Short sequence environment friendly bleaching of wheat straw pulp

Abstract

<smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"> In India, wheat straw is used as a potential raw material for the manufacture of writing and printing paper. In the present study, wheat straw pulp made through soda process and after oxygen delignification, was subjected to various conventional bleaching processes involving elemental chlorine and short sequence elemental chlorine free (ECF) bleaching processes. It was observed that D₅₀E_pD₅₀ sequence gives 84.8% brightness (Elrepho) and excellent strength properties of pulp and generates lower pollution load, both in terms of COD and TOCl, in comparison to the conventional bleaching processes involving elemental chlorine. </smarttagtype></smarttagtype>