Dr. Mark Trebble has over 30 years of experience in process engineering, gas processing, and natural gas liquids extraction. He received his Ph.D. in chemical engineering in 1986 and has since held various academic and industry positions. Currently, he is the Head of Process Engineering at Sea NG Corporation, where he is responsible for the design of facilities for compressed natural gas transport. He has extensive experience conducting research, publishing papers, supervising graduate students, and consulting on gas plant design and optimization projects.

1. CV: Dr. Mark A. Trebble, Ph.D., P.Eng.
Affiliation: Head of Process Engineering with Sea NG Corporation Ltd.
Areas of Expertise:
• Process Simulation
• Gas Processing
• Natural Gas Liquids Extraction
• Cryogenic Processing and LNG Technology
• Equations of State/Thermodynamics
Career Overview:
I graduated with distinction as a Chemical Engineer in 1981 and joined Stearns-Roger (a
high profile Engineering Procurement and Design Company) where I was trained in gas
plant design and cryogenic ethane extraction. I returned to university in 1983, completing a
Ph.D. in 1986 in the area of thermodynamics, and developed the Trebble-Bishnoi equation
of state. I joined the University of Calgary subsequent to my graduation and was promoted
to full professor in 1996. I served on the UC Faculty undergraduate curriculum committee
for almost 15 years and was Associate Dean of undergraduate studies at the department
level from 1995-1999.
I moved to Curtin University in March of 2006 as Associate Professor and was promoted to
Professor in the position of the Western Australia Energy Research Alliance (WAERA) Gas
Technology Program Leader four months later for a four year term. I took an Adjunct
position at Curtin in January of 2010 which expired in December of 2012 and am now
involved in independent consultancy. I have published 38 journal papers and have
supervised 20 graduate students. My research group has measured some interesting data
including heavy hydrocarbon solubilities, mass transfer rates in systems of heavy
hydrocarbons in contact with supercritical CO2 and ethane, diffusivities in CO2-hydrocarbon
systems, foaming in amine systems, CO2 freezing in natural gas systems, and cryogenic
PSA applications. .
I have worked as an independent consultant to the gas processing industry for over 30
years primarily in the areas of gas processing and cryogenic hydrocarbon liquid
extraction. I hold patents in four countries in the area of gas processing and have several
applications running in commercial facilities.
My most recent work has been with Sea NG, a company involved in pioneering
commercial compressed natural gas (CNG) transport. We have undertaken pilot plant
testing, dynamic simulation, and a thorough process development which is complicated
by issues associated with marine transport. Work on a number of projects has proceeded
to Pre Feed which is very encouraging and points to an initial industrial application in the
near future.

2. Comprehensive Curriculum Vitae
Industrial Work Experience:
1991 - Present President of T&T Consulting Ltd. (479711 AB LTD).
I have operated my own engineering consulting company since 1991
and have worked on a variety of industrial projects highlighted
below:
2004 - Present Head of Process Engineering for Sea NG. Responsible for design of
shore facilities for all compressed natural gas (CNG) shipping
facility proposals. Pilot plant testing for thermal transients observed
during coselle filling and emptying. Simulation of all aspects of gas
processing and conditioning surrounding the technology.
2013 – Present Consulting Engineer for AltaGas on several projects at the
Harmattan, JEEP, and Gordondale facilities including plant
modifications relating to the cryogenic recovery of ethane, heat
recovery systems, amine units, and heavy hydrocarbon separation
and refining systems.
1998 – 2013 Rating and engineering modifications at the Taylor gas plant which
processes 650 MMscfd. I designed plant modifications to
accommodate flow increases and richer feed. My first patent has
also been installed in two of the cryogenic trains at this facility.
Ethane recovery was increased by roughly 10% as a result of the
patent implementation.
2009 – 2010 Consultant to Mistral energy for the design of ethane extraction and
fractionation facilities as well as a waste heat recovery project.
1992 - 2005 Straddle plant evaluation and optimization at the Cochrane
Extraction plant (near Calgary) which extracts ethane and NGL from
2.5 Bcfd of transmission line natural gas. I have conducted
numerous plant performance tests and Hysys plant ratings for the
entire plant and have completed detailed process engineering for
modifications in the following areas: refrigerated oil absorption
plant, cryogenic ethane extraction trains, deethanization, amine
sweetening, food grade CO2 production unit, refrigeration units
(Freon and Propane), and recompression. My first patent has been
installed in all three cryogenic units at the plant. Developed a
procedure for taking DCS data directly into a Hysys simulation so
that on-line performance testing could be done routinely.

3. 1997 - 2005 Simulation and plant modifications for several very large ethane
extraction facilities in Empress Alberta (total capacity of all plants in
excess of 6 Bcfd). I performed front end engineering for the Empress
5 facility and have studied modifications to allow higher ethane
recovery at several of the Empress plants including Empress 1, 2, 4,
5 and the Petro-Canada plant.
1999 – 2005 I did the complete front-end process engineering for the JEEP facility
which extracts ethane from the fuel gas used at the JOFFRE
polyethylene plant (roughly 195 MMscfd). This design was
challenging since the company purchased an existing set of
equipment that was designed for a different location and we had to
rerate all of the existing equipment to ensure its applicability for the
JEEP plant. My second patent (DOR) is operational at this facility.
2004 – 2005 Design of the Tabnak facility in Iran which processes 1.6 Bcfd in two
trains. I did the simulations and detailed engineering for the slug
catcher, the inlet stabilization unit, the ethane extraction trains, the
inlet molecular sieve, the inlet gas chilling, the fractionation plant,
the refrigeration system and the NGL refrigerated storage facility.
1998 – 1999 Design work for the Suncor olefins project which recovers liquids
from a hydrogen rich gas containing substantial amounts of ethylene
and propylene.
1997 – 1998 Process simulation and design on the Venezuelan ACCRO project
for TCPL. Project included two 400 MMscfd NGL extraction units
and a 50000 bbl/d NGL fractionation plant.
1995 - 1998 Thermodynamic modelling, engineering design, and rating of
formaldehyde plants for CalPolymers, Pocatello, ID, USA.
1997 Consultant to Delta Engineering on the ARCO project in Qatar. My
work focused on cryogenic processing and utilities.
1995 Simulation of a process to produce LNG at an ethane extraction plant
1991 - 1992 Consultant for Cominco Engineering Services Ltd. overseeing an
experimental laboratory set-up and dynamic reactor modelling of a
moving bed magnesium oxide chlorinator.
1990 - 1991 Independent consultant for the Magnesium Company of Canada
(MagCan). I worked on the calcination and chlorination reactor
design, the Wellman CO generator and the gas cleaning operation. I
was able to find a solution to a year long plant start-up bottleneck by

4. simulating the moving bed reactor and developing an alternative
reactor start-up procedure.
1988 - 1990 Consultant for Delta Engineering. Gas plant and ethane extraction
facility design. Process audit of the Caroline Gas Plant.
1988 Development of a program for PetroCanada to simulate temperature
profiles in an oil producing well during hot oil dewaxing.
1987 - 1988 Development work for Hyprotech including the introduction of the
Trebble-Bishnoi equation of state into the C release, interaction
parameter regression programs, data bases for pure components, and
evaluation of binary interaction parameters.
1981 - 1983 Process Engineer with Stearns-Roger. Two years design experience
in ethane extraction and gas plants. Responsibilities included process
inception, simulation, PFD and P&ID development, sizing, data
sheet preparation and control systems.
1980 Summer Student Engineer in Training, Suncor Rosevear Gas Plant, Edson,
Alberta. Several plant projects were undertaken including a rating of
the amine sweetening unit and the molecular sieve dehydration unit.
Education:
1986 - Doctor of Philosophy in Chemical Engineering
Dept. of Chemical and Petroleum Engineering, University of Calgary
1981- Bachelor of Science in Chemical Engineering (Distinction)
Dept. of Chemical and Petroleum Engineering, University of Alberta
Research Grants:
2007-2009 PSA Chevron Funding (collaborative) $1,026,000
2007-2009 PSA ARC Linkage (collaborative) $263,000
2007-2009 LNG-VLE Chevron Funding (collaborative) $727,000
2007-2009 LNG-VLE ARC Linkage (collaborative) $390,000
2007 LNG Processing Chevron Funding (collaborative) $185,000
2006 LNG Processing Chevron Funding (collaborative) $115,000
2006-2009 Curtin University Start-up Grant $ 25,000
2004 - 2008 NSERC Individual Operating Grant $120,000
2002 NSERC Individual Operating Grant $ 18,000
1998 - 2001 NSERC Individual Operating Grant $ 82,800
1994 - 1997 NSERC Strategic Grant $269,500
1994 - 1997 NSERC Individual Operating Grant $ 57,000

5. 1991 - 1994 NSERC Individual Operating Grant $ 60,000
1990 NSERC Equipment Grant $ 22,430
1990 NSERC Equipment Grant $ 89,171
1988 - 1991 NSERC Individual Operating Grant $ 54,000
1987 - 1988 NSERC Individual Operating Grant $ 13,000
1986 - 1987 President's NSERC Research Fund $ 5,000
Graduate Student Supervision
Baker, J. M.Eng. 1994 - 1996 Supervisor
Bergner, H. M.Eng. 1989 - 1990 Supervisor
Chandan, N. M.Eng. 2003 - 2005 Supervisor
Chelico, A. M.Sc. 1994 - 1997 Supervisor
Dedora, N. M.Eng. 1993 - 1995 Supervisor
Hofman, P. Ph.D. 2008 – 2010 Co-Supervisor
Kalaga, A. M.Sc. 1994 - 1996 Supervisor
Kedge, C. M.Eng. 1993 - 2000 Supervisor
Kedge, C. Ph.D. 2000 - 2007 Co-Supervisor
Krenz, R. Ph.D. 2001 - 2005 Co-Supervisor
Le, Tan M.Sc. 2004 - 2005 Supervisor
Lastari, Fonny Ph.D. 2006 –2010 Co-Supervisor
Peira, J. M.Eng. 1995 - 1999 Supervisor
Pollitt, W. M.Eng. 2001- 2002 Supervisor
Salim, P. H. M.Sc. 1989 - 1991 Supervisor
Salim, P. H. Ph.D. 1991 - 1995 Supervisor
Sauve, R. E. M.Sc. 1989 - 1991 Supervisor
Singh, H. M.Eng. 2002 – 2005 Supervisor
Swallow, J. M.Eng. 2000 - 2005 Supervisor
Wong, J. M.Eng. 1993 -1995 Supervisor
Wu, J. M.Eng. 2001 - 2005 Supervisor
Yanicki, G. M.Sc. 1994 - 1998 Supervisor
Patents
1. “Apparatus for and method of separating a hydrocarbon gas into two fractions and a
method of retrofitting an existing cryogenic apparatus”, US Patent 6237365 issued
May 29, 2001. (This patent is also held in Canada and Australia).
2. “Apparatus and method for demethanization and method of retrofitting an
installation for liquefying gas”, UK Patent No. GB 2351342, Issued December 12,
2001.
3. “Hydrocarbon Gas Processing”, US Patent 6516631, Issued Feb 11, 2003.
4. “Method, system and apparatus for separating one or more components from a
fluid”, Provisional Australian Patent Application, Filed Oct 23, 2009.

6. Publications
1. Lastari, F., Pareek, V., Trebble, M., Tade, M., Chinn, D., Tsai, N., and Chan, K.,
2012, “Extractive Distillation for CO2-ethane Azeotrope Separation, Chem. Eng.
And Processing: Process Intensification, Vol. 52, Feb., 155-161.
2. Stenning, D., Fitzpatrick, J and Trebble, M., “A Simpler Way?”, 2011, LNG
Industry, Autumn, 1-4.
3. Kandil, M.E., May, E.F., Graham, B.F., Marsh, K.N., Trebble, M.A., Trengove,
R.D., and Huang, S., 2010, “Vapour liquid equilibria measurements of methane + 2-
methylpropane (isobutane) at temperatures from 150 to 250 K and pressures to 9
MPa, J. Chem. Eng. Data, 55, (8), 2725-2731.
4. Giraldo, C.A., Clarke, M.A., and Trebble, M.A., 2009, “Prediction of CO2 freeze-
out conditions and CO2 hydrate formation conditions with a single equation of
state”, Published On-Line Dec 4 in Chem. Eng. Comm.
5. Watson, G., May, E.F., Graham, B.F., Trebble, M., Trengove, R., Kaman, C.,
2009, "Equilibrium adsorption measurements of pure nitrogen, carbon
dioxide and methane on a carbon molecular sieve at cryogenic
temperatures and high pressures", J. Chem. Eng. Data, 54, (9), 2701-2707.
6. Trebble, M.A., 2007, “Plant Performance Test for the De-ethanizer Overhead
Recycle (DOR) Process”, Asia Pacific J. Chem. Eng., 2, 438-441.
7. Le, Tan and Trebble, M.A., 2007, “Measurement of Carbon Dioxide Freezing in
Mixtures of Methane, Ethane and Nitrogen in the SVE Region”, J. Chem. Eng. Data,
52(3), 683-686.
8. Yanicki, G. and Trebble, M.A., 2006, “Experimental Measurements of Foaming
Tendencies in Aqueous Gas Sweetening Solutions Containing MDEA”, Chem. Eng.
Comm., 193, 1-13.
9. Kedge, C.J. and Trebble, M.A., 2004, “Improvements to a New Equation of State
for Pure Components”, Fluid Phase Equilibria, 215, 91-96.
10. Kedge, C.J. and Trebble, M.A., 2002, “An Empirical Near Critical Correction for
Cubic and Non-Cubic Equations of State”, Fluid Phase Equilibria 194-197, 401-409.
11. Kedge, C.J. and Trebble, M.A., 1999, "Development of a New Empirical Non-Cubic
Equation of State", Fluid Phase Equilibria, 158-160, 219-228.
12. Kalaga, A. and Trebble, M.A., 1999, “Density Changes in Supercritical Solvent +
Hydrocarbon Solute Binary Mixtures”, J. Chem. Eng. Data, 44, 1063-1066.
13. Baker, J. and Trebble, M.A., 1998, "The Development of an Apparatus for Mass
Transfer Studies in Supercritical Fluids", IEC Res, 37, 5, 1991-1997.
14. Satyro, M.A. and Trebble, M.A., 1998, "A Correction to Sandler-Wong Mixing
Rules", Fluid Phase Equilibria, 143, 89-98.
15. Kalaga, A. and Trebble, M.A., 1997, "Solubilities of Tetracosane, Octacosane, and
Dotriacontane in Supercritical Ethane”, J. Chem. Eng. Data, 42, 368-370.
16. McCarthy, J. and Trebble, M.A., 1996. "An Experimental Investigation Into the
Foaming Tendency of Diethanolamine Gas Sweetening Solutions", Chemical
Engineering Communications, 144, 159-171.
17. Satyro, M.A. and Trebble, M.A., 1996. "On the Applicability of Sandler-Wong
Mixing Rules for the Calculation of Thermodynamic Excess Properties", FPE, 115,
135-164.

7. 18. Salim, P.H. and Trebble, M.A., 1995. "An Evaluation of Mixing Rules for the
Trebble-Bishnoi Equation of State", I&EC Research, 34, 3112-3128.
19. Salim, P.H. and Trebble, M.A., 1995. "A Generalized Equation of State Approach
to Prediction of Phase Behaviour in CO2-Bitumen Systems", Journal of
Supercritical Fluids, 8, 6-14.
20. Salim, P.H. and Trebble, M.A., 1995."Modified Interacting-Sphere Model for Self-
Diffusion and Infinite-Dilution Mutual-Diffusivity of n-Alkanes", JCFTEV(2), 245-
250,1995.
21. Salim, P.H. and Trebble, M.A., 1994. "Modelling of Solid Phases in
Thermodynamic Calculations With a Translated Cubic Equation of State", Fluid
Phase Equilibria, 93, 75-99.
22. Trebble, M.A., Salim, P.H., and Sigmund, P.M., 1993. "A Generalized Approach to
Prediction of Two and Three Phase CO2-Hydrocarbon Equilibria”, Fluid Phase
Equilibria, 82, 111-118.
23. Sigmund, P.M., and Trebble, M.A., 1992. "Phase Behaviour Prediction in
Supercritical Systems Using Generalized Solute Critical Properties", Canadian
Journal of Chemical Engineering, 70, 814-817.
24. Salim, P.H., and Trebble, M.A., 1991. "Thermodynamic Property Predictions From
the Trebble-Bishnoi-Salim Equation of State", Fluid Phase Equilibria, 65, 41-57.
25. Salim, P.H., and Trebble, M.A., 1991. "A Modified Trebble-Bishnoi Equation of
State: Thermodynamic Consistency Revisited", Fluid Phase Equilibria, 65, 59-71.
26. Trebble, M.A., 1991. "The Impact of Asymmetric Equation of State Mixing Rules
on Thermodynamic Property Predictions for Normal Alkanol-Hexane Binaries",
Fluid Phase Equilibria, 65, 73-88.
27. Sigmund, P.M. and Trebble, M.A., 1991. "Development of a Generalized Peng-
Robinson Procedure for Prediction and Interpretation of Immiscible CO2 - Reservoir
Oil Phase Behaviour", AIChE Symp. Ser., No. 280, Vol. 87, 55 – 63.
28. Trebble, M.A. and Sigmund, P.M., 1990. "A Generalized Correlation for the
Prediction of Phase Behaviour in Supercritical Systems", Canadian Journal of
Chemical Engineering, 68, 1033 - 1039.
29. Englezos, P., Kalogerakis, N., Trebble, M.A., and Bishnoi, P.R., 1990. "Estimation
of Multiple Binary Interaction Parameters in Equations of State Using VLE Data:
Application to the Trebble-Bishnoi Equation of State", Fluid Phase Equilibria, 58,
117-132.
30. Trebble, M.A., 1990. "An Evaluation of Multiple Binary Interaction Parameters in
Cubic Equations of State", Canadian Journal of Chemical Engineering, 68, 487-492.
31. Trebble, M.A., 1989. "A Preliminary Evaluation of Two and Three Phase Flash
Initiation Procedures", Fluid Phase Equilibria, 53, 113-122.
32. Trebble, M.A. 1989. "Calculation of Constants in the Trebble-Bishnoi Equation of
State with an Extended Corresponding States Approach", Fluid Phase Equilibria, 45,
165-172.
33. Trebble, M.A. 1988. "Correlation of VLE Data for Binary Mixtures of 1-Alkanols
and Normal Hexane with the Trebble-Bishnoi Equation of State", Fluid Phase
Equilibria, 42, 117-128.
34. Trebble, M.A., and Bishnoi, P.R. 1988. "Extension of the Trebble-Bishnoi Equation
of State to Fluid Mixtures", Fluid Phase Equilibria, 40, 1-21.

8. 35. Trebble, M.A., and Bishnoi, P.R. 1988. "Thermodynamic Property Predictions with
the Trebble-Bishnoi Equation of State", Fluid Phase Equilibria, 39, 111-128.
36. Trebble, M.A., and Bishnoi, P.R. 1987. "Development of a New Four-Parameter
Cubic Equation of State", Fluid Phase Equilibria, 35, 1-18.
37. Trebble, M.A., and Bishnoi, P.R. 1986. "Accuracy and Consistency Comparisons of
Ten Cubic Equations of State for Polar and Non-Polar Compounds", Fluid Phase
Equilibria, 29, 465-474.
38. Trebble, M.A., 1983. "Correlation Estimates Ethane Plant's Carbon-Dioxide
Freezing Pressure", Oil and Gas Journal, Jan. 31, 152-157.
Conference Proceedings Since 2001
1. Laskowski, L.; Kandil, M.E.; May, E.F.; Trebble, M.A.; Trengove, R.D.; Trinter,
J.; Huang, S.; Marsh, K.N. , 2008, “Reliable Thermodynamic Data for Improving
LNG Scrub Column Design”, AIChE Spring Meeting: 8th Topical Conference on
Natural Gas Utilization, 6-10 April, New Orleans, LA, USA.
2. Laskowski, L.; Kandil, M.E.; May, E.F.; Trebble, M.A.; Trengove, R.D.; Trinter,
J.; Huang, S.; Marsh, K.N., 2008, “Reliable Thermodynamic Data for Improving
LNG Scrub Column Design”, AspenTech Americas User Conference, 7-11 April,
Houston, TX, USA.
3. May, E.F.; Laskowski, L.; Kandil, M.E.; Trebble, M.A.; Trengove, R.D.; Trinter,
J.; Huang, S.; Marsh, K.N., 2008, “Reliable Thermodynamic Data for Improving
LNG Scrub Column Design”, AspenTech Australia User Conference, 16 May,
Melbourne, Victoria, Australia.
4. Watson, G.C.Y.; May, E.F.; Graham, B.F.; Trebble, M.A.; Trengove, R.D., 2008,
“Adsorption of N2 and CH4 on a Carbon Molecular Sieve at Temperatures from
115 to 298 K and Pressures to 5 MPa”, 18th
European Conference on
Thermophysical Properties, 31 August – 4 September, Pau, France.
5. Trebble, M.A. and Jeffery, J., 2008, “Measurement and Modelling of Thermal
Transients in Coselle Based CNG Transport”, Presented at Chemeca, New Castle,
Australia.
6. Trebble, M.A., 2007, “Facility Design for Coselle Based CNG Transport”, Presented
at the 2007 Chemeca Conference, Melbourne, Australia.
7. Kedge, C.J. and Trebble, M.A., 2007, “Excess Free Energy Mixing Rules for the
BWR Equation of State”, Presented at the 11th
International Conference on
Properties and Fluid Phase Equilibria for Product and Process Design, May 20-25,
Crete, Greece.
8. Trebble, M.A., 2006. “"Plant Performance Test for the Deethanizer Overhead
Recycle (DOR) Process”, Presented at Chemeca, Auckland, NZ.
9. Kedge, C.J. and Trebble, M.A., 2005, Application of Excess Free Energy Mixing
Rules to a Modified BWR Equation of State”, 2nd
International Conference on
Applied Thermodynamics, Istanbul, Turkey.
10. Kalaga, A. and Trebble, M.A., 2004, “Diffusion of Tetracosane and Octacosane in
Supercritical Ethane”, 54th
Canadian Chemical Engineering Conference, Calgary,
Canada.

9. 11. Kedge, C.J. and Trebble, M.A., 2004, “Excess Free Energy Mixing Rules for a Non-
Cubic Equation of State”, 54th
Canadian Chemical Engineering Conference,
Calgary, Canada.
12. Kedge, C.J. and Trebble, M.A., 2003, “Application of Excess Gibbs Energy Mixing
Rules to a Non-Cubic Equation of State”, 4th
European Congress of Chemical
Engineering, Granada, Spain.
13. Kedge, C.J. and Trebble, M.A., 2002, “A Procedure for Generalizing Parameters of
a New Non-Cubic Equation of State”, 52nd
Canadian Engineering Conference,
Vancouver, Canada.
14. Yanicki, G. and Trebble, M.A., 2002, “An Experimental Investigation into the
Foaming Tendencies of MDEA Solutions”, 52nd
Canadian Chemical Engineering
Conference, Vancouver, Canada.
15. Kalaga, A. and Trebble, M.A., 2002, “Natural Convection Mass Transfer in
Supercritical Fluids”, 52nd
Canadian Chemical Engineering Conference, Vancouver,
Canada.
16. Trebble, M.A., 2002, “Deethanizer Overhead Recycle Process for Rejection of
Carbon Dioxide from Ethane Product Streams”, 52nd
Canadian Chemical
Engineering Conference, Vancouver, Canada.
17. Kedge, C.J. and Trebble, M.A., 2001, “An Empirical Near-Critical Correction for
Cubic and Non-Cubic Equations of State”, 9th
International Conference on
Properties and Phase Equilibria for Product and Process Design, Kuraskiki, Japan.
Professional Associations:
1983 - Present Registered Professional Engineer, Association of Professional
Engineers, Geologists and Geophysicists of Alberta (APEGGA).
Served on the Calgary District Meetings Committee from 1989 -
1991.
2007 - 2011 Australian Reader
1987 - 2004 Corresponding Member with the International Union of Pure and
Applied Chemistry, Subcommittee on Thermodynamic Data.
1991 - 1996 CSChE Calgary Chapter Executive, Organizing Committee for 1994
National Conference, Student Program Organizer - 1990 Conference.
1991 - 1994 Editorial board member for the Journal of Chemical and Engineering
Data