Energy Paper recycling

energy consumption reduced recycling, although there debate concerning actual energy savings realized. energy information administration claims 40% reduction in energy when paper recycled versus paper made unrecycled pulp, while bureau of international recycling (bir) claims 64% reduction. calculations show recycling 1 ton of newspaper saves 4,000 kwh (14 gj) of electricity, although may high (see comments below on unrecycled pulp). enough electricity power 3-bedroom european house entire year, or enough energy heat , air-condition average north american home 6 months. recycling paper make pulp consumes more fossil fuels making new pulp via kraft process; these mills generate of energy burning waste wood (bark, roots, sawmill waste) , byproduct lignin (black liquor). pulp mills producing new mechanical pulp use large amounts of energy; rough estimate of electrical energy needed 10 gigajoules per tonne of pulp (2500 kw·h per short ton).