Nearly half of the dyes used in the textile and dye industry are azo dyes. Methyl orange is widely used as a water-soluble azo dye. With this in mind, the Flinders University nanotech researchers ...

For methyl orange, both materials absorbed approximately 70 % of the pollutant. Galstyan added, “We see diatomaceous earth as an eco-friendly and cost-effective solution for water treatment.” ...