Paper Industry and Effluent Treatment Plants

Cationic derivatives of Galactomannan gums show excellent hydrogen bonding effects,Especially when used as wet-end additives and as sizing agent in paper manufacturing.Thus papers can be produced with excellent tightness, so that printing inks cannot strike through.The major use of galactomanan and its cationic derivatives in paper making is the wet end of the process. The gum added to the pulp suspension just before the sheet is formed on either a Fourdrinier machine or a cylindrical machine. The pulping process, which is designed to remove lignin and thereby produce a fibrous pulp, also removes a large part of the hemicelluloses normally present in wood These hemicelluloses which are mostly mannan and xylans, could contribute greatly to the hydration property of the pulp and the strength of the paper formed from the pulp. Galactomannans and cationic guars replace or supplement the natural hemicelluloses in the paper binding