Kankia, M.U. and Baloo, L. and Mohammed, B.S. and Hassan, S.B. and Ishak, E.A. and Zango, Z.U. (2020) Review of petroleum sludge thermal treatment and utilization of ash as a construction material, a way to environmental sustainability. International Journal of Advanced and Applied Sciences, 7 (12). pp. 68-81. ISSN 2313626X