Abdulkadir, Yakubu, K. A. Bichi, F. H. Garba, Y. C. Itopa, Y. U. Jibrin, A. Salim, and A. I. Girei. 2021. “PROCESS FOR CHROMIUM (VI) REMOVAL FROM MECHANIZED TANNERY WASTEWATER USING ACTIVATED CARBON OBTAINED FROM TANNERY SOLID WASTES”. FUDMA JOURNAL OF SCIENCES 5 (1), 364 -71. https://doi.org/10.33003/fjs-2021-0501-577.