Diatomaceous earth performed significantly better: within an hour, up to 100% of methylene blue was removed, whereas silica removed only 88% of the dye in the same period. For methyl orange ...

Azole dyes make up over half of the dyes used in the textile and dye industry. Methyl orange is a common azo dye that dissolves in water. With this in mind, Flinders University nanotech ...