Valorization of mango peel waste into phosphoric acid treated activated carbon for efficient removal of methyl orange from aqueous solution

Description

Smruti Rekha Patra and Sneha Prabha Mishra turn mango peel waste into a treated carbon that strips an industrial dye from water. In 2026, the study treats peel with phosphoric acid and then carbonizes it, creating a low-cost matter that attracts pollutants to its surface. The target dye is methyl orange, a negatively charged colouring agent common in factory wastewater.

Untreated peel removed only about a fifth of the dye, while the treated carbon removed over ninety-seven percent from a test solution at a set concentration. Best results came after sixty minutes at strongly acidic states, and the matter held about twenty-three milligrams of dye per gram at saturation. The carbon could be washed and reused for two more cycles, so the work offers wastewater handlers a cheap, reusable option made from food waste.

Catalog record

Source: https://europepmc.org/articles/PMC13483161