Use of Xylanases as Pre - Bleaching Agents During Paper Making

Introduction

Concern for environment friendly technologies has lead to refocus on the chemical route of paper bleaching in pulp and paper industry. The use of Chlorine as a bleaching agent is causing concern as this process produces dioxin and other chlorinated organic compounds which contributes to AOX (adsorbable organic halides) in the recipient streams. In the technology developed in our Department, an enzyme preparation from a thermophilic fungus has been shown to act as an effective pre-bleaching agent on soft and hard woods. The level of chlorine was reduced by 15% and less AOX release was demonstrated. Pilot scale runs were planned in collaboration with two paper mills.

Special Features: Environment friendly technology that reduces the chlorine level in the environment. Prospective Users: Pulp and Paper Industry

Type of Technology: Process Status of IPR Protection: Applying for patent

Glossary: Thermophilic fungus

Contact:

The Director
Foundation for Innovation and Technology Transfer
Indian Institute of Technology Delhi
Hauz Khas, New Delhi-110016
Tel : 91-011-26597167, 26857762, 26581013
Fax : 91-011-26851169
E-mail : mdfitt@gmail.com