Biorefinery options to valorize the spent liquor from sulfite pulping

Rueda, Cristina; Calvo, P.A.; Moncalián, Gabriel; Ruiz, G.; Coz, Alberto

doi:10.1002/jctb.4536

Cited by 49 publications

(40 citation statements)

References 56 publications

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“…[66][67][68][69][70] They are the most flexible candidates for biorefinery design and are therefore critical for maximizing the profitability of the lignosulfonate value chain. 71 Many methods have been developed to extract lignosulfonate from SSL. 72 A recent method featuring selective adsorption of lignosulfonate with XAD-7 exemplified Concentration and fractionation are basic needs to manipulate SSL.…”

Section: Membrane Technology In Biorefinery Based On Sulfite Processmentioning

confidence: 99%

The current and emerging sources of technical lignins and their applications

Rao

2018

Biofuels Bioprod Bioref

161

142

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Technical lignins are bulk feedstocks. They are generated as byproducts from pulping or cellulosic ethanol production. Since lignin undergoes significant structural changes in the chemical and physical treatments, all technical lignins are unique in terms of chemical structure, molecular weight, polydispersity, and impurity profile. Kraft lignin is potentially the largest source of technical lignin as new isolation technologies have been implemented on industrial scale in recent years. Lignosulfonate has been an integral product in sulfite pulping biorefinery. It has a well-established market in construction industry. Organosolv-like lignin production is increasing as cellulosic ethanol has been promoted as the substitute of fossil fuel. It may have unique applications because it has low molecule weight and is free from sulfur. Technical lignin application is expected to expand as the characteristics are improved with fractionation or chemical modification. The application of technical lignin has been focusing on developing products equivalent to those made by petroleum chemicals. The recent development in technical lignin supply should increase its market share as additives in polyurethanes and as the substitute of phenol-formaldehyde adhesives. Quality improvement of technical lignin may also encourage the study of lignin as an alternative feedstock for carbon fiber. In addition, technical lignin depolymerization has been extensively explored to provide renewable aromatic chemicals. Starting from controlled pyrolysis and thermal liquefaction as the baseline technologies, many different chemical depolymerization have been invented with a wide range of underlying chemical principles.

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Section: Membrane Technology In Biorefinery Based On Sulfite Processmentioning

confidence: 99%

The current and emerging sources of technical lignins and their applications

Rao

2018

Biofuels Bioprod Bioref

161

142

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“…2014;Rueda et al 2015;Zhu et al 2015;Rueda et al 2016). Production of ethanol from sugars from sulfite liquors in the US was reported at 11,000 gallons per day in 1987 (Zerbe 1991).…”

Section: Biorefineries In the Pulp And Paper Industrymentioning

confidence: 99%

Integrating a Biorefinery into an Operating Kraft Mill

Johnson¹,

Hart²

2016

BioResources

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Kraft pulp and paper mills have several advantages for serving the emerging biorefinery industry as a source of raw materials. This review examines technologies for producing liquid biofuels, chemicals, and advanced materials from woody feedstocks to generate new sources of revenue. Market pull comes in part from government policies that drive substitution of petroleum-based products with biobased equivalents. Kraft mills have ample networks to supply feedstocks, whether these are forest residues or byproduct side streams. Pulp mills are well suited to expand sufficiently to accommodate production of value added platform chemicals that are in demand because of brand owner sustainability commitments.

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“…The impregnation value in each trial is obtained taking into account the difference of liquor volume among the input and the output, and using an average value of liquor density of 1054 kg/m 3 obtained in a previous work (Rueda et al, 2015). Therefore, the final impregnation value is given in mg/g dried matter (DM).…”

Section: Impregnation Stepmentioning

confidence: 99%

“…In recent years, half of the world's round wood harvest is used for industrial purposes (Willför et al, 2011). In addition, valorization options in pulping have been studied during the last decades because of the sugar and lignin content of wood, converting the pulp mills into the biorefinery concept (Rueda et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Wood is formed mainly by cellulose, hemicellulose, lignin and small percentages of extractives and ash. In an acid sulfite process, the process in which this work is focused, the fraction of cellulose is oriented to obtain dissolving pulp; however, the rest of the components, lignin and hemicellulose, are byproducts that can be valorized into new high value-added products such as ethanol or xylitol from fermentable sugar (from the hemicellulose) and lignosulfonates (from the lignin) (Rueda et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Input Variables over the Wood Digestion in a Sulfite Pulp Mill for Biorefinery Purposes

Rueda¹,

Tejedor²,

Quijorna³

et al. 2015

JBLS

Self Cite

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Eucalyptus globulus is the most profitable specie in Europe for pulping. However, in recent years some diseases and pests have caused its defoliation, affecting the available quantity of wood. In this sense, the mills are studying how to avoid the loss of pulp yield as well as the optimization of byproducts in order to take advantage of every component present in the wood using biorefinery processes. One of the possible options is to complete the consumption of E. globulus with other species such as Eucalyptus nitens.The objective of this paper is to study the behavior of both species related to the dissolving pulp manufacturing process as well as the characteristics of the resulting products. Parameters that can be very useful for the evaluation of the raw material, such as the growing data or density of both species, have been compared. Major attention has been focused on the composition of both species and how it affects the characteristics of the possible final products.E. nitens presents good results of forestry characteristics, being better than E. globulus in terms of growing and resistance to frosts. The cellulose content of both species is similar, however the digestion process in the case of E. nitens needs to be improved in order to optimize the involved energy and the obtained products.

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Biorefinery options to valorize the spent liquor from sulfite pulping

Cited by 49 publications

References 56 publications

The current and emerging sources of technical lignins and their applications

The current and emerging sources of technical lignins and their applications

Integrating a Biorefinery into an Operating Kraft Mill

Influence of Input Variables over the Wood Digestion in a Sulfite Pulp Mill for Biorefinery Purposes

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