Coffee Colours to Cotton

Startdatum1 mei 2021
Einddatum30 april 2022
RegelingKIEM GoChem
  • Bètatechniek
  • Energie en Klimaat - In 2050 zijn grondstoffen, producten en processen in de industrie netto klimaatneutraal en voor tenminste 80% circulair
  • Energie en Klimaat - Een duurzaam gedreven, volledig circulaire economie in 2050. Voor 2030 is de doelstelling halvering van het grondstoffengebruik.
  • Creatieve industrie
  • Materialen - Made in Holland
  • Sustainable Development Goals voor inclusieve mondiale ontwikkeling
  • Circulaire economie en grondstoffenefficiëntie: Duurzame circulaire impact
  • Chemie
  • Sleuteltechnologieën en duurzame materialen

On a yearly basis 120 million kg of spent coffee ground (SCG) is disposed as waste. Two partners in the project have the intension to refine the valuable compounds from this coffee residue. One of these compounds is the group of melanoidins. It is proven that these natural polymers, with polyphenols incorporated, can be applied as colourant to textiles. These colourant compounds can be extracted from the SCG. In this project an industrial feasible dye recipe for SCG extract to cotton will be developed. This twostep dye method consists of a mordanting step and a colour uptake step. Both will be optimised to colour intensity and light and wash fastness. Parameters as cycle time and energy and water consumption, will be take into account to make the dye recipe applicable for industrial standards. Chemical analysis of mordant compounds (tannins) and colourants (polyphenols) will be carried out to quantify and qualify the uptake by cotton. With the results of this project, the partners will be able to support their customers of the SCG extract with a scientific based advise about the application as a textile dye to ensure a solid market acceptance of SCG extract. With the SCG extract as a professional biobased colorant in the market, companies in textile industry will have a wider choice in using environmental friendly products. At the end, this will lead to complete biodegradable products for consumers.


Avans Hogeschool

Patrick Kuijken, contactpersoon
Telefoon: 088-52591596


bij aanvang project
  • CaffeInk
  • Spaak Circular Solutions B.V.