Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production

Yalin Li, Shijie Leow, Tao Dong, Nicholas J. Nagle, Eric P. Knoshaug, Lieve M.L. Laurens, Philip T. Pienkos, Jeremy S Guest, Timothy J. Strathmann

Research output: Contribution to journalArticle

Abstract

As an effort to develop affordable and sustainable energy sources, algae-derived biofuels have attracted considerable interest. As use of individual conversion processes targeting a subset of biochemical components (e.g., extraction and upgrading of lipids) has been shown to be economically unfeasible, there is a recognized need for integrated conversion systems that can valorize algal feedstocks with varying cell compositions. In this study, two hybrid systems (HBD-1, HBD-2) are proposed to enable more efficient conversion of all biomass components (lipids, proteins, carbohydrates) by leveraging two complementary systems: direct hydrothermal liquefaction (DHTL) and combined algal processing (CAP). Demonstrative experiments with Scenedesmus acutus show a 12.2-34.3% increase in fuel yields relative to individual systems (DHTL, CAP). Subsequent modeling efforts reveal substantial improvements stemming from CAP valorization of carbohydrates and lipids and DHTL valorization of proteins and CAP residuals. The maximum biomass-to-fuel conversion efficiencies for lipids/proteins/carbohydrate cell components are 79%/34%/75% (HBD-2), and techno-economic analysis suggests a 3.2-62.1% reduction in minimum fuel selling prices (MFSPs). The increased fuel yields and reduced MFSPs highlight the flexibility of the hybrid systems for biofuel production, revealing advantages of these systems for broader ranges of feedstocks, including ones not traditionally considered for fuel production.

Original languageEnglish (US)
Pages (from-to)5835-5844
Number of pages10
JournalACS Sustainable Chemistry and Engineering
Volume7
Issue number6
DOIs
StatePublished - Mar 18 2019

Fingerprint

Biofuels
biofuel
Demonstrations
Lipids
Liquefaction
Carbohydrates
lipid
liquefaction
carbohydrate
Processing
Proteins
Hybrid systems
Feedstocks
protein
Sales
Biomass
Economic analysis
biomass
Algae
economic analysis

Keywords

  • Algal biofuel
  • Combined algal processing (CAP)
  • Hydrothermal liquefaction (HTL)
  • Minimum fuel selling price (MFSP)
  • Techno-economic analysis (TEA)
  • Valorization

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Cite this

Li, Y., Leow, S., Dong, T., Nagle, N. J., Knoshaug, E. P., Laurens, L. M. L., ... Strathmann, T. J. (2019). Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production. ACS Sustainable Chemistry and Engineering, 7(6), 5835-5844. https://doi.org/10.1021/acssuschemeng.8b05741

Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production. / Li, Yalin; Leow, Shijie; Dong, Tao; Nagle, Nicholas J.; Knoshaug, Eric P.; Laurens, Lieve M.L.; Pienkos, Philip T.; Guest, Jeremy S; Strathmann, Timothy J.

In: ACS Sustainable Chemistry and Engineering, Vol. 7, No. 6, 18.03.2019, p. 5835-5844.

Research output: Contribution to journalArticle

Li, Y, Leow, S, Dong, T, Nagle, NJ, Knoshaug, EP, Laurens, LML, Pienkos, PT, Guest, JS & Strathmann, TJ 2019, 'Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production', ACS Sustainable Chemistry and Engineering, vol. 7, no. 6, pp. 5835-5844. https://doi.org/10.1021/acssuschemeng.8b05741
Li, Yalin ; Leow, Shijie ; Dong, Tao ; Nagle, Nicholas J. ; Knoshaug, Eric P. ; Laurens, Lieve M.L. ; Pienkos, Philip T. ; Guest, Jeremy S ; Strathmann, Timothy J. / Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production. In: ACS Sustainable Chemistry and Engineering. 2019 ; Vol. 7, No. 6. pp. 5835-5844.
@article{9461f6c6bcb14ad288a970a3de9c7117,
title = "Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production",
abstract = "As an effort to develop affordable and sustainable energy sources, algae-derived biofuels have attracted considerable interest. As use of individual conversion processes targeting a subset of biochemical components (e.g., extraction and upgrading of lipids) has been shown to be economically unfeasible, there is a recognized need for integrated conversion systems that can valorize algal feedstocks with varying cell compositions. In this study, two hybrid systems (HBD-1, HBD-2) are proposed to enable more efficient conversion of all biomass components (lipids, proteins, carbohydrates) by leveraging two complementary systems: direct hydrothermal liquefaction (DHTL) and combined algal processing (CAP). Demonstrative experiments with Scenedesmus acutus show a 12.2-34.3{\%} increase in fuel yields relative to individual systems (DHTL, CAP). Subsequent modeling efforts reveal substantial improvements stemming from CAP valorization of carbohydrates and lipids and DHTL valorization of proteins and CAP residuals. The maximum biomass-to-fuel conversion efficiencies for lipids/proteins/carbohydrate cell components are 79{\%}/34{\%}/75{\%} (HBD-2), and techno-economic analysis suggests a 3.2-62.1{\%} reduction in minimum fuel selling prices (MFSPs). The increased fuel yields and reduced MFSPs highlight the flexibility of the hybrid systems for biofuel production, revealing advantages of these systems for broader ranges of feedstocks, including ones not traditionally considered for fuel production.",
keywords = "Algal biofuel, Combined algal processing (CAP), Hydrothermal liquefaction (HTL), Minimum fuel selling price (MFSP), Techno-economic analysis (TEA), Valorization",
author = "Yalin Li and Shijie Leow and Tao Dong and Nagle, {Nicholas J.} and Knoshaug, {Eric P.} and Laurens, {Lieve M.L.} and Pienkos, {Philip T.} and Guest, {Jeremy S} and Strathmann, {Timothy J.}",
year = "2019",
month = "3",
day = "18",
doi = "10.1021/acssuschemeng.8b05741",
language = "English (US)",
volume = "7",
pages = "5835--5844",
journal = "ACS Sustainable Chemistry and Engineering",
issn = "2168-0485",
publisher = "American Chemical Society",
number = "6",

}

TY - JOUR

T1 - Demonstration and Evaluation of Hybrid Microalgae Aqueous Conversion Systems for Biofuel Production

AU - Li, Yalin

AU - Leow, Shijie

AU - Dong, Tao

AU - Nagle, Nicholas J.

AU - Knoshaug, Eric P.

AU - Laurens, Lieve M.L.

AU - Pienkos, Philip T.

AU - Guest, Jeremy S

AU - Strathmann, Timothy J.

PY - 2019/3/18

Y1 - 2019/3/18

N2 - As an effort to develop affordable and sustainable energy sources, algae-derived biofuels have attracted considerable interest. As use of individual conversion processes targeting a subset of biochemical components (e.g., extraction and upgrading of lipids) has been shown to be economically unfeasible, there is a recognized need for integrated conversion systems that can valorize algal feedstocks with varying cell compositions. In this study, two hybrid systems (HBD-1, HBD-2) are proposed to enable more efficient conversion of all biomass components (lipids, proteins, carbohydrates) by leveraging two complementary systems: direct hydrothermal liquefaction (DHTL) and combined algal processing (CAP). Demonstrative experiments with Scenedesmus acutus show a 12.2-34.3% increase in fuel yields relative to individual systems (DHTL, CAP). Subsequent modeling efforts reveal substantial improvements stemming from CAP valorization of carbohydrates and lipids and DHTL valorization of proteins and CAP residuals. The maximum biomass-to-fuel conversion efficiencies for lipids/proteins/carbohydrate cell components are 79%/34%/75% (HBD-2), and techno-economic analysis suggests a 3.2-62.1% reduction in minimum fuel selling prices (MFSPs). The increased fuel yields and reduced MFSPs highlight the flexibility of the hybrid systems for biofuel production, revealing advantages of these systems for broader ranges of feedstocks, including ones not traditionally considered for fuel production.

AB - As an effort to develop affordable and sustainable energy sources, algae-derived biofuels have attracted considerable interest. As use of individual conversion processes targeting a subset of biochemical components (e.g., extraction and upgrading of lipids) has been shown to be economically unfeasible, there is a recognized need for integrated conversion systems that can valorize algal feedstocks with varying cell compositions. In this study, two hybrid systems (HBD-1, HBD-2) are proposed to enable more efficient conversion of all biomass components (lipids, proteins, carbohydrates) by leveraging two complementary systems: direct hydrothermal liquefaction (DHTL) and combined algal processing (CAP). Demonstrative experiments with Scenedesmus acutus show a 12.2-34.3% increase in fuel yields relative to individual systems (DHTL, CAP). Subsequent modeling efforts reveal substantial improvements stemming from CAP valorization of carbohydrates and lipids and DHTL valorization of proteins and CAP residuals. The maximum biomass-to-fuel conversion efficiencies for lipids/proteins/carbohydrate cell components are 79%/34%/75% (HBD-2), and techno-economic analysis suggests a 3.2-62.1% reduction in minimum fuel selling prices (MFSPs). The increased fuel yields and reduced MFSPs highlight the flexibility of the hybrid systems for biofuel production, revealing advantages of these systems for broader ranges of feedstocks, including ones not traditionally considered for fuel production.

KW - Algal biofuel

KW - Combined algal processing (CAP)

KW - Hydrothermal liquefaction (HTL)

KW - Minimum fuel selling price (MFSP)

KW - Techno-economic analysis (TEA)

KW - Valorization

UR - http://www.scopus.com/inward/record.url?scp=85062440169&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062440169&partnerID=8YFLogxK

U2 - 10.1021/acssuschemeng.8b05741

DO - 10.1021/acssuschemeng.8b05741

M3 - Article

AN - SCOPUS:85062440169

VL - 7

SP - 5835

EP - 5844

JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

SN - 2168-0485

IS - 6

ER -