A5056875385- Wood Treatment and Properties
- Lignin and Wood Chemistry
- Wood and Agarwood Research
- Forest ecology and management
- Tree Root and Stability Studies
- Natural Fiber Reinforced Composites
- Polymer composites and self-healing
- Environmental Impact and Sustainability
- Biofuel production and bioconversion
- Cultural Heritage Materials Analysis
- Advanced Cellulose Research Studies
- Plant Surface Properties and Treatments
- Postharvest Quality and Shelf Life Management
- Forest Insect Ecology and Management
- Agricultural and Food Sciences
- Plant Gene Expression Analysis
- Thermochemical Biomass Conversion Processes
- Material Properties and Processing
- Fermentation and Sensory Analysis
- Dyeing and Modifying Textile Fibers
- Forest Biomass Utilization and Management
- Horticultural and Viticultural Research
- Agriculture Sustainability and Environmental Impact
- Recycling and Waste Management Techniques
- Adsorption and biosorption for pollutant removal
Research Center for Natural Resources, Environment and Society
2018-2025
Polytechnic Institute of Viseu
2016-2025
Hospital Center of Cova da Beira
2021-2023
Düzce Üniversitesi
2018-2021
Bayburt University
2021
Atatürk University
2021
University of Lisbon
2017
A hardwood, Eucalyptus globulus Labill., and a softwood Pinus pinaster Aiton., were heat treated at temperatures between 170 210ºC in an oven autoclave.The samples pre-extracted with dichloromethane, ethanol water ground prior to Fourier Transform Infrared (FTIR) spectroscopic analysis.The treatment caused significant changes the chemical composition structure of wood, lignin polysaccharides.Hemicelluloses first degrade as proved by initial decrease 1730 cm -1 peak due breaking acetyl groups...
Abstract Eucalypt wood ( Eucalyptus globulus ) was heated in an oven for 2–24 h at 170–200°C and autoclave with superheated saturated steam 2–12 190–210°C. The chemical composition of untreated thermally treated different mass losses the range 1.1–11.9% studied by summative analysis, dichloromethane, ethanol water extracts determined gas chromatography spectometry (GC-MS). hemicelluloses degraded first, mainly regarding arabinose xylose moieties. Lignin a slower rate cellulose only slightly...
Maritime pine (Pinus pinaster) wood has low dimensional stability and durability. Heat treatment was made in an oven using hot air during 2 to 24 h at 170-200 ºC. A comparison against steam heat treatment. The equilibrium moisture content the (ASE) radial tangential directions were evaluated 35%, 65%, 85% relative humidity. MOE, bending strength wettability also determined. At same mass loss, improvements of higher for treatment, but true mechanical degradation. 50% decrease hemicellulose...
Abstract Industrialization increases the number of heavy metals released into environment. Lead (Pb 2+ ), nickel (Ni ) and chromium (Cr 6+ are among these toxic cause irreversible effects on ecosystems human health due to their bio-accumulative potential. The decontamination through adsorption processes using lignocellulosic wastes from agricultural and/or forestry is a viable solution. Hence, this work aimed at studying effect pH biosorption metal ions four different by-product materials:...
Citric acid (CA), a naturally occurring compound in fruits, mainly citrus, has gained attention for its eco-friendly potential wood modification. Through esterification, citric reacts with polymers to form bonds that improve adhesion, dimensional stability, and durability while reducing moisture absorption susceptibility decay. This study evaluated the efficacy of CA as an treatment. Wood samples were treated solutions at varying concentrations (5%, 10%, 15%) assessed mechanical properties,...
Abstract The cultivation of walnut ( Juglans regia L.) for the exploitation fruit has been increasingly recognized worldwide; therefore, it is important to valorize a large amount biomass from shells (WS), where liquefaction may play an role. This work intends contribute improved understanding best uses this material. assays were made with binary mixture ethylene glycol and glycerol (1:1 v/v) as solvents, catalyzed by sulfuric acid. tested parameters follows: particle size >0.420–0.177...
With the increased awareness of thermal insulation buildings, knowledge conductivity non-structural materials applied for roughing, cladding or flooring has become more important. The objective this study was to investigate 31 different wood species originated from region Izmir in Turkey. Thermal air dried boards determined accordance ASTM 5334 standard which measures property on interior rather than surface. varied 0.090 0.197 W/mK. highest obtained oak and lowest Canadian poplar. A linear...
The introduction of new species in forest management must be undertaken with a degree care, to help prevent the spread invasive species. However, higher profitability are needed increase products value and resilience rural populations. Paulownia tomentosa has an extremely fast growth. objective novelty this work was study potential use young trees grown Portugal by using heat treatment improve its properties, thereby allowing applications wood. average chemical composition untreated...
This study evaluates the chemical, physical, mechanical, and biological properties of untreated heat-treated Cryptomeria japonica (Thunb ex L.f.) D.Don wood from Azores, Portugal. Heat treatment was performed at 212 °C for 2 h following Thermo-D class protocol. Chemical analysis revealed an increase in ethanol soluble extractives lignin content after heat treatment, attributed to hemicellulose degradation condensation reactions. Dimensional stability improved significantly, as indicated by...
The objective of this study was to investigate the surface properties a UV-system applied on laminated parquet made with untreated and heat treated wood (ThermoWood).In study, specimens prepared from Scots pine (Pinus sylvestris) were according ThermoWood method at 190 o C for 2 hours 212 1 adhesion strength, pendulum hardness, roughness, colour glossiness determined.The in two different types manufacturer recommendations.Results show that lightness decreases red tone increases...