PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS

**Definition:** This place covers:

**Limiting references (this place does not cover):** - Mechanical treatment of waste paper by dry methods -> D21B1/08 - Mechanical treatment of waste paper by wet methods, by the use of steam or other means -> D21B1/32

**Glossary:** - bagasse: fibre remaining after the extraction of the sugar-bearing juice from sugarcane - bleaching: treatment of lignocellulosic material to obtain a pulp/paper having an increased brightness - cellulose: structural component of the primary cell wall of green plants. It is an organic compound with the formula (C 6 H 10 O 5 ) n and is the major constituent of paper, paper-board and of textiles made from cotton, linen and other plant fibres. - cotton linters: fine, silky fibres which adhere to the seeds of the cotton plant after ginning and are traditionally used in the manufacture of paper and as a raw material in the manufacture of cellulose - delignification: treatment of lignocellulosic material to remove a part of the lignin - lignocellulosic material: cellulosic material which also comprises lignin - linings: material that covers the inner surface of something - pulp: a dispersion (e.g. aqueous suspension) comprising cellulosic fibres and optional additives; it is prepared by chemically or mechanically separating cellulose fibres from wood, fibre crops or waste paper