Most dyeing processes are today in aqueous solution, which causes major problems with the separation of dyes, by-products and other chemical waste. Unclean water is released straight into the environment, resulting in major environmental and health risks. The aim of this project is to develop a much improved and more environmentally friendly method for dyeing biofibres, such as cotton. The method involves using supercritical carbon dioxide (scCO2) as a solvent in a closed system.
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