At the Wood Valorization HUB, we believe in the importance of collaboration and knowledge sharing. Our events and conferences are designed to foster connections, inspire innovation, and keep our community engaged. We are excited to lead the way in sustainable material development and are eager to share our latest news, insights, and research breakthroughs. 

Explore our projects, publications, and media to learn more about our work and discover how we are shaping the future of wood valorization. Join us in making a lasting impact through shared knowledge and groundbreaking research.

Upcoming events

Time: 01.10.2025 18:00 - 03.10.2025 18:00
Location: Tallinn, Estonia
Languages: English

We are pleased to invite you to the 23rd Baltic Polymer Symposium (BPS 2025), which will take place in Tallinn, Estonia, on October 1–3, 2025. This year, the symposium is organized by the TalTech Wood Valorisation HUB, bringing a unique emphasis on the role of polymer science in sustainable material development.

Past events

Time: 19.11.2024 12:00 - 19.11.2024 17:00
Location: Mektory maja, Raja 15, Tallinn
Languages: Eesti keel
Target group: Koostööpartnerid, ettevõted

Puidu Väärindamise Fookustippkeskuse (FTK) tutvustav üritus partneritele toimus 19. novembril 2024 TalTechi Mektory majas. Puit on Eestile väärtuslik ja strateegiline ressurss, mille väärindamine aitab kaasa nii majanduse kui ka keskkonna jätkusuutlikule arengule. Puidu väärindamine on oluline nii ettevõtjatele, teadusasutustele kui ka avalikule sektorile, sest see võimaldab luua innovaatilisi lahendusi, suurendada konkurentsivõimet ja toetada rohepöörde eesmärke. […]

Media

07.02.2025

Wood Valorisation HUB extends heartfelt congratulations to Peetri-Jaan Lahtvee, a biotechnology researcher and tenured associate professor at Tallinn University of Technology, on being awarded the White Star IV Class Medal by the President of Estonia. Peetri-Jaan Lahtvee himself expressed both surprise and gratitude upon receiving this prestigious recognition. “I don’t even know how to react […]

02.01.2025

Our program is currently being developed and will be updated regularly as new information becomes available. We aim to provide an engaging schedule featuring inspiring keynote speakers, insightful presentations, and dynamic discussions on the latest advancements in polymer science and wood valorisation.

Ongoing

Bio-based sustainable and fire-resistant composite materials developed from secondary raw materials
Time: 01.2024 - 12.2028

Description: 
This research topic focuses on the solutions of important development issues of novel environmentally friendly building materials from these bio-residues, with a focus on increasing fire resistance, which is necessary for the building materials applications. In order to cope with these challenges, this project will develop innovative materials for building panels based on biowaste and mycelium.

Chemical and biological valorization technologies for woody biomass and secondary lignocellulose sources
Time: 01.2024 - 12.2028

Description: 
In our project, we are developing enzyme technologies utilizing extremophilic microbe-derived enzymes to break down and modify lignin, remove toxic phenolic compounds, convert cellulose into wood sugars, and advance enzyme-catalyzed cellulose technologies. Additionally, the project focuses on advancing technologies for converting kraft, hydrolysis (and organosolv) and synthetic lignins into porous materials, thermoplastics, and cutting-edge catalysts.

Development of methods for the valorization of underutilized wood and wood material in construction
Time: 01.2024 - 12.2028

Description:
The goal of the thematic research and development project is to create competence in Estonia for the sustainable use of hitherto less-used wood and wood materials in building constructions. In the framework of the project, engineering parameters are presented for less-used wood, and sustainable production and construction technologies are developed. New uses for production residues are also developed. The principles of the circular economy are followed in the development of design and technology methods. Detachable joints enabling recycling wood are being developed. Integrated design solutions and numerical simulation models are developed, and optimized structural solutions are developed.
The thematic research and development project is implemented as an interdisciplinary collaboration, developing new technologies and design principles and combining competencies to create a solid scientific base for innovative, sustainable wood engineering.

Development of Wood-bio-adhesive Systems in Sustainable and Safe Engineered Wood Products in Construction
Time: 01.2024 - 12.2028

Description: 
Design and assessment methods are improved, and their scope widened to new innovative wood products based on experimental studies and thermo-mechanical simulations. This will accelerate the implementation of bio-based adhesives, improving the competitiveness and safety of the engineered wood products and promoting the utilization of low-quality wood species.

DigiBio – Centre for Digitalisation of Biology Towards the Next-Generation of Biosusatainable Products
Time: 09.2023 - 08.2029

Description: 
Establishing Estonian automated state-of-the-art synthetic biology platform.

Media: Research in Estonia

Development

Applied research – Cannabidiol extraction and isolation from industrial hemp biomass
Time: 10.2021 - 09.2023

Goal(s): 
Studies on semi-industrial scale extraction of hemp,
optimisation of conditions. Distillation of extracts, CBD crystallization. CBD fractionation by flash-chromatography.
Result(s): 
The technology has been developed for extracting cannabidiol from hemp.

Media: Arigeenius (in Estonian)

Applied research for the use of reed biocomposite materials in biodegradable tableware
Time: 04.2019 - 03.2022

Goal(s): 
This research is aiming to reduce the harm of plastic waste to nature by replacing the disposable plastics tableware material with modified reed materials and with reed reinforced biopolymer composites. This applied research is potentially aimed for tableware producer companies, who are seeking new materials for their production processes and who are looking for new environmentally friendly materials for replacing synthetic plastics as raw materials.
Result(s): 
Various possibilities for the use of reed in biocomposites were identified. During the work, suitable mixtures of reed biocomposite materials suitable for the production of biofood dishes were developed.

Bioconnect – Developing the Action Plan to Foster Baltic Region Innovation Ecosystem in Biotechnology and Synthetic Biology
Time: 11.2023 - 10.2024

Goal(s): 
The BIOCONNECT project aims to help create a more robust, integrated, and inclusive Baltic ecosystem/cluster for biotechnology innovation as one of the key ingredients for the present and future economic competitiveness of the region.
Result(s): 
Baltic biotech action plan will be published and a memorandum signed collectively by all Baltic states.

Media: Latvian Institute of Organic Synthesis; ECHAlliance

Efficient connections for modular prefabricated timber buildings to help reconstruction in Ukraine
Time: 01.2023 - 12.2024

Goal(s):
The project aims to strengthen the research in the field of timber engineering in Ukraine, to help reconstruction and to support the transition of the construction sector towards circularity and sustainability.  More specifically the project aims at increased sustainability of the built environment by timber buildings through a more efficient, long-lasting and reusable application of structural timber and engineered wood products. The project will reduce the complexity of high-performance connections for timber buildings and lower the entrance barrier towards the use of timber in structures.
Result(s):
New remountable joints for timber structures with their technical properties for ambient and fire situation.

Investigation of Estonian timber bridges within the Nordic-Baltic bridge research programm
Time: 09.2014 - 02.2015

Goal(s): 
The aim of the research project was the investigation of timber bridges in Estonia.
Result(s): 
Analysis of structural conditions of timber bridges and comparison of life cycle costs for bridges made of different materials was provide.

Research

A novel 3D-printable cell factory platform for growth-decoupled oleochemical production
Time: 02.2021 - 12.2025

Goal(s): 
We combine the technologies of 3D printing of living materials and the synthetic biology approach of non-traditional yeasts to create a novel, targeted living catalyst immobilization platform for biorefining that converts various organic wastes into more valuable oleochemicals.
Result(s): 
The basic understanding of non-conventional yeast Rhodotorula toruloides was aquired. The knowledge can be used for microbial cell factory development for oleochemical production from low-value substrates. A hydrogel-based platform that allows yeast cells to stay metabolically active while immobilized in the 3D-printed matrix was developed. Conversion of substrates to products was slightly more efficient, opening possibilities for further studies.

Biodegradable formulations for antiviral coatings and sanitizers [BIOFORM]
Time: 10.2020 - 12.2021

Goal(s):
The goal of BIOFORM project was to introduce new targeted chemical modifications to biobased formulations and help to  commercialize low-toxic biodegradable formulations.
Result(s):
The new products proposed: (1) POM / PLA composites made by the melt extrusion process and well suited as a coating material for the hospital environment; (2) nanoemulsions of essential oils that characterized by controlled loading; (3) lignin-based materials as gels with potential antiviral and antibacterial properties.

Media: Facebook

Biotechnological processing of wood and food waste into feed and food supplements
Time: 06.2022 - 06.2024

Goal(s): 
Demonstrated the efficiency of a novel biotechnological process on a pilot scale that converts wood industry residues (pre-treated sawdust) into healthy feed and nutritional supplements. A life cycle analysis was performed on the process, quantitatively demonstrating the benefits of a circular economy process and a platform was created for the efficient development of industrial biotechnology processes on various sustainable commodities such as food waste, food industry and agricultural by-products.
Result(s): 
Non-conventional yeast Rhodotorula toruloides was able to tolerate inhibitors present in wood hydrolysates and grow on short-chain fatty acids obtained from food waste. While growing, it produced intracellular microbial oils and carotenoids. Both oils and carotenoids can be extracted and used as a feed and food supplements.

Media: Facebook

Cellulose based energy harvesting
Time: 01.2023 - 12.2023

Goal(s):
In the course of the project, the possibilities of using various materials produced by the chemical valorization of cellulose for the collection of electrical energy using the triboelectric method are investigated. In the Laboratory of Biopolymer Technology of Tallinn University of Technology, cellulose derivatives are prepared and nanofibrous non-woven materials are produced from them by electrospinning. The main physical properties of non-woven materials are determined. Project partner RISE constructs triboelectric devices from the non-woven materials and evaluates their ability to produce electricity.
Result(s):
Prototypes of triboelectric materials were produced and the suitability of electrospinning technology in this application was proven.

Chemical valorization of cellulose in environment of ionic liquids
Time: 09.2020 - 08.2023

Goal(s):
In the course of the project, a laboratory pilot line for the production of novel thermoplastic cellulose is developed and a technological solution for the production and processing of the materials is proposed.
Result(s):
The result of the work offers new consumer plastics in the synergy of cellulose chemistry and plastics technology.

Media: Research in Estonia

Wood Mechanical Valorisation

Early experimental investigations on slotted-in steel plate connections with self perforating dowels in CLT
Authors: Tuhkanen E, Ojamaa M
Issue: Wood Material Science and Engineering 16 (2), 102−109
Year: 2021
Effect of lignin on veneer densification and set-recovery
Authors: Kilumets C, Kallakas H, Ralph S, Zhu J.Y, Hunt CG, Rohumaa A, Kers J
Issue: Construction and Building Materials 451, 138795
Year: 2024
Effect of protein surface hydrophobicity and surface amines on soy adhesive strength
Authors: Kallakas H, Plaza N, Crooks C, Turner D, Gargulak M, Arvanitis MA, Frihart CR, Hunt CG
Issue: Polymers 16(2):202
Year: 2024
Enhancing the bending strength, load-carrying capacity and material efficiency of aspen and black alder plywood through thermo-mechanical densification of face veneers
Authors: Akkurt T, Rohumaa A, Kallakas H, Scharf A, Kers J
Issue: Construction and Building Materials 450, 138555
Year: 2024
Fire design model for timber frame assemblies with rectangular and I-shaped members
Authors: Mäger K. N, Tiso M, Just A
Issue: Wood & Fire Safety pp 268–274
Year: 2020

Wood Chemical Valorisation

Chloromethylation of lignin as a route to functional material with catalytic properties in cross‐coupling and click reactions
Authors: Mohan M.K, Silenko O, Krasnou I, Volobujeva O, Kulp M, Osheka M, Lukk T, Karpichev Y.
Issue: ChemSusChem 17 (8), e202301588
Year: 2024
Development of functional composite Cu (II)-Polyoxometalate/PLA with antimicrobial properties
Authors: Duvanova E, Krasnou I, Krumme A, Mikli V, Radio S, Rozantsev G, Karpichev Y
Issue: Molecules 27(8), 2510
Year: 2022
Effect of green co‑solvents on properties and synthesis of cellulose esters in superbase ionic liquid
Authors: Savale N, Tarasova E, Krasnou I, Kudrjašova M, Rjabovs V, Reile I, Heinmaa I, Krumme A
Issue: Cellulose 31:4911–4927
Year: 2024
Ionic liquid based pretreatment of lignocellulosic biomass for enhanced bioconversion
Authors: Usmani Z, Sharma M, Gupta P, Karpichev Y, Gathergood N, Bhat R, Gupta V. K
Issue: Bioresource Technology 304, 123003
Year: 2020
Novel softwood lignin esters as advanced filler to PLA for 3D printing
Authors: Mohan M. K, Krasnou I, Lukk T, Karpichev Y
Issue: ACS Omega
Year: 2024

Wood Biochemical Valorisation

Improving xylose consumption in Rhodotorula toruloides through heterologous expression of xylose reductase and xylulokinase
Authors: Monteiro de Oliveira P, Pinheiro M.J, Sabedotti de Biaggi J, Tšitšerin A, Tammekivi E, Herodes K, Bonturi N, Lahtvee P. J
Issue: bioRxiv
Year: 2023
Microbial oil production in sugarcane bagasse hemicellulosic hydrolysate without nutrient supplementation by a Rhodosporidium toruloides adapted strain
Authors: Bonturi N, Crucellob A, Carvalho Vianab A.J, Alves Miranda E
Issue: Process Biochemistry 57:16-25
Year: 2017
Rhodotorula toruloides single cell oil production using eucalyptus urograndis hemicellulose hydrolysate as a carbon source
Authors: Lopes H.J.S, Bonturi N, Miranda E.A
Issue: Energies 13(4), 795
Year: 2020
Screening and growth characterization of non-conventional yeasts in a hemicellulosic hydrolysate
Authors: Monteiro De Oliveira P, Aborneva D, Bonturi N, Lahtvee P. J
Issue: Front. Bioeng. Biotechnol 9:659472
Year: 2021
Xylose metabolism and the effect of oxidative stress on lipid and carotenoid production in Rhodotorula toruloides: Insights for Future Biorefinery
Authors: Pinheiro M.J, Bonturi N, Belouah I, Miranda E. A, Lahtvee P. J
Issue: Front. Bioeng. Biotechnol 8:1008
Year: 2020

Wood Analytics

Characterization of organosolv lignins and their application in the preparation of aerogels
Authors: Jõul P, Ho T. T, Kallavus U, Konist A, Leiman K, Salm O.-S, Kulp M, Koel M, Lukk T
Issue: Materials 15 (8), #2861
Year: 2022
Dye-decolorizing peroxidase of Streptomyces coelicolor (ScDyPB) exists as a dynamic mixture of kinetically different oligomers
Authors: Pupart H, Vastšjonok D, Lukk T, Väljamäe P.
Issue: ACS Omega 9(3):3866-3876
Year: 2024
Preparation and characterization of lignin-derived carbon aerogels
Authors: Jõul P, Järvik O, Lees H, Kallavus U, Koel M, Lukk T
Issue: Frontiers in Chemistry 11, #1326454
Year: 2024
Substitution of the methionine axial ligand of the T1 copper for the fungal-like phenylalanine ligand (M298F) causes local structural perturbations that lead to thermal instability and reduced catalytic efficiency of the small laccase from Streptomyces coelicolor A3(2)
Authors: Zovo K, Pupart H, Van Wieren A, Gillilan R. E, Huang Q, Majumdar S, Lukk T
Issue: ACS Omega 7 (7), 6184−6194
Year: 2022