Reversed-Phase Chromatography of Lignin Derivatives

Forss, K.; Kokkonen, R.; Sagfors, P.-E.

doi:10.1021/bk-1989-0397.ch013

Cited by 2 publications

(1 citation statement)

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“…The liquor resulting from the sulfite process contains a high content of sugars and chemicals used during the process. The sugar content is an important property of the industrial lignosulfonates because their presence may have negative implications in some applications (Forss et al 1985). Several purification steps are necessary to obtain lignosulfonates with a higher purity and added value, including fermentation to convert the residual sugars into ethanol, membrane separation, and ultrafiltration (Lora 2008;Aro and Fatehi 2017).…”

Section: Sulfite Processmentioning

confidence: 99%

Biorefinery review: Wide-reaching products through kraft lignin

Demuner

Colodette

Demuner

et al. 2019

BioRes

103

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This review details the structure of lignin and curates information on the characteristics that this polymer must have for each specific use. Lignin is a by-product of the pulp and paper industry and the second most abundant biopolymer after cellulose. Approximately 50 million tons of lignin are produced worldwide annually, of which 98% to 99% is incinerated to produce steam, process energy. Just 1% to 2% of the lignin, derived from the sulfite pulp industry, is used in chemical conversion to produce lignosulfonates. Biorefining is a promising approach to promote the wider use of kraft lignin. However, using kraft lignin to produce high value-added products is a great challenge, due to its complex structure, low reactivity, and low solubility, which are factors that limit the lignin’s large-scale use in biorefineries. Recent studies show that kraft lignin can be used as lignosulfonates and dispersants, technical carbons, transportation fuels, bioplastics, and adhesives, but some technological hurdles must be overcome and several industrial tests must be developed to make these uses viable.

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Section: Sulfite Processmentioning

confidence: 99%