- “Design and Scale-up of Agitators for Gas Dispersion in Fermentors”, R. Rautzen, G. Benz and D. Dickey, presented at Engineering Foundation Conference on Mass Transfer and Scale-up of Fermentors, New England College, Henniker, NH, July 1977
- “Improved Starch Reactor Design”, G. Benz, Proceedings of 1990 Scientific Conference, Corn Refiners Association, Indianapolis IN, September 1990, pp121-136
- “Computational Fluid Mixing for Corn Wet Milling Applications”, G. Benz and A. Bakker, Proceedings of 1994 Scientific Conference, Corn refiners Association, Oakbrook, IL, September 1994, pp 185-192
- “Mixing in Industrial Fermenters”, A. Bakker, G. Benz, presented at Biotechnology Conference, Sydney, Australia, 1996
- “A Comparative Study of Alternative Gas Dispersion Impellers”, K. Myers, A. Thomas, A. Bakker and G. Benz, presented at Gas-Liquid Systems Session. Mixing XVI, Williamsburg, VA June 1997
- “ Proper Impeller Systems Insure Mixing Performance”, M. Reeder, G. Benz, Chemical Processing Magazine, July 1997, pp 63-64
- “Enhancement of Fermentation with Effective Impeller Systems”, G. Benz, Proceedings of 2001 International Symposium “New Horizons in Microbiology and Biotechnology”, Seoul Korea, June 2001, pp 153-154
- “Optimize Power Consumption in Aerobic Fermenters”, G. Benz, Chemical Engineering Progress, May 2003, pp 100-103
- “Impeller Selection for Agitated Aerobic Fermenters”, G. Benz, Chemical Engineering Progress, February 2004, pp18S-24S
- “Team Up with a Consultant for Equipment Selection”, G. Benz, Chemical Engineering Progress, August 2006, pp 50-51
- “The G-Value for Agitator Design: Time to Retire It?”, G. Benz, Chemical Engineering Progress, March 2007, pp 43-47
- “Selecting Agitator Seals for Bioprocessing Applications”, G. Benz, W. H.L. Teng, Chemical Engineering Progress, January 2008, pp 44-52
- “Piloting Bioreactors for Agitation Scale-Up”, G. Benz, Chemical Engineering Progress, February 2008, pp32-34
- “Agitation Challenges in Cellulosic Ethanol Production”, Ethanol Producer Magazine, March 2008
- “Sourcing Equipment in Developing Countries while Minimizing Risk”, Ethanol Producer Magazine, August, 2009.
- “Determine the Optimum Number of Process Trains”, G. Benz, Chemical Engineering Progress, January 2010, pp 50-51
- “Agitation of Fibrous Materials”, G. Benz, Chemical Engineering Progress, June, 2010, pp 28-32
- “Reduce Risk When Sourcing Abroad”, G. Benz and L. Du, Chemical Engineering Progress, October 2010, pp 32-36
- “Bioreactor Design for Chemical Engineers”, G. Benz, Chemical Engineering Progress, August, 2011, pp21-26
- “Determining Torque Split for Multiple Impellers in Slurry Mixing”, G. Benz, Chemical Engineering Progress, February, 2012, pp 45-48
- “Cut Agitator Power Costs”, G. Benz, Chemical Engineering Progress, November 2012, pp 40-43
- “Why Conduct Pilot Studies for Agitated Gas-Liquid Mass Transfer?”, G. Benz, Pharmaceutical Engineering, January/February 2013, Vol. 33 no. 1, pp1-3
- “Designing Multistage Agitated Reactors”, G. Benz, Chemical Engineering Progress, January 2014, pp 30-36
- “Pumps vs. agitators for tank mixing, classic case of CAPEX vs OPEX: white paper”, G. Benz, Biofuels Digest magazine (Online), May 4, 2014
- “Computing Dissolved Oxygen Profiles in Aerobic Fermenters”, G. Benz, A. Kulkarni, G. Kasat & D. Vedapuri, NAMF Presentation, June 2014
- “Large Scale Microbial Production of Advanced Biofuels: How big can we go?”, G. Benz, Biofuels Digest, online publication, December 2014
- “Optimizing Aerobic Fermenter Operation”, G. Benz, Chemical Engineering Progress, March 2016, pp.60-62
Technical Seminars Conducted
More than 50 seminars have been conducted by Mr. Benz over the years. Topics included agitator design for liquid motion, solids suspension and gas dispersion; mechanical design of agitators; bioprocessing application agitator design; fermenter design; non-intrusive mixing design and sanitary design concepts for pharmaceutical applications. Locations include USA, France, South Korea and China.
Patents
U.S. # 6883960, “Mixing arrangement for tanks.” A non-rotating, sealless method of mechanically agitating tanks