Title:
Biomass Residues as a Source of Natural Dyes for Textile Industries: the Case Study of Cork Powder
Author(s):
Coelho Pinheiro, M.N., Castro, L.M., Veloso, A.C., Moreira, M.J., Lagoa, B., Ferreira, D.
Document(s):
Paper
Poster
Abstract:
The possibility of valorising cork powder, the most relevant residue of cork stopper producing activity, as a source of bio-dyes for the textile industry was evaluated in order to be an economically and environmentally sustainable way to replace chemical dyes by natural compounds. The aqueous extraction process of natural bioactive compounds from cork powder was optimized, modifying the temperature (30 ºC and 100 ºC) and the concentration of cork powder (5, 10 and 20 g/L) used in the extractions. The three textiles substrates used (cotton, cationized cotton and wool) presented a brownish hue after dyeing, more intense in the cotton with the cationization pre-treatment. The colouration obtained was uniform with a good light colour fastness performance. In general, the colour is more intense for textiles immersed in extracts obtained with higher concentration of cork powder and higher extraction temperature, but with more noticeable results in the wool and cationized cotton. The results show that cork powder can be highly valorised as a source of bio-dyes improving the implementation of the circular economy in the cork sector.
Keywords:
biomass, forestry, biobased products, green chemistry
Topic:
Biomass Conversion Technologies for Energy Carriers, Chemicals and Materials
Subtopic:
Production and application of biobased chemicals
Event:
27th European Biomass Conference and Exhibition
Session:
3DV.4.27
Pages:
1450 - 1455
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-3DV.4.27
Price:
FREE
