Pajun uudet käyttömahdollisuudet VTT Aalto -yhteistyöprojekti

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1 Pajun uudet käyttömahdollisuudet VTT Aalto -yhteistyöprojekti Pajun kestävä tuotanto ja käyttö -seminaari, Jyväskylä Ulla Holopainen-Mantila Teknologian tutkimuskeskus VTT Oy

2 Background Global demand to produce biorenewable chemicals and fuels from non-food plant sources Cellulose in plant biomass can be conversed to ethanol using advanced enzyme technology. However, also other components present in large quantities (such as lignin) should be utilised efficiently Why willow (Salix sp.)? fast growth ability to grow on lands not optimal for forest or agricultural use use in purification of runoff water several species and hybrids can be grown in Finland 28/01/2015 2

3 The outcome of the project will be A concept for the complete valorisation of willow biomass bark fraction will be used for production of fibers wood fraction will be hydrolyzed for sugars lignin residue will be depolymerized for aromatics The products obtained are expected to be of higher quality than references from traditional raw materials Effective utilization of willow biomass would benefit Forest owners (more efficient use of land) Pulp produces (high quality fibers for special applications) Sugar/bioethanol producers (novel source of lignocellulosic sugar) Fuel and chemical manufacturers (sustainable source of green aromatics). 28/01/2015 3

4 Deconstruction flow Willow biomass Inner bark Delignification Fibers Debarking Sugars Fermentation Wood Pretreatments Lignin (from wood) Catalytical degradation Starting material, process intermediates and products are characterized by various analytical methods including Basic compositional analyses Advanced chemical methods (e.g. NMR, LC-MS, GC-MS, HPLC, GPC) Microscopy (stereo-, light, confocal and electron microscopy) Raman spectroscopy 28/01/2015 4

5 Controlled deconstruction of willow biomass (CODE Willow) Aalto - VTT cooperation project ( Forest meets chemistry call) Duration: Research partners Principal Scientist Tarja Tamminen (VTT Oy) Prof. Kristiina Kruus (VTT Oy) Principal Scientist Arvo Leinonen (VTT Oy) Prof. Tapani Vuorinen (Aalto, Department of Forest Products Technology) Prof. Ari Koskinen (Aalto, Department of Chemistry/Organic Chemistry) 28/01/2015 5

6 Willow material Willow material in this project has been collected near Jyväskylä under supervision of Arvo Leinonen (VTT Oy) Dark-leaved willow (Salix myrsinifolia) (mustuvapaju) Salix schwerinii (siperianpaju) Hybrid willow Karin Hybrid willow Klara 28/01/2015 6

7 Raw material (hybrid Karin ) 1 year old 2 years old shoot perimeter 1.5 cm or smaller shoot perimeter 3.1 cm 3 years old 4 years old shoot perimeter 8.3 cm shoot perimeter 5.8 cm 28/01/2015 7

8 Willow species and hybrids (2 years old) Dark-leaved willow Hybrid willow Karin Hybrid willow Klara Salix schwerinii 28/01/2015 8

9 Aging of hybrid Karin 1 year 4 years 2 years 3 years 28/01/2015 9

10 Structure of willow wood cross section xylem bark xylem P IB OB 28/01/

11 IB xylem P OB Inner bark contains fibre bundles Three-years old bark contains three rows of fibre bundles IB OB P 28/01/

12 Longitudinal view of inner bark fibres Fibre bundles imaged by confocal laser scanning microscope CODE 1 (2014) 28/01/

13 Structure of inner bark fiber bundles P IB xylem OB Images taken by scanning electron microscope 28/01/ Images: Jinze Dou, Aalto

14 Layered structure of inner bark fiber bundles Imaged by transmission electron microscope L5 L6 L7 ML L1 L2 L3 L4 L1 Images: Jinze Dou, Aalto 28/01/

15 Conclusions and continuation of the project Morphology of inner bark fibre bundles shows characteristics that are likely to influence their processing behaviour Chemical analyses of inner bark fibres as well as other fractions and process intermediates will further reveal the applicability of willow fractions for different purposes During year 2015, project will produce extensive data set that can be utilised in the development of novel, willow-based processes and products 28/01/

16 Thank you for your attention! 28/01/

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