A5004379709- Wood Treatment and Properties
- Lignin and Wood Chemistry
- Biofuel production and bioconversion
- Botany and Plant Ecology Studies
- Catalytic Processes in Materials Science
- Forest ecology and management
- Wood and Agarwood Research
- Advanced Cellulose Research Studies
- Catalysis and Oxidation Reactions
- Bioenergy crop production and management
- Integrated Water Resources Management
- Cultural Heritage Materials Analysis
- Catalysis and Hydrodesulfurization Studies
- Inorganic and Organometallic Chemistry
- Agriculture, Plant Science, Crop Management
- Material Properties and Applications
- Natural Fiber Reinforced Composites
- Gas Sensing Nanomaterials and Sensors
- Geology and Environmental Impact Studies
- Tree Root and Stability Studies
- Engine and Fuel Emissions
- Technical Engine Diagnostics and Monitoring
- Ammonia Synthesis and Nitrogen Reduction
- Thermochemical Biomass Conversion Processes
- Forest Ecology and Biodiversity Studies
Warsaw University of Life Sciences
2013-2024
Technical University of Zvolen
2023
Warsaw University of Technology
1996-2023
Łukasiewicz Research Network - Wood Technology Institute
2023
International Union for Conservation of Nature (Bangladesh)
2012
Nicolaus Copernicus University
2000-2006
RWTH Aachen University
2005
Purdue University West Lafayette
2005
Institut National de la Recherche Agronomique
1991
Munich University of Applied Sciences
1932
J. Zawadzki, Discuss. Faraday Soc., 1950, 8, 140 DOI: 10.1039/DF9500800140
Changes in the mineral composition of uterine fluid during shell formation and rates color appearance porphyrin deposition on were measured two subpopulations brown egg-laying hens with familial histories low or high incidences whitening. Increases weight breaking strength correlated with, proportional to, time spent by egg uterus similar both subpopulations. Shell reflectance decreased amount deposited increased linearly 20 to 24 h after oviposition preceding egg. Porphyrin was slightly...
J. Zawadzki and S. Bretsznajder, Trans. Faraday Soc., 1938, 34, 951 DOI: 10.1039/TF9383400951
Abstract Die Gleichgewichtsdrucke der Reaktion equation image wurden bestimmt, wobei sowohl die Zersetzung des CaSO 4 , wie Einwirkung von SO 3 auf CaO studiert wurde.
Abstract In this paper, the influence of physicochemical pretreatment methods on chemical composition, enzymatic hydrolysis efficiency and porosity fast-growing Populus trichocarpa wood was compared. Among methods, liquid hot water (LHW) steam explosion (SE) were used, which performed at three different temperatures (160 °C, 175 °C 190 °C) two residence times (15 min 1 h). The analysis done for native solid fraction obtained after LHW SE pretreatments. by inverse size exclusion...
Black poplar (Populus nigra L.) was thermally modified in nitrogen atmosphere. The effects of the modification process on wood were evaluated for temperatures: 160 °C, 190 and 220 °C applied 2 h; 6 h. percentual impact temperature time properties analysed. study permitted identification correlations between chemical composition selected physical wood. dimensional stability improved after thermal nitrogen. higher modification, lower equilibrium moisture content (EMC) black poplar. At EMC two...
Thermal modification of wood in nitrogen atmosphere permits its usability value to be improved. The aim the research was determine impact technological parameters at different levels on colour black poplar (Populus nigra L.). Black thermally modified a range temperatures from 160 °C 220 °C, times between 2 h and 8 h. were measured according CIE L*a*b* space model. changes a* b* had non-linear profile. maximum for achieved after temperature 200 while parameter 190 °C. Colour ΔE 170 similar,...
Enzymatic hydrolysis is crucial in processing lignocellulosic biomass into valuable products biorefineries. Due to the synergistic action of used enzymes cellulose and hemicelluloses chains are digested fermentable monosaccharides. It known that process efficiency can be improved by separation reaction end-products being cellulases' inhibitors. The work aimed investigate enzymatic corn stover poplar wood a stirred dead-end membrane bioreactor, enabling continuous end-products. Four UF...
o-Xylene, phenol and toluene were nitrated with 100% nitric acid on MoO3/SiO2, WO3/SiO2, TiO2/SiO2, TiO2–WO3/SiO2 systems. Phenol yields higher than 90%, the 10% 15% MoO3/SiO2 catalysts most active in nitration of o-xylene. The exhibited para-position selectivity nitration.
The potential of fast-growing poplar species was evaluated for bioethanol production. yields glucose and xylose from acid enzymatic hydrolysis were compared. processes performed on raw extracted wood. wood obtained by action a chloroform 96% ethanol (93:7 w/w) mixture. Additionally, to enhance the efficiency, liquid hot water (LHW) pretreatment used. turned out be good method verify biomass After biomass, high total sugars (between 626.2 808.5 mg/g or biomass), while in case very low 45.5...
Black poplar (Populus nigra L.) was subjected to thermal modification in superheated steam. The performed at 160 °C, 190 and 220 °C for 2 h. equilibrium moisture content of the black wood examined when it exposed 76% ± 2% relative humidity a temperature 20 °C. changed its moisture-exchange-related physical properties large extent. effects on individual (density, mass loss, hygroscopicity, swelling, water absorption) were diverse, intensity these increased with increasing treatment process....
Fast-growing poplar trees from plantations are the source of inexpensive wood that is intended mainly for chemical processing in pulp and paper industry. Their potential as raw material biofuel manufacturing widely discussed well. The detailed composition this therefore an important question. Five species poplars were investigated: Populus alba, P. maximowiczii, trichocarpa, nigra, tremula. Wood a consisting lignocellulose, but there also many extractives. In temperate zone climate they...
The influence of bacterial cellulose gel film pretreatment methods on the efficiency enzymatic hydrolysis was investigated. An increase in due to liquid hot water or steam explosion shown. glucose yield 88% obtained from raw, non-purified, treated at 130 °C. results confirm potential as a source for biofuel production.