Phytomanagement of a Trace Element-Contaminated Site to Produce a Natural Dye: First Screening of an Emerging Biomass Valorization Chain

The study of different possible biomass valorization routes is crucial in order to diversify phytomanagement options, allowing the landowner/stakeholder choose best option based on site characteristics and benefits local value chains. In current study, field laboratory experiments were conducted assess suitabilitity Malva sylvestris L. for phytoattenuation a dredged sediment disposal contaminated with trace elements (trace element (Cd, Cu, Pb, Zn). selected crop was sylvestris, flowering plant from which colourant can be extracted used dying textiles as way valorize produced grown this land. Under conditions investigated site, analysis TE matrix showed no effect M. contamination mobility an excluder phenotype (Bioconcentration factor < 1). Metal concentrations found highest leaves followed by stem flower. dye extract obtained flower part permitted silk alum-pretreated fabric dyed yellow, concentration textile fabrics respected threshold values set OEKO-Tex standard 100.