Dr. Ahmed Fayez Nassar received his Ph.D. in Chemical Engineering from Erlangen-Nuremberg University, Germany. He is currently an Associate Professor at the Chemical Engineering Department, Cairo University. His research interest includes sustainability environmental applications, CFD simulation for different applications, process design, and food processing. He is the co-author of more than 20 publications. He is currently working on indoor air quality, mixing of liquids, and food processing.