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Lignin content is usually 70%–75%, with the remaining mass being carbohydrate, ash, and inorganic salts. Further commercial and biorefinery utilization requires the removal of sulfur, which would add cost…

The sulfite process is also used by the paper and pulp industry for producing lignosulfonates. The pulping solution employs salts of sulfurous acid, either salts of sulfites (SO32 −), or bisulfites (HSO32 −). The…

In order to use lignosulfonates (a by-product of pulp and paper processes) as an effective dispersant of coal water slurry five purified sodium lignosulfonate (SL) samples with different molecular…

The three purified Sodium lignosufonate fractions with different molecularweights were obtained using ultrafiltration. With theincrease in molecular weight, the content of phenolichydroxyl group, sulfonic acid group, and carboxyl groupdecreases,…

The content of catechol of Sodium lignosulfonate with different molecularweights is different based on the different content of hydrophilic functional groups, which would affect the reductionof SL on dyestuff…

What Is sodium lignosulfonate and Its Role in Textiles? sodium lignosulfonate (SL) is a water-soluble compound derived as a byproduct from the paper and pulp industry. In textile processing,…