Its decay baptize abuse comes mainly from the affable liquid decay generated in the actinic pulping process,commonly accepted as "black liquor." To aftermath 1t lurid black liquor to be absolved about 10t. Atramentous liquor is a basic of a circuitous system, of which 70% was amoebic solids, including sodium lignosulphonate, polysaccharides,humic acerbic and artificial abasement products; 30% of inorganic solids, including sodium chargeless a silicon-containing admixture and a salt, wherein the lignin, polysaccharides, humic acerbic and added substances are alive substances [2]. Lignin is a above component of atramentous liquor, which is based on accustomed polymer derivatives of benzene propane structural units connected calm via C-O band and C-C chain, with supramolecular backdrop and top apparent area,contain a ample amount of sodium lignosulphonate anatomic groups, such as phenolic hydroxyl group, a methoxy group, a benzyl hydroxyl group, a carbonyl group.
A carboxyl group, a vinyl accumulation [3], hydroxymethyl easy, sulfonation, carboxylation, alkylation reactions of various actinic [4]. Nature of the use of lignin
phenolic hydroxyl group, a little acidification, sodium lignosulphonate, absolute a circuitous admixture can be fabricated from lignin sulfonate, can be candy or acclimated directly as a little beneath ambitious abstention CWS additives [5 ]. Sodium lignin sulphonate is an anionic surfactant. This abstraction is based on atramentous liquor resource to abstraction the furnishings of assorted factors on the pulp atramentous liquor lignin sulfonated.
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