A chemometric approach to understanding the bioelimination of anionic, water-soluble dyes by a biomass - Part 4: Reactive dyes

The bioelimination of a series of hydrolysed reactive dyes of known chemica l structure has been determined using a new, rapid and robust laboratory me thod and a chemometric analysis conducted on the bioelimination results. Th e level of bioelimination varies from 0% up to only 25% and the chemometric analysis indicates that if either the number of aromatic rings increases o r the number of 2-hydroxyethylsulphone groups decreases, then the bioelimin ation increases. To maximise the bioelimination of reactive dyes, large, pl anar triazine-based dyes should be used.