Optimization of integrated cultivation and aqueous conversion processes through pseudo-mechanistic modeling for variable biochemical compositions

Moses (Shijie) Leow

Algae Biomass Summit25th October 2016

Brian D. Shoenera; Yalin Li

b; Jennifer L. DeBellis

a;

Ryan Davisc; Lieve M. L. Laurens

c; Nicholas J. Nagle

c;

Philip T. Pienkosc; Sherri M. Cook

d;

Timothy J. Strathmannb,c

; Jeremy S. Guesta

A B C D

Co-author acknowledgements

2

Dr. Timothy J. Strathmann

Dr. Jeremy S. Guest

Ryan Davis Dr. Lieve Laurens Dr. Philip T. Pienkos

Yalin Li

2

Brian D. Shoener; Jennifer L. DeBellis

Nicholas J. Nagle Dr. Sherri M. Cook

Motivations and approach

MBSP ($/ton afdw) and MFSP ($/GGE) due to varying compositions and conversion pathways

Pair with aqueous conversion pathways

Biomass composition and varying downstream aqueous conversion pathways

Microalgae biomass composition (i.e., lipids, proteins, carbohydrates) has a significant impact on downstream conversion biofuel yields

Figures adapted from Leow S, et al. (2015) Prediction of microalgae hydrothermal liquefaction products from feedstock biochemical composition. Green Chem 17(6):3584–3599.

Tailoring biomass composition through cultivation and optimizing the pairing of downstream aqueous conversion pathways

Figure adapted from Leow S, et al. (2015) Prediction of microalgae hydrothermal liquefaction products from feedstock biochemical composition. Green Chem 17(6):3584–3599.

Previous techno-economic assessment efforts through the synthesis of cultivation, conversion, and plant-scale process simulation models

Figure from Jones S, et al. (2014) Process Design and Economics for the Conversion of Algal Biomass to Hydrocarbons: Whole Algae Hydrothermal Liquefaction and Upgrading (Pacific Northwest National Laboratory, Richland, WA)

Guest JS, et al. (2013) Lumped Pathway Metabolic Model of Organic Carbon Accumulation and Mobilization by the Alga Chlamydomonas reinhardtii. Environ Sci Technol47(7):3258–3267.Laurens LML, et al. (2014) Strain, biochemistry, and cultivation-dependent measurement variability of algal biomass composition. Analytical Biochemistry 452:86–95.Davis R, et al. (2016) Process Design and Economics for the Production of Algal Biomass: Algal Biomass Production in Open Pond (National Renewable Energy Laboratory, Golden, CO) Available at: http://www.nrel.gov/docs/fy16osti/64772.pdf.

Modeling for biomass selling price of variable biochemical compositions

Minimum biomass selling price (2011$ / ton afdw)

9

Biomass cost in integrated plant-scale process analysis for minimum fuel selling price

10

Microalgae biofuel systems with varied biomass composition and conversion pathways

Motivations and approach

MBSP ($/ton afdw) and MFSP ($/GGE) due to varying compositions and conversion pathways

Pair with aqueous conversion pathways

Biomass composition and varying downstream aqueous conversion pathways