About

Benjamin J. Glasser is a Distinguished Professor at Rutgers University, serving in the Department of Chemical and Biochemical Engineering. His research focuses on particle technology, flow and segregation of granular materials, the mechanics of fluidized beds, multiphase flows and reactors, drying of particles, pharmaceutical engineering, and catalyst manufacturing. He has held leadership roles such as Director of the Pharmaceutical Engineering Program and Director of the Catalyst Manufacturing Science and Engineering Center at Rutgers. Dr. Glasser has received numerous honors, including being an Consulting Editor for the AIChE Journal, receiving the Scholar-Teacher Award from Rutgers University, and awards for excellence in particle technology and poster presentations. His educational background includes a Ph.D. in Chemical Engineering from Princeton University and degrees from the University of the Witwatersrand in South Africa. He has been a faculty member at Rutgers since 2005 and has contributed significantly to research and education in chemical engineering.

Research topics

• Computer Science
• Engineering
• Thermodynamics
• Mechanics
• Process engineering
• Physics
• Materials science
• Mathematics
• Biological system
• Manufacturing engineering
• Acoustics
• Reliability engineering
• Mechanical engineering
• Geology
• Composite material
• Chemical engineering
• Operations management
• Biochemical engineering

Selected publications

• A Digital Twin of a Vacuum Filter-bed Dryer

  SSRN Electronic Journal · 2025-01-01

  preprintOpen access
  PublisherDOI

• The effect of intermittent mixing on the rate of drying of L-threonine in an agitated filter dryer

  Advanced Powder Technology · 2024-11-22 · 2 citations

  articleOpen accessSenior authorCorresponding

  • Intermittent mixing was studied during agitated filter bed drying. • The drying rate was measured for L-threonine in a laboratory scale dryer. • Agitation ratio (proportion of the total time the agitator is active) was varied. • Intermittent cycle number (number of on/off cycles) was varied. • Additional mixing beyond a critical value provided little benefit. Intermittent mixing, alternating periods of agitation and no agitation, is often applied during the drying of active pharmaceutical ingredients in agitated filter dryers. Intermittent mixing is used as a strategy to obtain reasonable drying rates without obtaining unacceptable levels of particle attrition. In this work, the impact of intermittent mixing on drying of L-threonine was investigated experimentally. Two process parameters: the agitation ratio (proportion of the total time the agitator is active) and the intermittent cycle number (number of on/off cycles), determine the intensity and distribution of agitation. Increasing the agitation ratio from a static bed, the drying rate initially increased significantly, followed by a gradual increase at higher agitation ratios. Furthermore, the drying rate initially improved with increasing intermittent cycle number, but beyond a critical value reached a plateau. Thus, we observe that additional mixing beyond a critical value provides little benefit in terms of the drying rate but can be detrimental in terms of attrition. These findings provide understanding for development of intermittent mixing protocols.

  PublisherDOI

• Heat transfer of cohesive particles in a rotary drum: Effect of material properties and processing conditions

  Powder Technology · 2024-08-25 · 2 citations

  article
  PublisherDOI

• Fluidized bed drying of supported Catalysts: Effect of process parameters

  Chemical Engineering Science · 2023-09-12 · 3 citations

  articleSenior authorCorresponding
  PublisherDOI

• Scale-up of heat transfer in a rotary drum equipped with baffles

  Powder Technology · 2023-08-07 · 7 citations

  article
  PublisherDOI

• Single-tablet-scale direct-compression: An on-demand manufacturing route for personalized tablets

  International Journal of Pharmaceutics · 2023-07-26 · 10 citations

  article
  PublisherDOI

• The effect of intermittent mixing on particle heat transfer in an agitated dryer

  Powder Technology · 2023-03-21 · 5 citations

  articleOpen accessSenior authorCorresponding

  Intermittent mixing, alternating agitation and no agitation, is an approach to maintain a high drying rate while minimizing particle breakage in agitated filter drying of the active pharmaceutical ingredient. In this study, the effect of intermittent mixing on heat transfer of particles was examined using DEM simulations. The agitation ratio (the fraction of time the agitator is on) and intermittent cycle number (the number of on/off cycles) represent the extent and allocation of agitation, respectively. It was observed that as the agitation ratio increases from the static bed, the rate of heat transfer and temperature uniformity initially increased sharply, and then more gradually for high agitation ratios. Additionally, the rate of heat transfer and temperature uniformity initially increased with intermittent cycle number, then reached a plateau. The results were fitted using a power law which predicted the rate of heat transfer as a function of the intermittent mixing parameters.

  PublisherDOI

• DEM analysis of the thermal treatment of granular materials in a rotary drum equipped with baffles

  Chemical Engineering Science · 2022 · 21 citations

  • Materials science
  • Mechanics
  • Composite material
  PublisherDOI

• Scale-up of granular material flow in an agitated filter dryer

  Powder Technology · 2022-06-29 · 4 citations

  articleSenior author
  PublisherDOI

• Optimization of key energy and performance metrics for drug product manufacturing

  International Journal of Pharmaceutics · 2022 · 28 citations

  • Computer Science
  • Process engineering
  • Computer Science
  PublisherOA PDFDOI

Recent grants

• Segregation and Spatio-Temporal Dynamics of Granular Shear Flows

  NSF · $146k · 2005–2008

• PFI:AIR-RA: Commercializing Pharmaceutical Process Modeling for Continuous Manufacturing

  NSF · $834k · 2015–2019

• GOALI: Segregation of Sheared Particle Mixtures

  NSF · $259k · 2007–2011

Frequent coauthors

• Johannes Khinast

  Research Center Pharmaceutical Engineering (Austria)

  103 shared

• Fernando J. Muzzio

  Rutgers, The State University of New Jersey

  29 shared

• Simone Schrank

  University of Graz

  23 shared

• Eva Roblegg

  University of Graz

  22 shared

• Andreas Zimmer

  University of Bonn

  18 shared

• Troy Shinbrot

  Rutgers, The State University of New Jersey

  17 shared

• Stefan Radl

  Graz University of Technology

  16 shared

• Stephen L. Conway

  Merck & Co., Inc., Rahway, NJ, USA (United States)

  15 shared

Awards & honors

• Consulting Editor, AIChE Journal, 2012
• Rutgers School of Engineering Outstanding Graduate Student A…
• ISPE Poster of the Year Award (with M. Metzger), 2009
• AIChE Particle Technology Forum Best Poster Award (with B. R…
• The Scholar-Teacher Award from the President of Rutgers Univ…