ABDULKADIR, Y.; BICHI, K. A.; GARBA, F. H.; ITOPA, Y. C.; JIBRIN, Y. U.; SALIM, A.; GIREI, A. I. PROCESS FOR CHROMIUM (VI) REMOVAL FROM MECHANIZED TANNERY WASTEWATER USING ACTIVATED CARBON OBTAINED FROM TANNERY SOLID WASTES. FUDMA JOURNAL OF SCIENCES, v. 5, n. 1, p. 364 - 371, 28 Jun. 2021.