M. Mene, a French chemist, has just discovered that hydrate of alumina, prepared by decomposing alum with carbonate of soda, is a perfect substitute for animal charcoal in the decolorizing of liquids.
For high-purity applications, activated carbon filters should contain very low amounts of iron, typically 100 parts per million (ppm). Activated carbon with extremely high adsorptive capacities is ...
By Glenn Kenny A new musical imagines the invention of a decolorizing process. Will it save Black Americans from hatred or destroy them? By Jesse Green The new show “Black No More,” inspired ...