Presentation on theme: "Paper Task Force White Paper No. 10A Environmental Comparison: Manufacturing Technologies for Virgin and Recycled-Content Printing and Writing Paper Prepared."— Presentation transcript:
Paper Task Force White Paper No. 10A Environmental Comparison: Manufacturing Technologies for Virgin and Recycled-Content Printing and Writing Paper Prepared by: Trevor Treasure
What are the White Papers? Extensive research to support Paper Task Force’s (PTF) recommendations How to purchase “environmentally preferable paper”
Focus Energy consumption and carbon foot print analysis Compare different manufacturing techniques –Virgin production –Recycled Specifically COPY PAPER
Energy Consumed (MMBTU/ADT) Energy Consumed Virgin Bleached Kraft DIP Total309 Purchased69 The ~24 MMBTU not purchased by the Kraft mill is produced in a black liquor recovery boiler. This may be viewed as carbon neutral energy.
CO 2 Emissions Depends on total energy consumed and fuel mixture White Paper 10 relies on 1992 industry average fuel mixture
CO 2 Emissions On average, fossil fuel based CO 2 emissions from bleached kraft pulp mills lower than DIP Kraft mills use large quantities of wood-waste fuel CO 2 sequestration by young trees balances CO 2 emissions from wood-waste power* * 1992-1995 sequestration rate
Sludge Landfill Air Emissions DIP manufacturing produces twice as much wastewater sludge compared to kraft pulp Sludge is land filled, breaks down, and results in emissions of CO 2 and methane