Delignification with oxygen reduces active chlorine requirements, environmental impact and water treatment operational costs.
Oxygen delignification enhances yield in bleached pulp production and offers relevant operating cost advantages over the use of bleaching agents. Not less important is the environmental benefits it leads to, mainly the minimisation of adsorbable organic halides (AOX). Also, oxygen application leads to lower wastewater treatment oxygen requirements and less color in effluent.
Slide to learn about Nippon Gases over time