Extraction of galactoglucomannan from thermomechanical pulp mill process water by microfiltration and ultrafiltration-Influence of microfiltration membrane pore size on ultrafiltration performance

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Galactoglucomannan is the major hemicellulose in process water from thermomechanical pulping of spruce. The recovery of hemicelluloses from this process water would both reduce the load on pulp mill water treatment plants and yield a biopolymer suitable as a raw material for renewable products. One method of recovering these hemicelluloses is two-stage filtration employing microfiltration to remove large contaminants, such as suspended matter and colloidal extractives, followed by ultrafiltration to concentrate and purify the hemicelluloses from low molecular mass contaminants. This investigation shows that a microfiltration membrane with a pore size of 0.1μm removes colloidal extractives while still maintaining a high amount of high molecular mass hemicelluloses in the microfiltration permeate. The removal of extractives resulted in an increase in the initial flux during the subsequent ultrafiltration step from 90 L/m2h to over 200 L/m2h.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kemiteknik

Nyckelord

Originalspråkengelska
Sidor (från-till)171-176
Antal sidor6
TidskriftChemical Engineering Research & Design
Volym105
StatusPublished - 2016 jan 1
PublikationskategoriForskning
Peer review utfördJa

Relaterad forskningsoutput

Thuvander, J., 2018, Lund: Department of Chemical Engineering, Lund University.

Forskningsoutput: AvhandlingDoktorsavhandling (sammanläggning)

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Related projects

Johan Thuvander, Ann-Sofi Jönsson & Ola Wallberg

2014/03/012018/04/06

Projekt: AvhandlingIndividuellt forskningsprojekt

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