Faculty of Chemical and Biomedical Engineering

Dr. Orhan Talu

Dr. Orhan Talu Professor
Ph.D., Chemical Engineering

Arizona State University

Thermodynamics of Adsorption, Adsorptive Natural Gas Storage, Numerical Methods, Molecular Simulations, Separation Processes.

Research Projects

Multicomponent/Pure Component Adsorption Equilibri

Our laboratories are well-equipped to measure adsorption equilibrium of multicomponent or pre component gas adsorption as a variety of solids including activated carbon, silica gel, and molecular sieve zeolites. At present, we operate two Cahn microbalances and 2 high-precision multicomponent systems.

Multicomponent/Pure component diffusivity in Microporous Solids

A major project is undertaken to measure diffusion through single zeolite crystals. Both binary diffusivities and pure component systems are being examined on a state-of-art system utilizing mass spectroscopy.

Molecular Sieve Zeolite Synthesis

High gravity synthesis of zeolites has been shown to yield large crystals. At present, the work is underway to grown zeolite membranes under high gravity.

Low Pressure Methane Storage

A variety of adsorbents are characterized with respect to their methane storage capacity at low to moderate gas pressures. The project is of vital industrial interest due to its potential for being used as an energy source in transportation. Future phases will involve the application of low pressure storage to gas mixtures, especially to natural gas.

Evaluation Of Multicomponent Gas Adsorption Models

A number of multicomponent gas adsorption models are being evaluated with respect to their applicability for highly non-ideal systems. Literature data is being compiled and organized as a data base. The goal is to accumulate knowledge useful for the selection of a model for a specific system. Project involves heavy computer application and some theoretical development.

Simulation of Molecular Behavior in Tight Pores

Surface phase behavior on flat surfaces (or large curvature pores) is well understood by classical and statistical thermodynamics. A very important class of applications involves shape selective systems which operate in a region where the molecules barely fit in the pore structure. Several computational techniques such as direct integration of potential, Monte Carlo and molecular dynamic simulations are being used to understand equilibrium and kinetic behavior of systems when molecular diameter approaches pore diameter. A variety of computational machines such as personal computers to Cray are being used in this project.


Selected Publications
  • Orhan Talu, "Needs, Status, Techniques and Problems with Binary Gas Adsorption Experiments," Adv. Colloid and Interface Sci., in press (1998)
  • Matthew S. Sun, D.B. Shah, Heather H. Xu and Orhan Talu, "Adsorption Equilibria of C1 to C4 Alkanes and CO2 and SF6 on Silicalite," J. Phys. Chem., 102, 1466 (1998)
  • Orhan Talu, Matthew S. Sun and D.B. Shah, "Duffusivities of n-Alkanes in Silicalite by Steady State Single Crystal Membrane Technique," AIChE J., 44, 681 (1998)
  • Heather X. Xu, D.B. Shah and Orhan Talu, "Synthesis of ZSM-5 Films at Elevetad Gravity," Zeolites, 19, 114 (1997)
  • Matthew S. Sun, Orhan Talu and D.B. Shah, "Diffusion Measurements Through Enbedded Zeolite Crystals," AIChE J., 42, 3001 (1996)
  • Matthew S. Sun, Orhan Talu and D.B. Shah, "Adsorption Equilibria of C5-C10 Normal Alkanes in Silicalite Crystals," J. Phys. Chem., 100, 17276 (1996)
  • Orhan Talu and Francis Meunier, "Adsorption of Associating Molecules in Micropores and Application to Water on Activated Carbon", AIChE J., 42, 809 (1996)
  • Paul M. Mathias, Ravi Kumar, J. Douglas Moyer,Jr., Joan M. Schork, Sree R. Srinivisan, Steven R. Auvil and Orhan Talu, "Correlation of Multicomponent Gas Adsorption by the Dual-Site Langmuir Model: Application to Nitrogen/Oxygen Adsorption on 5A-Zeolite," Ind. Eng. Chem. Res., 35, 2477 (1996)
  • Orhan Talu, Jianmin Li, Ravi Kumar, Paul Mathias, J. Douglas Moyer,Jr. and Joan M. Schork "Measurement and Correlation of Oxygen/Nitrogen/5A-Zeolite Adsorption Equilibria for Air Separation, Gas Sep. Purif., 10, 149 (1996)
  • Orhan Talu, D.B. Shah and S. Sun, "Molecular Diffusion in a Single Zeolite Crystal", p. 953, Fund. of Adsorption (Editor: M.D. LeVan), Kluwer (1996)
  • Orhan Talu and A.L. Myers, "Prediction of Adsorption of Polar and Non-Polar Gases on Silicalite by Molecular Simulation", p. 945, Fund. of Adsorption (Editor: M.D. LeVan), Kluwer (1996)
  • K.J. Chang and Orhan Talu, "Behavior and Performance of Adsorptive Natural Gas Storage Cylinders During Discharge", Applied Thermal Engineering, 16, 359 (1996)
  • Orhan Talu, Jianmin Li and Alan L. Myers, "Activity Coefficients of Adsorbed Mixtures", Adsorption, 1, 103 (1995)
  • Jianmin Li and Orhan Talu, "Adsorption Equilibrium of Benzene/p- Xylene Vapor Mixture on Silicalite", Chem. Eng. Science, 49, 189 (1994)
  • Orhan Talu, Si Yang Zhang and David T. Hayhurst, "Effect of Cations on Methane Adsorption by NaY, MgY, CaY, SrY and BaY Zeolites", J. Phys. Chem., 97, 12894 (1993)
  • Jan Malczyk, Orhan Talu and Robert Megargle, "Development of an Intelligent Motion Controller and Its Application to the Automation of a McBain-Bakr Balance", J. Autom. Chem., 15, 183 (1993)
  • Jianmin Li and Orhan Talu, "Structural Effect on Molecular Simulations of Tight-Pore Systems", J.Chem. Soc. Faraday Trans., 89, 1683 (1993)
  • Orhan Talu, "An Overview of Adsorptive Storage of Natural Gas", p. 655, Fund. of Adsorption (Editor: M. Suzuki), Kodansha (1993)
  • Jianmin Li and Orhan Talu, "Effect of Structural Heterogeneity on Multicomponent Adsorptin: Benzene and p-xylene Mixture on Silicalite", p. 373, Fund. of Adsorption (Editor: M. Suzuki), Kodansha (1993)
Recent Presentations
  • J. Guo, D.B. Shah and Orhan Talu, "Adsorption and Diffusion of Hydrocarbons in Industrial Adsorbents by Single-Pellet Wicke Kallenbach Technique," Topical Conf. on Separation Science and Technology, Los Angeles, November, 1997
  • Matthew S. Sun, D.B. Shah and Orhan Talu, "Micropore Diffusivity of n-Alkanes by Steady-State Single Crystal Membrane," Topical Conf. on Separation Science and Technology, Los Angeles, November, 1997
  • Orhan Talu, "Binary Gas Adsorption Data: Needs, Status, Techniques and Problems," Topical Conf. on Separation Science and Technology, Los Angeles, November, 1997
  • Hetaher H. Xu, M.S. Sun, D.B. Shah and Orhan Talu, "Separation of Light Alkanes Through Zeolite (MFI) Membranes," Topical Conf. on Separation Science and Technology, Los Angeles, November, 1997
  • Orhan Talu, "Needs, Status, Techniques and Problems with Binary Gas Adsorption Experiments," TRI/Princeton Workshop on Characterization of Porous Solids, Princeton, June 1997
  • S. Koehl, F. Dreisbach, R. Staudt and Orhan Talu, "Effect of Pressure on Infinite Dilution Activity Coefficients," AIChE Annual Meeting, Chicago, November 1996
  • H. Xu, D.B. Shah and Orhan Talu, "Synthesis of ZSM-5 Membranes at Elevated Gravity," AIChE Annual Meeting, Chicago, November 1996
  • M.Sun, Orhan Talu and D.B. Shah, "Binary Diffusion Measurements Using the Single Crystal Membrane Method," AIChE Annual Meeting, Chicago, November 1996
  • L. Liu and Orhan Talu, "Air Separation by Pressure Swing Adsorption," AIChE Annual Meeting, Chicago, November 1996
  • Orhan Talu, "Equilibrium Measurement Techniques for Screening New Adsorbent Materials," 5th World Congress of Chemical Engineering, San Diego, California, July 1996.
  • Orhan Talu, D.B. Shah, and S. Sun, "Molecular Diffusion in a Single Zeolite Crystal," AIChE Annual Meeting, Miami Beach, Florida, November 1995
  • Orhan Talu and Francis Meunier, "Adsorption of Associating Molecules in Micropores and Application to Water Adsorption on Activated Carbon," AIChE Annual Meeting, Miami Beach, Florida, November 1995
  • D.B. Shah, Orhan Talu, X.I. Lu and Hongbin Xu, "Moderation of Ammonium Concentration Spikes in Industrial Wastewater With Clinoptilolite," AIChE Annual Meeting, Miami Beach, Florida, November 1995
  • Orhan Talu and A.L. Myers, "Prediction of Adsorption of Polar and Non-Polar Gases on Silicalite by Molecular Simulation", 5th. Int. conf. on Fund. of Adsorption, Asilomar, California, May 1995.
  • Orhan Talu, D.B. Shah and S. Sun, "Molecular Diffusion in a Single Zeolite Crystal", 5th Int. Conf. on Fund. of Adsorption, Asilomar, California, May 1995.
  • K.J. Chang and Orhan Talu, "Dynamic Capacity of Adsorptive Natural Gas Storage Systems", AIChE Annual Meeting, San Francisco, November 1994.
  • Orhan Talu, D.B. Shah and S. Sun, "Continuous Heavy Metal Removal from Solutions and Slurries by Films of a New Ion-Exchange Media", AIChE Annual Meeting, San Francisco, November 1994.
  • Orhan Talu, D.B. Shah, S. Sun, K.W. Street, W.H. Warren and W.C. Won, "A New Ion-Exchange Media for Heavy Metal Removal from Solutions and Slurries", AIChE Annual Meeting, San Francisco, November 1994.
  • Orhan Talu, D.B. Shah, X.L. Lu and D.T. Hayhurst, "A New Ion-Exchange Media for Heavy Metal Removal", ACS Meeting, San Diego, CA, March 1994.
  • X.F. Lu and Orhan Talu, "Combined Gravimetric-Volumetric Technique for Binary Adsorption Equilibria Without Composition Measurement", AIChE Annual Meeting, St. Louis, Missouri, November 1993.
  • Jianmin Li and Orhan Talu, "Evaluation of Multicomponent Adsorption Data", AIChE Annual Meeting, St. Louis, Missouri, November 1993.
Professor Talu's Patents
  • Orhan Talu, "Gas Separation Process", U.S. Patent 5,160,512 (1992)
  • Orhan Talu, "Gas Storage Process", U.S. Patent 5,247,971 (1993)
  • Pieter J. von Herrmann and Orhan Talu, Utilization System for Gaseous Fuel Powered Vehicles," U.S. Patent 5,323,752 (1994)

If you have questions, comments, or suggestions, or need additional information, you can leave me a message at: talu@csvax.csuohio.edu

engaged learning
Mailing Address
Chemical and Biomedical Engineering Department
Fenn College of Engineering
Cleveland State University
2121 Euclid Ave., SH 455
Cleveland, Ohio 44115-2214
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Stilwell Hall Room 455
1960 East 24th Street
Phone: 216.687.2569
Fax: 216.687.9220
ChE@csuohio.edu
Contact
Jorge E. Gatica
j.gatica@csuohio.edu
Phone: 216.523.7274


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