Bujdei Andreea, Gavrilas Simona, Dochia Mihaela, Munteanu Florentina-Daniela
Abstract:
The present paper presents the results obtained in the attempt of valorisation of the natural pigments obtained from vegetable wastes by considering the principles of the circular economy. For this purpose, was used the waste from different technological steps of food preparation (outer leaves, spine with seeds). The extracted pigments were used for the dyeing of cotton fabric that firstly was bioscoured and bleached. The results showed that the treated cotton fabric presents good properties (weight loss, hydrophilicity, whiteness and colour intensity K/S, etc.). This paper also addressed to the monitoring of the parameters for the wastewater resulted after the treatment of cotton fabrics with the studied pigments. The results showed that the wastewater from the dyeing proved to comply with the imposed limits for the wastewater according to the environmental standards.