Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2026
Authors
Abdullah Bugra Senol Linn Solli John Morken Wietske Annechien Stel Nazli Pelin Kocatürk SchumacherAbstract
Aquaculture sludge from recirculating aquaculture systems (RAS) represents a growing waste stream with potential for biogas recovery; however, elevated salinity can inhibit anaerobic digestion (AD). This study evaluated the biochemical methane potential (BMP) of RAS sludge under freshwater (0%), brackish (1.2%), and marine (3.3%) conditions and assessed the effectiveness of biochar and zeolite. Batch BMP assays were conducted under mesophilic conditions at an inoculum-to-substrate ratio of 2:1, with additives applied at 0.8 g/g VS. Increasing salinity significantly reduced methane yields (p < 0.05), from 533.6 ± 3.4 NmL CH4/g VS in freshwater to 478.1 ± 10.2 and 341.3 ± 0.6 NmL CH4/g VS in brackish and marine conditions, respectively. Biochar enhanced methane production by 5.9–11.3% across all salinities, while zeolite increased yields by 7.7% and 15.7% under brackish and marine conditions, respectively, but had no effect in freshwater. Methane production kinetics were well described by the modified Gompertz model (R2 = 0.983–0.999). Overall, biochar was more effective at low salinity levels, whereas zeolite mitigated salinity-induced inhibition, indicating that targeted additive application can enhance methane recovery from saline aquaculture sludge and support sustainable RAS waste management.
Abstract
No abstract has been registered
Authors
Kai Yue Pieter Vangansbeke Isla H. Myers-Smith Donald M. Waller Kris Verheyen Markus Bernhardt-Römermann Lander Baeten Ingmar R. Staude Anne D. Bjorkman Radim Hédl Christopher Andrews Elena Barni Thomas Becker Antoine Becker-Scarpitta José Luis Benito-Alonso Jonathan Bennie Imre Berki Volker Blüml Jörg Brunet James M. Bullock Hans Van Calster Michele Carbognani Markéta Chudomelová Déborah Closset-Kopp Pavel Dan Turtureanu Gergana N. Daskalova Guillaume Decocq Jan Dick Martin Diekmann Thomas Dirnböck Tomasz Durak Ove Eriksson Brigitta Erschbamer Bente Jessen Graae Thilo Heinken Martin Hermy Peter Horchler Ute Jandt Bogdan Jaroszewicz Róbert Kanka Jozef Kollár Martin Kopecký Thomas Kudernatsch Andrea Lamprecht Jonathan Lenoir Martin Macek Marek Malicki František Máliš Ottar Michelsen Fraser Mitchell Tobias Naaf Thomas A. Nagel Miles Newman Adrian C. Newton Lena Nicklas Ludovica Oddi Anna Orczewska Simone Orsenigo Adrienne Ortmann-Ajkai Jan den Ouden Harald Pauli George Peterken Petr Petřík Remigiusz Pielech Mihai Puşcaş Christophe Randin Kamila Reczyńska Christian Rixen Fride Høistad Schei Wolfgang Schmidt Jan Šebesta Alina Stachurska-Swakon Tibor Standovár Krzysztof Świerkosz Balázs Teleki Jean Paul Theurillat Tudor Mihai Ursu Thomas Vanneste Mark Vellend Philippine Vergeer Ondřej Vild Luis Villar Pascal Vittoz Manuela Winkler Sonja Wipf Fuzhong Wu Shengmin Zhang Pieter De FrenneAbstract
No abstract has been registered
Authors
James Weldon Wenche Aas Barbara Albiniak Algirdas Augustaitis Ieva Baužienė Camilla Capelli Nicholas Clarke Thomas Cummins Heleen de Wit Thomas Dirnböck Ika Djukic Karin Eklöf Martin Forsius Martyn Futter Ulf Grandin Sergei Gromov Adéla Holubová Šmejkalová Ricardo Ibañez Iveta Indriksone Sara Jutterström Johannes Kobler Heidi Koger Angelika Kölbl Andrzej Kostrzewski Anna Koukhta Pavel Krám Robert Kruszyk Esther Lasheras Kairi Lõhmus Mikołaj Majewski Ulla Makkonen Hampus Markensten Rafael Miranda Michael Mirtl Filip Moldan Giancarlo Papitto Johannes Peterseil Ainis Pivoras Thomas Plha Gisela Pröll Pernilla Rönnback Carolina Santamaría Jesús Miguel Santamaría Krzysztof Skotak David Elustondo Mercedes Valerio Sarah Venier Lieke E. Vlaar Liisa Ukonmaanaho Jussi Vuorenmaa Nicole WellbrockAbstract
Abstract The International Cooperative Programme on Integrated Monitoring of Air Pollution Effects on Ecosystems (ICP IM) presents a comprehensive long-term dataset of ongoing integrated ecosystem monitoring from European forested catchments. The dataset encompasses measurements from 46 monitoring stations across 14 European countries, with temporal coverage mostly extending from the early 1990s to 2020 (48 sites are currently active). The integrated monitoring approach applies over 20 monitoring subprogrammes to simultaneously measure physical, chemical, and biological properties across multiple ecosystem compartments including atmosphere, precipitation, throughfall, soil water, groundwater, runoff water, soil, vegetation, and biota. All measurements follow standardised protocols detailed in the ICP IM Manual, ensuring data quality and comparability across sites and time periods. The dataset supports research on ecosystem responses to air pollution, climate change impacts, and biogeochemical cycling. Data are available under a Creative Commons By Attribution (CC BY) licence, providing valuable long-term environmental monitoring data for the scientific community.
Authors
Jiajun Wu Bin Zhou Zhehao Huang Zichuan Li Jingyuan Pan Kaihao Zhang Cheng Liu Yanjun Chai Yan Li Muhammad Azeem Nicholas Clarke Shengdao ShanAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Lei Han Alexander Scharf Mohammad Derikvand Matthew Schwarzkopf Bogdan Mitkovski Dick Sandberg Andreja KutnarAbstract
Conventional wooden dowel connections in timber structures rely on tight press-fit installation, which requires high insertion forces and often loosens over time due to stress relaxation. This study investigates an alternative approach that exploits the moisture-activated set-recovery of thermo-hydro-mechanically (THM) densified hardwood dowels to enable slip-fit assembly followed by self-tightening in service. To this end, European beech and black poplar were densified radially and tangentially at different compression ratios. They were then evaluated for swelling kinetics, swelling pressure, bending performance, and moisture-activated expansion using in-situ X-ray CT in water at 20 °C and 100 °C. Results show that activation kinetics can be controlled by temperature. Expansion was rapid within minutes in hot water and slower but equivalent in magnitude at room temperature. Beech outperformed poplar, with radial densification at 35 % compression ratio producing a peak swelling pressure of 5.7 MPa and a modulus of rupture of 268 MPa after activation. Poplar generated higher free expansion but significantly lower pressure due to its lower stiffness. Radial densification was consistently more effective than tangential, enhancing both expansion magnitude and pressure generation. Capillary uptake triggered expansion along the dowel length (∼30 mm in 1 h) and produced an elliptical expansion profile. Importantly, mechanical strength was retained post-activation, which confirms structural suitability. These results demonstrate that THM-densified beech dowels can offer a robust self-tightening mechanism, combining low-force installation with durable pressure generation and stable mechanical performance. This provides a viable path toward adhesive-free, metal-free, high-tolerance timber connections.
Abstract
No abstract has been registered
Authors
Kathrin Yvonne Weber Erlend Grenager Sørmo Gerard Cornelissen Alice Budai Daniel Rasse Harald Bier Troy RobichaudAbstract
Biochar has emerged as a promising carbon dioxide removal (CDR) solution that combines long-term carbon storage with benefits for soil health, waste management, and industrial applications. This report provides a comprehensive assessment of the current state of biochar across feedstocks, production technologies, material properties, and end-use pathways, with a particular focus on its role in climate mitigation. Drawing on scientific literature and international case studies, the report evaluates the carbon sequestration potential, environmental performance, and technological maturity of biochar systems. It distinguishes between applications that deliver durable carbon removal and those that primarily contribute to emission reductions. The report further examines deployment barriers, including feedstock availability, regulatory frameworks, market development, and safety considerations, and reviews the status of biochar implementation across Mission Innovation countries. Based on these insights, it outlines key opportunities and recommendations to support the responsible scale-up of biochar as a climate solution.
Authors
Colin Sinclair Jemma Louise Wadham Laura Jaakola Sabina Strmic PalinkasAbstract
No abstract has been registered