues related to the growth stimulation of some plant species, using a low power laser light. This technology could be helpful in increasing the yield and germination energy as well as accelerating development and growth of plants. The presented experiment was part of a wider research on the effects of laser light on the different varieties of energetic willow (Salix sp.). The aim of this particular experiment was to ascertain whether the selected laser stimulation parameters of willow cuttings could enhance and accelerate the production of biomass without changing wood properties relevant to the energetic use. The Salix viminalis Turbo cuttings were used as biological material. Two devices were used as the sources of coherent light: laser - wave length: λ = 670 nm and laser diode - wave length: λ = 473 nm. Willows had been cultivated for two years. The willow shoots were collected after the second growing season. Wood samples of control and experimental groups were dried and the calorimetric analysis have been made. Additionally, the analysis of technical parameters as well as carbon, hydrogen and sulfur content of the harvested wood were carried out. The results clearly indicate that stimulation by low power lasers with parameters of irradiation properly chosen for the Salix viminalis Turbo can significantly speed up growth of plants without changing the chemical and technical characteristics and the calorific value of biomass.

Keywords: willow biomass, laser stimulation, irradiation, energetic willow, calorific
value