Recycling Used Lubricating Oil Using Untreated, Activated and Calcined Clay Methods

J. D. Udonne, V. E. Efeovbokhan, A. A. Ayoola, D. E. Babatunde, Ajalo Ifeoluwa and I.J. Ajalo

Journal of Engineering and Applied Sciences 11 ( 6 ): 1396 - 1401 , 2016