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Title: Demonstration of Parallel Algal Processing: Production of Renewable Diesel Blendstock and a High-Value Chemical Intermediate

Abstract

Co-production of high-value chemicals such as succinic acid from algal sugars is a promising route to enabling conversion of algal lipids to a renewable diesel blendstock. Biomass from the green alga Scenedesmus acutus was acid pretreated and the resulting slurry separated into its solid and liquor components using charged polyamide induced flocculation and vacuum filtration. Over the course of a subsequent 756 hours continuous fermentation of the algal liquor with Actinobacillus succinogenes 130Z, we achieved maximum productivity, process conversion yield, and titer of 1.1 g L-1 h-1, 0.7 g g-1 total sugars, and 30.5 g L-1 respectively. Succinic acid was recovered from fermentation media with a yield of 60% at 98.4% purity while lipids were recovered from the flocculated cake at 83% yield with subsequent conversion through deoxygenation and hydroisomerization to a renewable diesel blendstock. This work is a first-of-its-kind demonstration of a novel integrated conversion process for algal biomass to produce fuel and chemical products of sufficient quality to be blend-ready feedstocks for further processing.

Authors:
ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1];  [1];  [1]
  1. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1416715
Report Number(s):
NREL/JA-5100-70765
Journal ID: ISSN 1463-9262; GRCHFJ
DOE Contract Number:
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Green Chemistry; Journal Volume: 20; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; integrated conversion porcess; algal biomass; feedstocks

Citation Formats

Knoshaug, Eric P, Mohagheghi, Ali, Nagle, Nicholas J, Stickel, Jonathan J, Dong, Tao, Karp, Eric M, Kruger, Jacob S, Brandner, David, Manker, Lorenz, Rorrer, Nicholas, Hyman, Deborah A, Christensen, Earl D, and Pienkos, Philip T. Demonstration of Parallel Algal Processing: Production of Renewable Diesel Blendstock and a High-Value Chemical Intermediate. United States: N. p., 2017. Web. doi:10.1039/C7GC02295F.
Knoshaug, Eric P, Mohagheghi, Ali, Nagle, Nicholas J, Stickel, Jonathan J, Dong, Tao, Karp, Eric M, Kruger, Jacob S, Brandner, David, Manker, Lorenz, Rorrer, Nicholas, Hyman, Deborah A, Christensen, Earl D, & Pienkos, Philip T. Demonstration of Parallel Algal Processing: Production of Renewable Diesel Blendstock and a High-Value Chemical Intermediate. United States. doi:10.1039/C7GC02295F.
Knoshaug, Eric P, Mohagheghi, Ali, Nagle, Nicholas J, Stickel, Jonathan J, Dong, Tao, Karp, Eric M, Kruger, Jacob S, Brandner, David, Manker, Lorenz, Rorrer, Nicholas, Hyman, Deborah A, Christensen, Earl D, and Pienkos, Philip T. Tue . "Demonstration of Parallel Algal Processing: Production of Renewable Diesel Blendstock and a High-Value Chemical Intermediate". United States. doi:10.1039/C7GC02295F.
@article{osti_1416715,
title = {Demonstration of Parallel Algal Processing: Production of Renewable Diesel Blendstock and a High-Value Chemical Intermediate},
author = {Knoshaug, Eric P and Mohagheghi, Ali and Nagle, Nicholas J and Stickel, Jonathan J and Dong, Tao and Karp, Eric M and Kruger, Jacob S and Brandner, David and Manker, Lorenz and Rorrer, Nicholas and Hyman, Deborah A and Christensen, Earl D and Pienkos, Philip T},
abstractNote = {Co-production of high-value chemicals such as succinic acid from algal sugars is a promising route to enabling conversion of algal lipids to a renewable diesel blendstock. Biomass from the green alga Scenedesmus acutus was acid pretreated and the resulting slurry separated into its solid and liquor components using charged polyamide induced flocculation and vacuum filtration. Over the course of a subsequent 756 hours continuous fermentation of the algal liquor with Actinobacillus succinogenes 130Z, we achieved maximum productivity, process conversion yield, and titer of 1.1 g L-1 h-1, 0.7 g g-1 total sugars, and 30.5 g L-1 respectively. Succinic acid was recovered from fermentation media with a yield of 60% at 98.4% purity while lipids were recovered from the flocculated cake at 83% yield with subsequent conversion through deoxygenation and hydroisomerization to a renewable diesel blendstock. This work is a first-of-its-kind demonstration of a novel integrated conversion process for algal biomass to produce fuel and chemical products of sufficient quality to be blend-ready feedstocks for further processing.},
doi = {10.1039/C7GC02295F},
journal = {Green Chemistry},
number = 2,
volume = 20,
place = {United States},
year = {Tue Dec 19 00:00:00 EST 2017},
month = {Tue Dec 19 00:00:00 EST 2017}
}