Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery

Dong, T.; Van Wychen, S.; Nagle, N.; Pienkos, P. T.; Laurens, L. M. L.

doi:10.1016/j.algal.2016.06.004

Title: Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery

Abstract

One of the major challenges associated with algal biofuels production in a biorefinery-type setting is improving biomass utilization in its entirety, increasing the process energetic yields and providing economically viable and scalable co-product concepts. We focus on the impact of compositional characteristics of biomass on the susceptibility to pretreatment in order to maximize the valorization of algal biomass conversion for biofuels and bioproducts. The release of monomeric carbohydrates in the aqueous phase and extractability of the lipid fraction was measured based a response surface methodology to find significant explanatory variables and interaction terms. We studied the effect of harvest timing on the conversion yields, using three algal strains; Chlorella vulgaris and Scenedesmus acutus and Nannochloropsis granulata representing three different nutritional metabolic phases. Four cultivation conditions of high (≥ 90 gallon gasoline equivalent/ton biomass) value for a combined sugar- and lipid-based biofuels process were identified. These four conditions represent either mid or late stage harvest cultivation regimes. Lastly, the results indicate that acid pretreatment has potential to be applicable for a vast range of biomass samples to obtain high energy yields, but that the exact conditions and optima are dependent on the strain and likely the starting composition of the biomass.

Authors:

Dong, T.; Van Wychen, S.; Nagle, N.; Pienkos, P. T.;

Publication Date:: Thu Sep 01 00:00:00 EDT 2016

Research Org.:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Bioenergy Technologies Office

OSTI Identifier:: 1268445

Alternate Identifier(s):: OSTI ID: 1329992

Report Number(s):: NREL/JA-5100-67317
Journal ID: ISSN 2211-9264; S221192641630193X; PII: S221192641630193X

Grant/Contract Number:: AC36-08-GO28308; AC36-08GO28308

Resource Type:: Published Article

Journal Name:: Algal Research

Additional Journal Information:: Journal Name: Algal Research Journal Volume: 18 Journal Issue: C; Journal ID: ISSN 2211-9264

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; algae; biorefinery; biomass composition; lipids; carbohydrates; bioethanol; renewable diesel; process economics

Citation Formats


                    Dong, T., Van Wychen, S., Nagle, N., Pienkos, P. T., and Laurens, L. M. L. Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery.  United States: N. p., 2016. 
Web.  doi:10.1016/j.algal.2016.06.004.

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                    Dong, T., Van Wychen, S., Nagle, N., Pienkos, P. T., & Laurens, L. M. L. Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery.  United States.  https://doi.org/10.1016/j.algal.2016.06.004

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                    Dong, T., Van Wychen, S., Nagle, N., Pienkos, P. T., and Laurens, L. M. L. Thu .  
"Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery".  United States.  https://doi.org/10.1016/j.algal.2016.06.004.

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@article{osti_1268445,

  title        = {Impact of biochemical composition on susceptibility of algal biomass to acid-catalyzed pretreatment for sugar and lipid recovery},

  author       = {Dong, T. and Van Wychen, S. and Nagle, N. and Pienkos, P. T. and Laurens, L. M. L.},

  abstractNote = {One of the major challenges associated with algal biofuels production in a biorefinery-type setting is improving biomass utilization in its entirety, increasing the process energetic yields and providing economically viable and scalable co-product concepts. We focus on the impact of compositional characteristics of biomass on the susceptibility to pretreatment in order to maximize the valorization of algal biomass conversion for biofuels and bioproducts. The release of monomeric carbohydrates in the aqueous phase and extractability of the lipid fraction was measured based a response surface methodology to find significant explanatory variables and interaction terms. We studied the effect of harvest timing on the conversion yields, using three algal strains; Chlorella vulgaris and Scenedesmus acutus and Nannochloropsis granulata representing three different nutritional metabolic phases. Four cultivation conditions of high (≥ 90 gallon gasoline equivalent/ton biomass) value for a combined sugar- and lipid-based biofuels process were identified. These four conditions represent either mid or late stage harvest cultivation regimes. Lastly, the results indicate that acid pretreatment has potential to be applicable for a vast range of biomass samples to obtain high energy yields, but that the exact conditions and optima are dependent on the strain and likely the starting composition of the biomass.},

  doi          = {10.1016/j.algal.2016.06.004},

  journal      = {Algal Research},

  number       = C,

  volume       = 18,

  place        = {United States},

  year         = {Thu Sep 01 00:00:00 EDT 2016},

  month        = {Thu Sep 01 00:00:00 EDT 2016}

}

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