Summary
I am a graduate student in the Crystallization Process Control Group in the School of Chemical Engineering at Purdue University, West Lafayette. I am doing my PhD under the guidance of Professor Zoltan K. Nagy. My research interests concern the application of process systems engineering concepts to solve practical problems. Other interests include transport phenomena and reaction engineering.
Education
Purdue University PhD Chemical Engineering West Lafayette, Indiana
Graduating May 2015
GPA: 3.37
I research ways to optimally control crystallizers for use in the drug industry. Specifically, I am looking at ways to reduce the proportion of small crystals that are created during the process, which cause great difficulties downstream. The process modeling makes extensive use of the population balance equation framework.
• Developed a mathematical model of the plug-flow crystallization process that accounts for the effects of nucleation, growth, dilution, and dissolution.
• Solved the result nonlinear partial differential equation using high-resolution finite volume methods.
• Formulated the multiobjective optimization problem for optimizing multiple performance metrics simultaneously.
• Used the multiobjective genetic algorithm (NSGA-II) implemented in MATLAB to investigate the tradeoffs of various merit criteria with respect to design changes in the crystallizer.
• Developed a simultaneous design and control methodology that optimized the crystallizer’s control variables, as well as its geometry.
• Investigated the effect of parametric and control uncertainty on the process model using Monte Carlo methods.
Publications
1. Population Balance Model-Based Multiobjective Optimization of a Multisegment Multiaddition (MSMA) Continuous Plug-Flow Antisolvent Crystallizer. Bradley J. Ridder, Aniruddha Majumder, and Zoltan K. Nagy. Industrial & Engineering Chemistry Research 2014 53 (11), 4387-4397
2. Ridder, B.J.; Majumder, A.; Nagy, Z.K., "Population balance model based multi-objective optimization and robustness analysis of a continuous plug flow antisolvent crystallizer," American Control Conference (ACC), 2014, pp. 3530-3535, 4-6 June 2014. doi: 10.1109/ACC.2014.6859425
3. Ridder, B.J.; Majumder, A.; Nagy, Z.K., “Population balance model based multi-objective optimization of a continuous plug-flow antisolvent crystallizer,” 5th International Conference on Population Balance Modelling, Bangalore, India, September 11, 2013.
Awards
• Purdue University Ross Fellowship
• Eastman Conference Travel Grant 2013 ($500)
University of South Florida MS Chemical Engineering Tampa, Florida
Graduated May 2010
GPA: 3.91
I worked in the Applied Surface Science and Kinetics Laboratory on the development of photocatalysts for the treatment of industrial wastewaster.
• Synthesized combined InVO4-TiO2 photocatalysts via calcination of an organic precursor.
• Introduced defects and doping of nickel into the catalysts using high-energy planetary ball milling.
• Investigated the effect of various synthesis variables on the kinetic ...
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