During the 1980s and 1990s the environmental concern in the pulp and paper industry has increased
considerably and the pressure on the industry to become more environmentally friendly
has to an increasing degree come from the final customers. Earlier it was the local or federal authorities
that tried to push the industry towards reduced pollution. In line with these environmental
efforts that especially were concentrated on reduced discharge of chlorinated organic
compounds bleaching with elemental chlorine (Cl2) was phased out and it was replaced with oxygen,
chlorine dioxide and hydrogen peroxide.