A general kinetic model for the hydrothermal liquefaction of microalgae

Peter J. Valdez; Vincent J. Tocco; Phillip E. Savage

doi:10.1016/j.biortech.2014.04.013

A general kinetic model for the hydrothermal liquefaction of microalgae

Peter J. Valdez
, Vincent J. Tocco
, Phillip E. Savage

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

221 Scopus citations

Abstract

We developed a general kinetic model for hydrothermal liquefaction (HTL) of microalgae. The model, which allows the protein, lipid, and carbohydrate fractions of the cell to react at different rates, successfully correlated experimental data for the hydrothermal liquefaction of Chlorella protothecoides, Scenedesmus sp., and Nannochloropsis sp. The model can faithfully account for the influence of time and temperature on the gravimetric yields of gas, solid, biocrude, and aqueous-phase products from isothermal HTL of a 15. wt% slurry. Examination of the rate constants shows that lipids and proteins are the major contributors to the biocrude, while other algal cell constituents contribute very little to the biocrude.

Original language	English (US)
Pages (from-to)	123-127
Number of pages	5
Journal	Bioresource technology
Volume	163
DOIs	https://doi.org/10.1016/j.biortech.2014.04.013
State	Published - Jul 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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10.1016/j.biortech.2014.04.013

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title = "A general kinetic model for the hydrothermal liquefaction of microalgae",

abstract = "We developed a general kinetic model for hydrothermal liquefaction (HTL) of microalgae. The model, which allows the protein, lipid, and carbohydrate fractions of the cell to react at different rates, successfully correlated experimental data for the hydrothermal liquefaction of Chlorella protothecoides, Scenedesmus sp., and Nannochloropsis sp. The model can faithfully account for the influence of time and temperature on the gravimetric yields of gas, solid, biocrude, and aqueous-phase products from isothermal HTL of a 15. wt\% slurry. Examination of the rate constants shows that lipids and proteins are the major contributors to the biocrude, while other algal cell constituents contribute very little to the biocrude.",

author = "Valdez, \{Peter J.\} and Tocco, \{Vincent J.\} and Savage, \{Phillip E.\}",

note = "Funding Information: The authors thank Sam Morton and the University of Kentucky for donating the samples of Scenedesmus sp. and Robert Levine for preparing the samples of Chlorella protothecoides . The authors also acknowledge financial support from the National Science Foundation (Grant EFRI-0937992 ), the Rackham Graduate School and the College of Engineering . This article was made possible by EPA fellowship number FP-917507. Its contents are solely the responsibility of the fellow and do not necessarily represent the official views of the EPA. Further, the EPA does not endorse the purchase of any commercial products or services mentioned in the publication.",

year = "2014",

month = jul,

doi = "10.1016/j.biortech.2014.04.013",

language = "English (US)",

volume = "163",

pages = "123--127",

journal = "Bioresource technology",

issn = "0960-8524",

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AU - Valdez, Peter J.

AU - Tocco, Vincent J.

AU - Savage, Phillip E.

N1 - Funding Information: The authors thank Sam Morton and the University of Kentucky for donating the samples of Scenedesmus sp. and Robert Levine for preparing the samples of Chlorella protothecoides . The authors also acknowledge financial support from the National Science Foundation (Grant EFRI-0937992 ), the Rackham Graduate School and the College of Engineering . This article was made possible by EPA fellowship number FP-917507. Its contents are solely the responsibility of the fellow and do not necessarily represent the official views of the EPA. Further, the EPA does not endorse the purchase of any commercial products or services mentioned in the publication.

PY - 2014/7

Y1 - 2014/7

N2 - We developed a general kinetic model for hydrothermal liquefaction (HTL) of microalgae. The model, which allows the protein, lipid, and carbohydrate fractions of the cell to react at different rates, successfully correlated experimental data for the hydrothermal liquefaction of Chlorella protothecoides, Scenedesmus sp., and Nannochloropsis sp. The model can faithfully account for the influence of time and temperature on the gravimetric yields of gas, solid, biocrude, and aqueous-phase products from isothermal HTL of a 15. wt% slurry. Examination of the rate constants shows that lipids and proteins are the major contributors to the biocrude, while other algal cell constituents contribute very little to the biocrude.

AB - We developed a general kinetic model for hydrothermal liquefaction (HTL) of microalgae. The model, which allows the protein, lipid, and carbohydrate fractions of the cell to react at different rates, successfully correlated experimental data for the hydrothermal liquefaction of Chlorella protothecoides, Scenedesmus sp., and Nannochloropsis sp. The model can faithfully account for the influence of time and temperature on the gravimetric yields of gas, solid, biocrude, and aqueous-phase products from isothermal HTL of a 15. wt% slurry. Examination of the rate constants shows that lipids and proteins are the major contributors to the biocrude, while other algal cell constituents contribute very little to the biocrude.

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JO - Bioresource technology

JF - Bioresource technology

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A general kinetic model for the hydrothermal liquefaction of microalgae

Abstract

UN SDGs

All Science Journal Classification (ASJC) codes

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