Dr. Rumana Riffat is Professor of Civil and Environmental Engineering at George Washington University in Washington, DC. Her research interests include wastewater treatment, specifically nutrient removaland anaerobic treatment of wastewater and biosolids. Dr. Taqsim Husnain is Assistant Professor in the Department of Engineering at William Jewell College in Liberty, MO. His research interests include sustainable water and wastewater treatment with advanced membrane separation processes and resource recovery from wastewater.