Overview
Personal Profile
Research Interests
Production of premium fuels and chemicals from biomass components
Hydrodeoxygenation of biomass-derived components
High-performance size exclusion chromatography of biomass-derived components
Electrochemistry
Biomass composition and analysis
Biomass pretreatment
Biomass pyrolysis oil fractionation and analysis
Lignin chemistry
High-temperature and pressure lignin hydrotreating
Catalytic hydrodeoxygenation
Sugar and furan chemistries
Supercritical fluid extraction of biomass components
High-performance liquid and size exclusion chromatographies
Professional Experience
Scientist V, Manager, NLR (2013–present)
Senior Scientist II, NLR (1998–2013)
Acting Branch Manager, NLR (1992–1993)
Senior Chemist, NLR (1989–1998)
Staff Electrochemical Engineer, NLR (1984–1989)
Postdoctoral Fellow, Solar Energy Research Institute (1982–1984)
Postdoctoral Fellow, University of California, Los Angeles (1980–1982)
Education/Academic Qualification
PhD, Electrochemical Engineering, University of Southampton
Bachelor, Chemistry, University of Southampton
Fingerprint
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Collaborations and Top Research Areas From the Past 5 Years
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Advancing Sustainable Aviation Fuel with High-Energy-Density Bicycloalkanes Production from Corn Stover Mixed Sugars: Article No. 102692
Kumar, A., Katahira, R., Yang, Z., Bayles, A., Kumar, A., Ruddy, D., Bell, D., Heyne, J., Johnson, D. & Mittal, A., 2025, In: Cell Reports Physical Science. 6, 7, 11 p.Research output: Contribution to journal › Article › peer-review
1 Scopus Citations -
Catalytic Conversion of Paper Sludge Carbohydrates to Jet Fuel Range Hydrocarbons: Process Optimization and Techno-Economic Analysis: Article No. 160622
Cruz, D., Park, H., Tiller, P., Kumar, A., Gonzalez, R., Mittal, A., Johnson, D. & Park, S., 2025, In: Chemical Engineering Journal. 507, 14 p.Research output: Contribution to journal › Article › peer-review
5 Scopus Citations -
Synthesis of 5-Hydroxymethylfurfural and Furfural in 1,4-Dioxane Versus Acetone: Comparing Reaction Performance and Solvent Recyclability Parameters: Article No. 116069
Cruz, D., Park, H., Tiller, P., Gonzalez, R., Mittal, A., Johnson, D. & Park, S., 2025, In: Journal of Environmental Chemical Engineering. 13, 2, 10 p.Research output: Contribution to journal › Article › peer-review
1 Scopus Citations -
Life-Cycle Assessment of Sustainable Aviation Fuel Derived from Paper Sludge
Lan, K., Cruz, D., Li, J., Agyei Boakye, A. A., Park, H., Tiller, P., Mittal, A., Johnson, D., Park, S. & Yao, Y., 2024, In: ACS Sustainable Chemistry and Engineering. 12, 22, p. 8379-8390 12 p.Research output: Contribution to journal › Article › peer-review
20 Scopus Citations -
Techno-Economic Analysis of Biomass Value-Added Processing Informed by Pilot Scale De-Ashing of Paper Sludge Feedstock: Article No. 130744
Tiller, P., Park, H., Cruz, D., Carrejo, E., Johnson, D., Mittal, A., Venditti, R. & Park, S., 2024, In: Bioresource Technology. 401, 7 p.Research output: Contribution to journal › Article › peer-review
4 Scopus Citations
Activities
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American Chemical Society (External organization)
Ginley, D. (Member), Ware, L. (Member), Allen, B. (Fellow), Rumbles, G. (Member), Perkins, C. (Member), Johnson, D. (Member), Ferrell, J. (Member), Arellano Trevino, M. (Member), Neale, N. (Member), Bell, R. (Member), Klein, R. (Member), Aubry, T. (Member), Bharadwaj, V. (Member), Wieliczka, B. (Member), Hermosilla Palacios, A. (Member), Puente-Urbina, A. (Member), Maughan, A. (Member), Wiley, S. (Member), Kluherz, T. (Member), Kurtz, S. (Member), Schichtl, Z. (Member), Dong, Y. (Member), Thodika, M. (Member), Carvalho, Q. (Member), Truong, T. (Member), Clarke, R. (Member), Kiani, D. (Member), Lee, M. (Member), McGeehan, J. (Member), Brady, N. (Member), Yang, B. (Member), Nozik, A. (Member), Pennell, S. (Member), Wu, I. (Member), Lany, S. (Member) & Myers, A. (Member)
0001Activity: Membership › Membership of network
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American Institute of Chemical Engineers (AIChE) (External organization)
Klein, B. (Member), Dupuis, D. (Member), Johnson, D. (Member), Yadav, G. (Member), Ferrell, J. (Member), Jorgenson, J. (Member), Hassanaly, M. (Member), Pomeroy, M. (Member), Ruth, M. (Member), Guerra Fernandez, O. J. (Member), Hanes, R. (Member), Ghosh, T. (Member), Bharadwaj, V. (Member), Chen, Y. (Member), Ghoshal, D. (Member), Puente-Urbina, A. (Member), Young, A. (Member), Hill, A. (Member), Deshpande, A. (Member), Jeong-Potter, C. (Member), Chen, X. (Member), Khalifa, S. (Member), Carvalho, Q. (Member), Kiani, D. (Member), Appleby, B. (Member), Moon, H. (Member), Baker, M. (Member), Gamil, A. (Member) & Kocher, J. (Member)
0001Activity: Membership › Membership of network
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Biotechnology for Biofuels (Journal)
Himmel, M. (Editor in chief) & Johnson, D. (Member of editorial board)
0001Activity: Publication peer-review and editorial work › Editorial work