Methylene blue, methyl orange, and a jug of coffee commune almost poetically, with the third of these acting attractively in opposition to the first two, in this newly published study: “Carbon Adsorbents from Spent Coffee for Removal of Methylene Blue and Methyl Orange from Water,” Inga Block, Christina Günter, Alysson Duarte Rodrigues, Silvia Paasc, Peter […]