|Name||Bruce E Logan|
|Affiliation||Penn State University|
|Contact information||Department of Civil and Environmental Engin.
212 Sackett Bldg
University Park, PA 16802
Tel: +1 814-863-7908
Scaling up microbial electrolysis cells for hydrogen production and microbial fuel cells for electricity generation.
|Abstract||Substantial progress has been made in producing hydrogen gas at the cathode in microbial electrolysis cells (MECs) that use bacteria that degrade organic matter to produce an electrical current. Two different designs have emerged based on tubular cells or plate-and-frame (flat) geometries. For both architectures, the choice of the electrode size and spacing can impact cathode packing densities and thus possible volumetric performance. For MECs, the main focus has been on minimizing overpotentials by using architectures with minimal spacing between the electrodes, and more efficient hydrogen evolution reaction (HER) catalysts. A greater effort has been made in scaling up microbial fuel cells to produce electricity than MECs, and thus lessons learned from MFCs can be applied to scaling up MECs. In this talk I show how a new electrode potential slope (EPS) method can be used to quantify electrode performance in these different systems, and discuss what the practical limits might be for hydrogen production rates per unit volume of reactor in MECs, and limits for volumetric power densities for MFCs.|
|Professor Bruce E. Logan is an Evan Pugh University Professor in Engineering and Director of the Penn State Hydrogen Energy Center. Logan is the former founding Editor of ES&T Letters published by the American Chemical Society (ACS). His current research efforts are in renewable energy production and the development of an energy sustainable water infrastructure. Dr. Logan has authored several books and over 500 refereed publications (>80,000 citations, h-index=140; Google scholar). Logan is a member of the US National Academy of Engineering (NAE), a foreign member of the Chinese Academy of Engineering (CAE), and a fellow of the American Association for the Advancement of Science (AAAS), the International Water Association (IWA), the Water Environment Federation (WEF), and the Association of Environmental Engineering & Science Professors (AEESP). Dr. Logan is a visiting professor at several universities including HIT, Tsinghua University, Dalian University of Technology (China), with ties to several other universities in Saudi Arabia, the UK, and Belgium. He received his Ph.D. in 1986 from the University of California, Berkeley, and prior to joining Penn State in 1997 he was at the University of Arizona in Tucson.|