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Related Concept Videos

Wood Products01:21

Wood Products

83
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
83
Softwoods and Hardwoods01:28

Softwoods and Hardwoods

166
Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
166
Lumber01:19

Lumber

116
Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
116
Introduction to Wood01:19

Introduction to Wood

236
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
236
Wood Panel Products01:18

Wood Panel Products

73
Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
73
Wood Surfacing01:14

Wood Surfacing

94
Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
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Updated: Jul 7, 2025

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization
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Substituting Solid Fossil Fuels with Torrefied Timber Products.

Jan Malaťák1, Martin Jankovský2, Jitka Malaťáková3

  • 1Department of Technological Equipment of Buildings, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 16500 Prague, Czech Republic.

Materials (Basel, Switzerland)
|December 23, 2023
PubMed
Summary
This summary is machine-generated.

Low-temperature pyrolysis of spruce biomass yields high-grade biochar, a renewable fuel. Biochar produced at 350 °C offers superior energy value compared to brown coal, making torrefaction technology economically viable.

Keywords:
biochareconomic analysisrenewable fuelssprucetorrefaction

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Area of Science:

  • Renewable Energy Sources
  • Biomass Conversion Technologies
  • Thermochemical Processing

Background:

  • Growing demand for sustainable alternatives to fossil fuels for heat and power.
  • Biomass and its thermally treated derivatives as potential renewable resources.
  • Need for efficient and economically viable biomass upgrading technologies.

Purpose of the Study:

  • To verify the mass and energy balance of spruce woody biomass during low-temperature pyrolysis.
  • To evaluate the quality of biochar produced as a potential substitute for fossil fuels.
  • To conduct an economic analysis of biochar production via torrefaction technology.

Main Methods:

  • Low-temperature pyrolysis of spruce woody biomass within a temperature range of 250–550 °C.
  • Verification of mass and energy balance during the pyrolysis process.
  • Net calorific value determination of the produced biochar.
  • Economic analysis based on Czech Republic's current economic conditions.

Main Results:

  • Low-temperature pyrolysis successfully produced high-grade biochar from spruce biomass.
  • Biochar processed at 350 °C demonstrated a significantly higher net calorific value than brown coal.
  • Economic analysis indicated that investing in torrefaction technology is beneficial, even with potential biochar price increases.

Conclusions:

  • Low-temperature pyrolysis is an effective method for producing high-quality biochar from biomass.
  • Biochar produced at optimal conditions can serve as a viable and superior alternative to fossil fuels like brown coal.
  • Torrefaction technology presents an economically advantageous investment for renewable energy production.