Andrew L. Zydney is Bayard D. Kunkle Chair and Professor of Chemical Engineering at Pennsylvania State University. He received his BS in Chemical Engineering from Yale University in 1980 and his Ph.D. in Chemical Engineering from Massachusetts Institute of Technology in 1985. His interest areas cover membrane separation systems for bioprocessing and medical devices; the purification of high-value biological products including recombinant proteins, gene therapy agents, and vaccines; and the application of membrane systems for bioseparations and artificial organs.