Environmental Factors (Junior Cert Wood Technology): Revision Notes

Environmental Impact of Manufactured Boards

This note describes how making and using manufactured boards affects the environment. It focuses on these main areas: sustainability, energy use, waste management, durability, emissions, and environmental certifications.

Definitions

• Sustainability: How manufactured boards impact forests, raw materials, and recycling.
• Production Energy: The energy used to make these boards versus natural wood.
• Waste Management: Handling waste during board production.
• Durability and Lifespan: How moisture and pests affect how long boards last.
• Emissions and VOCs: Gases released when making boards and their effect on air.
• Environmental Certifications: Labels that show sustainable production practices.

1. Environmental Impact:
   • Manufactured boards reduce the need for tropical trees, helping to prevent deforestation and protect biodiversity.
   • Made from wood chips and fibres, they lower the demand for solid wood and address issues with single-species forestry.
2. Role of Recycled Materials:
   • Using recycled wood fibres helps save trees, conserve resources, and decrease waste.

• Energy Comparison:
  • Making manufactured boards uses less energy than processing natural wood as they require smaller pieces or fibres.
  • Often, energy needs are 30-50% lower than for solid wood.

• Waste Reduction:
  • Wood chips and sawdust, often leftovers, help reduce waste.
  • Techniques like pyrolysis convert waste into biochar, showing new ways to use waste.
  • These methods decrease landfill waste by reusing materials.

1. Environmental Factors:

   • Moisture and pests affect durability by causing swelling, warping, or damage.

2. Protection Methods:

   • Coatings like UV-resistant layers protect boards, making them last longer.

• Emission Types:

  • Includes formaldehyde and VOCs like benzene, which may cause health issues such as breathing problems.

• Air Quality Impact:

  • Emissions affect air quality, requiring rules and equipment like standards and philtres.

• Certification Types:
  • FSC and PEFC ensure sustainable forest and manufacturing practices.
  • These labels confirm that the production is environmentally friendly.

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