Nanofiltration of monosaccharide containing solution to recover xylose

Sjöman, Elina; Mänttäri, Mika; Nyström, Marianne; Koivikko, Hannu; Heikkilä, Heikki

doi:10.1016/j.desal.2006.03.082

Cited by 3 publications

(2 citation statements)

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“…Membrane-assisted processing of lignocellulosic hydrolysates has gained importance in fractionation of hemicelluloses in particular from aqueous extracts (Moure et al 2006;Vegas et al 2006;Nabarlatz et al 2007;Sjöman et al 2006Sjöman et al , 2007Al Manarash et al 2012a,b;Sainio et al 2013;Ajao et al 2014;Kallioinen et al 2014). In the pulp and paper industry, membrane technology has already been implemented for recycling chemicals, for cleaning process effluents, and for removing impurities from water circulation systems (Mänttäri et al 1997(Mänttäri et al , 2002Koivula et al 2011Koivula et al , 2012Koivula et al , 2013Krawczyk et al 2013).…”

Section: Fractionation Of Pretreatment Effluentsmentioning

confidence: 99%

Chemical Pretreatments of Wood Chips Prior to Alkaline Pulping - A Review of Pretreatment Alternatives, Chemical Aspects of the Resulting Liquors, and Pulping Outcomes

Lehto

Alén

2015

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The chemical industry is being forced to evaluate new strategies for more effective utilization of renewable feedstocks to diminish the use of fossil resources. In this literature review, the integration of both acidic and alkaline pretreatment phases of hardwood and softwood chips with chemical pulping is discussed. Depending on the pretreatment conditions, high-volume sulfur-free fractions with varying chemical compositions can be produced. In case of acidic pretreatments, the major products include carbohydrates (mono-, oligo-, and polysaccharides), whereas under alkaline (i.e., aqueous NaOH) pretreatment conditions, the sulfur-free fractions of aliphatic carboxylic acids, lignin, and extractives are primarily obtained. All these fractions are potentially interesting groups of compounds and can be used in a number of applications. Finally, the effects of pretreatments on pulping are also considered. Although it is believed that there are important advantages to be gained by integrating this type of renewable raw material-based production, in particular, with kraft pulping, sulfur-free pulping methods such as soda-AQ and oxygen/alkali delignification processes are also briefly discussed.

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Section: Fractionation Of Pretreatment Effluentsmentioning

confidence: 99%

Chemical Pretreatments of Wood Chips Prior to Alkaline Pulping - A Review of Pretreatment Alternatives, Chemical Aspects of the Resulting Liquors, and Pulping Outcomes

Lehto

Alén

2015

BioResources

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“…Further, utilising nanofiltration (NF) membrane in this technique has proven to be an effective technology for the removal of organic materials such as sugars and sugar alcohol depending on molecular weight of the sugars (152.15-150.15 g/mol). 9,10 Additionally, according to the NF membrane hydrophilicity that could potentially minimise fouling, etc., NF is recommended to be used for separation of xylitol from sugars. 9,11,12 Many types of polymers have been reportedly used to fabricate NF and UF membrane such as polyamide (PA), polysulfone (PSF) and polyethersulfone (PES).…”

Section: Introductionmentioning

confidence: 99%