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sodium lignosulfonate as dispersant of coal water slurry
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 weights were prepared by fractionation using ultrafiltration and dialysis. The effect of SL on the apparent viscosity of coal water slurry (CWS) was investigated. The adsorption…
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Molacular Weight Decide Lignosulfonate Dispensing Capability
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 purity of Sodium lignosulfonate increases, color deepens, and guaiacol group content increases. There are great differences in the performance of Sodium lignosufonate with different molecular…
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Effect of SL on Dyestuff Reduction and Dyeing Properties
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 caused by the oxidative processes ofcatechol structures to quinonoid structures. The UVabsorption spectra of different dye–dispersant systemstreated by 130C dyeing process were measured to calculatethe reduction…
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Effect of Sodium lignosulfonate on Fiber Staining
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, it serves various purposes, such as a dispersant or binding agent, due to its chemical properties. However, one significant drawback is its tendency to stain fibers,…
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Molecular Weight of Sodium lignosulfonate Related with Dye Dispersant
Although lignosulfonate has been widely used as dye dispersant, it has some disadvantages. On the one hand, thecolorless catecholic structure in lignin is easy to oxidize toquinonoid structure in lignin isolation procedures and pulping processes, which not only produces lignin so intensivelydarkened that its use in many application areas becomesobjectionable because of the color, and…
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Lignin and sulfonated lignin
Lignin is the largest reservoir of aromatic compounds on earth and has great potential to be used in many industrial applications. Alternative methods to produce lignosulfonates from spent sulfite pulping liquors and kraft lignin from black liquor of kraft pulping process are critically reviewed herein. Furthermore, options to increase the sulfonate contents of lignin‐based products…
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Lignosulfonate absorption as Animal feed additive
Lignosulfonate used in Cattle Feed Eighteen Hereford steers, individually housed, were fed diets containing 0,80000 and 120 000 mg/kg of an ammoniated spent sulphite liquor （50% DM）, containing 57% lignosulphonates on DM basis，（corresponding to 0,22800 and 34 200 mg lignosulphonate/kg feed) for 112 days (Chang et al., 1977). The diet consisted of cracked maize and…
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Lignosulfonate as animal feed additives absorption
Lignosulphonate absorption In its recent assessment of calcium lignosulphonate, the EFSA ANS Panel (2010) concluded that: “The in vitro studies indicate that the low transepithelial transport measured in Caco2 cell layers could be explained by the high molecular weight of calcium lignosulphonate. Furthermore, the in vivo studies demonstrated that calcium lignosulphonate is poorly absorbed from…
