Process Engineer

DAE-YEOL CHEONG

**** **** ****** ***

Littleton, CO 80123

(303) 594(5571

********@*****.***

QUALIFICATIONS

Ph.D. in Biological Engineering, 2005

Utah State University, Logan, Utah

M.S. in Biotechnology, 1994

Korea University, Seoul, Korea

B.S. in Food and Biotechnology, 1992

Korea University, Seoul, Korea

PROFESSIONAL EXPERIENCE

Senior Bioprocess Engineer and Team Leader of Biomass Processing

Technologies R&D, October 2011-April 2015

GeoSynFuels, LLC. Golden, Colo.

- Headed process development for pre-treatment and detoxification to

improve ethanol fermentation efficiency of cellulosic biomass

- Established separation/filtration and ion/non-ion exchange

chromatography technologies for conditioning, separation, and

purification of pre-fermentation product in a pilot plant to produce

bioethanol and value-added biochemical

Senior Bioprocess Engineer, October 2007-September 2011

GeoSynFuels, LLC. Golden, Colo.

- Established immobilization/encapsulation technology of microbes for

efficient bioconversion process from cellulosic biomass, organic

wastes, and toxic wastewaters

- Initiated development of bioconversion strategy for production of

value-added biochemicals from cellulosic biomass and waste oil

- Headed technology development for production of gaseous fuels from

agricultural wastewaters and biomass processing wastes using

anaerobic bioreactors system

- Developed bioprocess platform in an integrated demonstration plant

for production of fuel ethanol and treatment of lignocellulosic

feedstocks

Research Associate, July 2006(October 2007

Center for Bioproducts and Bioenergy, Washington State University, Pullman,

Wash.

- Responsible for biomass immobilization and hydrolysis in

development of anaerobic conversion process for bioenergy production

- Worked on a research project for "producing energy and fertilizer

from organic municipal solid wastes and wastewaters"

- Investigated production of fuel ethanol by novel anaerobic

fermentation process

- Studied on iron bacterial assemblage produces bioproduct and

biopolymer

- Trained graduate students in fermentation techniques of anaerobes

Project Director, June 2005-June 2006

Hansen Energy and Environmental, LLC. East Garland, Utah

- Directed a research project for "cost effective and reliable

anaerobic digestion of agricultural byproducts and industrial

wastewaters"

- Modified existing pilot-scale bioreactor systems at the Caine Dairy

Center of Utah State University and designed control systems

- Initiated research for conversion of biodiesel processing wastes

and by-products to gaseous fuel

- Studied strategies of anaerobic fermentation for

sequential/simultaneous production of bioenergy from agricultural

and food processing wastes

Graduate Research Assistant, August 2000(May 2005

Department of Biological Engineering, Utah State University, Logan, Utah

- Studied the feasibility of converting organic wastewaters into

hydrogen as a fuel resource through anaerobic digestion

- Investigated effects of operating parameters and determined an

optimal point for hydrogen production in batch, fed-batch and

continuous-flow anaerobic systems

- Developed an efficient and stable operational strategy for an

anaerobic sequencing batch reactor to overcome inhibitory potential

when anaerobically treating high-strength organic wastewaters to

produce methane

- Studied economical production, separation, and recovery of

cellulose enzyme for hydrolysis of fibrous materials

Associate in Research, June 1999(April 2000

Institute of Biotechnology, Korea University, Seoul, Korea

- Designed operating systems, analyzed results, and co-authored the

final report for "a study of optimization of bioflocculant

production conditions using chitosans isolated from Portunus

trituberclatus and Aspergillus niger mycelium"

Senior Researcher and Team Associate Chief, May 1997(May 1999

Food Materials Development Team, Food R&D Division, Research Center, Ottogi

Corporation, Anyang, Korea

- Responsible for the development of value-added commercial materials

from food processing residues and byproducts

- Accomplished the regeneration of food-grade functional calcium from

wasted egg shells and developed DHA compounds from residues of

canned tuna processing

- Developed isolation/separation processes to produce lysozyme

commercially from chicken egg white

- Designed a new process for aseptic packaging in manufacturing plant

and established controlled processes for extension of shelf-life

- Organized HACCP plan, ISO 9000 quality systems, and stock-recovery

plan and applied them in real projects

Researcher, January 1994(April 1997

Retort and Canned Food Development Team, Food R&D Division, Research

Center, Ottogi Corporation, Anyang, Korea

- Developed four new products, marketed and sold them, and obtained

one patent

- Designed thermal manufacturing processes and determined lethality

requirements

- Monitored and evaluated microbial population of raw materials and

microbial contaminants in processing line of canneries

- Worked on reorganization of "Clean in Place" cleaning system in

retort food manufacturing plant

Graduate Research Assistant, March 1992(December 1993

School of Life Sciences and Biotechnology, Korea University, Seoul, Korea

- Developed a 5-aminolevulinic acid (ALA)-producing photosynthetic

bacterium, Rhodobacter capsulatus, from nature and investigated

optimum culture conditions for enhancing ALA synthetase activity

- Worked on a research project for "industrial wastewaters treatment

and bioproduct production by photosynthetic bacteria"

Undergraduate Research Assistant, March 1991(February 1992

Department of Food and Biotechnology, Korea University, Seoul, Korea

- Worked on a research project for ethanol production using a new

method of biomass immobilization

TEACHING EXPERIENCE

Teaching Assistant, August 2002(December 2004

Department of Biological Engineering, Utah State University, Logan, Utah

- Taught laboratory sections in introductory and advanced bioprocess

engineering

Teaching Assistant, August 1992(December 1993

School of Life Sciences and Biotechnology, Korea University, Seoul, Korea

- Taught laboratory sections in general microbiology, fermentation

technology, and biochemistry

PROJECT MANAGEMENT

Principal Investigator, 2005. Cost Effective and Reliable Anaerobic

Digestion for Agricultural Byproducts. Small Business Grant (Proj. No: UTAK-

2005-00508), CSREES-USDA

CONSUTANTSHIP

Hansen Energy and Environmental, LLC, East Garland, Utah. June, 2007.

Served as a Consultant on USDA SBIR Project for "Production of Hydrogen

from Agricultural Waste"

US PATENTS

Co-inventor on US Patent (US 8, 246, 828). Method for Selectively Producing

Hydrogen and Methane from Biomass Feedstocks Using an Anaerobic Biological

System. Date of Patent: August 21, 2012

Co-inventor on US Patent (US 7, 540, 961 B2). Methods for Manufacturing

Hydrogen Using Anaerobic Digestion. Date of Patent: June 2, 2009

SELECTED PUBLICATIONS

Peer-Reviewed Articles

Cheong, D.-Y., and C. L. Hansen. 2008. Effect of feeding strategy on the

stability of anaerobic sequencing batch reactor responses to organic

loading conditions. Bioresource Technology. 99 (11): 5058-5068.

Cheong, D.-Y., and C. L. Hansen. 2007. Feasibility of hydrogen production

in thermophilic mixed fermentation by natural anaerobes. Bioresource

Technology. 98 (11): 2229(2239.

Cheong, D.-Y., C. L. Hansen, and D. K. Stevens. 2007. Production of bio-

hydrogen by mesophilic anaerobic fermentation in an acid-phase

sequencing batch reactor. Biotechnology and Bioengineering. 96 (3):

421-432

Cheong, D.-Y., and C. L. Hansen. 2006. Acidogenesis characteristics of

natural, mixed anaerobes converting carbohydrate-rich synthetic

wastewater to hydrogen. Process Biochemistry. 41: 1736(1745.

Cheong, D.-Y., and C. L. Hansen. 2006. Bacterial stress enrichment enhances

anaerobic hydrogen production in cattle manure sludge. Applied

Microbiology and Biotechnology. 72(4): 635(643.

Cheong, D.-Y., and C. L. Hansen. 2006. Feasibility of hydrogen production

from anaerobic mixed fermentation. Transactions of the ASABE. 49(2):

467(476.

Book Chapters

Hansen, C. L., and D.-Y. Cheong. 2007. Fermentation, biogas and biohydrogen

production from solid food processing. In Waste Management and Co-

Product Recovery in Food Processing. Abington Cambridge, UK: Woodhead

Publishing.

Hansen, C. L., and D.-Y. Cheong. 2007. Agricultural waste management in

food processing. In Handbook of Farm, Dairy, and Food Machinery.

Norwich, N.Y.: William Andrew Publishing.

LANGUAGE SKILLS

Mother tongue: Korean

Excellent English Communication Skills

Can speak and read Japanese

TECHNICAL SKILLS

Biochemical Process:

Bioreactor design and control; heat exchanger/heat transfer; thermal/non-

thermal process unit operation; sensor/automation;

adsorption/extraction/filtration/separation; gas cleaning/conditioning

Microbiological:

Tools for isolation and identification of bacteria and fungi;

mutagenesis; immobilization/encapsulation; thermal resistance estimation

of bacteria by experimental and mathematical methods; auto image

analysis; microbial community analysis

Analytical:

HPLC; GC-MS

COMPUTER SKILLS

Microsoft Office Suite: Excel, PowerPoint, Word

Statistical tools: MINITAB, SAS, SigmaPlot, SYSTAT, S-Plus, Prizm

Numerical Analysis tools: Maple, SCILAB

Web Design tools: HTML, Photoshop

AWARDS

Outstanding Performance Award, GeoSynFuels, 2008

American Society of Agricultural and Biological Engineers "Superior"

Paper Award,

2007.

Phi Kappa Phi, Utah State University Chapter, 2004

Utah State University Travel Scholarship, 2003, 2004

E. Z. and Inez Waldron Biotech. Endowment Fund and Scholarship, Utah

State University, 2002, 2003

The Best Researcher of the Year Award, Ottogi Corporation, Korea 1996

C. K. Lee Fellowship, Funded by Chongkundang Pharm. Corportation,

Korea, 1992(1993

Merit-Based Academic Scholarship, Korea University, Korea, 1989(1991

Professional References

Dr. Conly L. Hansen

Distinguished Professor, Departments of Biological Engineering and

Nutrition & Food Sciences, 8700 Old Main Hill

Utah State University

Logan, UT 84322

(435) 797(2188

*****.******@***.***

Dr. Greg J. Olson

Vice President Research and Development, GeoSynFuels, LLC

14818 West 6th Avenue, Unit A1

Golden, CO 80401

(928) 642(0263

**.*****@*******.***

Dr. J. Todd Harvey

President and CEO, GeoSynFuels, LLC

14818 West 6th Avenue, Unit A1

Golden, CO 80401

(720)320(7674

***@***********.***

Dr. Thomas R. Clark

Director, Owner

Solfatara Laboratories LLC

5916 McIntyre Street

Golden, CO 80403

(518)361(8817

***.*****@*************.***

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