1. Ph.D. Student, Environmental Engineering Program, Dept. of Biomedical, Chemical and Environmental Engineering, Univ. of Cincinnati, M/L 0012, Cincinnati, OH 45221-0012.
2. Associate Professor, Environmental Engineering Program, Dept. of Biomedical, Chemical and Environmental Engineering, Univ. of Cincinnati, M/L 0012, Cincinnati, OH 45221-0012 (corresponding author).