Membrane processes in the separation and utilisation of wood biomass in the context of the pulp and paper industry

• The recent developments in the field of biorefineries open new opportunities for the pulp and paper industry to diverse from classical carton and paper production to bio-based chemicals. The trend is thus to use the three key wood components hemicelluloses, lignin and cellulose as raw materials for production of a wide range of biochemicals. A key success factor is the integration of energy-efficient separation technologies to achieve price competitive products. Thus membrane filtration as an energy-efficient and highly selective technology can be an important unit of operation to support this trend.The presentation will demonstrate how membrane separation technology can be integrated in the concepts from the separation and purification of hemicelluloses, lignin and cellulose but also for the processing of side streams from the pulp industry and in the down-stream processing of the resulting biochemicals based on the wood biomass. Application and case studies will be presented for selected steps, e.g. ligninsulfonate from the sulfite pulping process or lignin in black liquor of the kraft pulping process.Furthermore, apart from the membrane opportunities in the production loops the focus will be also on opportunities in the water loops of these biorefinery concepts, e.g. reverse osmosis for evaporator condensate or membrane bioreactors for wastewater treatment.Overall, it will be shown that membrane processes as highly selective and energy-saving separation processes are in a strong position to become key units of operation in the concept of biorefineries.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Kemiteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Chemical Engineering (hsv//eng)

Nyckelord

Water

Membranes

Pulp and paper

Publikations- och innehållstyp

kon (ämneskategori)

vet (ämneskategori)