Nour Shafik El-Gendy, PhD is a Professor in the field of Petroleum and Environmental Biotechnology and acting Head of the Process Design and Development Department at the Egyptian Petroleum Research Institute. She has published four chapters, four books, and 107 research papers in international journals and conferences. She is an expert in the field of environmental pollution, wastewater treatment, biofuels, petroleum upgrading, green chemistry, nanobiotechnology, valorization of wastes, and biocorrosion. Hussein Nabil Nassar, PhD is a researcher in the field of Petroleum and Environmental Biotechnology in the Petroleum Biotechnology Lab of the Process Design and Development Department at the Egyptian Petroleum Research Institute. He is an author of more than thirty-three research papers and has participates in nine international workshops and 15 international conferences. He is an expert in the fields of oil pollution, bioremediation, biosorption, biofuels, green chemistry, wastewater treatment, biodesulfurization, biodenitrogenation, and nanobiotechnology.