Okereke, Chidi Donatus
Engr. Prof. C.D Okereke B.Eng. First Class, MSc., PhD, FNES and Engr. Prof. Th.I. Onyeche B.Eng., MSc., PhD, FNSE, are Professors of Environmental Engineering at Federal University of Technology, Owerri, Nigeria and CUTEC - Forschungszentrum Germany, respectively. They have patents of some of their works with distinguished experience in the field.