Biochemical and Biotechnology
- 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
