About the project

The paperChain Project “New Niche Markets for the Pulp and Paper Industry Waste based on circular economy approaches” intends to demonstrate the technical and environmental feasibility (TEF) of using different residues—generated in the Pulp & Paper Industry—as secondary raw material, with the aim of becoming competitive substitutes for the primary raw materials in near future.

This Project includes five large-scale demonstrators or demo-cases in different operational environments: Construction in Portugal (asphalt mixtures and concrete in roads), Spain (stabilised-soil layers in roads) and Slovenia (composite materials for slide stabilization in railways); Chemical in Sweden (bio-ethanol for secondary chemicals); and Mining in Sweden (sealing layers for reactive spoil).


Circular Case 1

Construction sector

Valorisation of Paper industry’s causticizing residuals (i.e. lime mud, slaker grits and green liquor dregs) as secondary raw materials for concrete and asphalt manufacturing.

Central Portugal:

Lime ash as concrete filler; slaker grits and dregs as aggregates for asphalt pavements.

Press Kit of this Circular Case (2020_09_11)


Descarregar o kit de imprensa português


Circular Case 2

Construction sector

Valorisation of ash produced in the energy recovery from paper waste produced by Recycling Pulp mills as alternative binder for soil stabilization works in road projects.

Norther Spain

WPA and WPBA as alternative hydraulic road binders.


Circular Case 4

Chemical sector

Valorisation of fibre sludge waste generated by the Pulp industry as secondary raw materials for the production of ethanol derivatives for the Chemical industry (i.e. Paints).

Central Sweden:

Fibre sludge for advanced chemicals based on bioethanol.


Circular Case 5

Mining sector

Valorisation of green liquor dregs produced by the Pulp industry as reactive sealing layers for acid rock drainage mitigation in mine waste deposits.

Norther Sweden

DREGS as sealing layer for mining spoil.



Coordinator of the Project

Juan José Cepriá
R&D Project Manager Acciona Construcción
Mobile: +34 637481416
Skype: juanjose.cepria.pamplona.ex


For Communication & Dissemination Activities

Antonio Cañas Rojas
Managing Director of Greenize Projects
Mobile: +34 661 780 885
Skype: antocanas