Muhammad GaladimaA., DabaiM.U., AhmadB.R. and UmarJ.I. 2023. UTILIZATION OF WASTE FOIL AND CARBIDE SLAG AS HETEROGENEOUS CATALYST FOR IN-SITU TRANSESTERIFICATION OF Ricinus Communis (CASTOR SEEDS). FUDMA JOURNAL OF SCIENCES. 6, 6 (Feb. 2023), 303 - 310. DOI:https://doi.org/10.33003/fjs-2022-0606-1184.