Characterization of aqueous phase from the hydrothermal liquefaction of Chlorella pyrenoidosa

Chao Gai; Yuanhui Zhang; Wan Ting Chen; Yan Zhou; Lance Schideman; Peng Zhang; Giovana Tommaso; Chih Ting Kuo; Yuping Dong

doi:10.1016/j.biortech.2014.10.118

Characterization of aqueous phase from the hydrothermal liquefaction of Chlorella pyrenoidosa

Chao Gai, Yuanhui Zhang, Wan Ting Chen, Yan Zhou, Lance Schideman, Peng Zhang, Giovana Tommaso, Chih Ting Kuo, Yuping Dong

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

Abstract

This study investigated the characteristics of aqueous phase from hydrothermal liquefaction of low-lipid microalgae Chlorella pyrenoidosa. The interactions of operating conditions, including reaction temperature, retention time and total solid ratio were evaluated by response surface methodology. The chemical oxygen demand, total nitrogen and total phosphorus were selected as indicators of the property of AP. Results indicated that total solid ratio was found to be the dominant factor affecting the nutrient recovery efficiencies of AP. Based on energy recovery, GC-MS indicated that the AP at two optimized operating conditions (280. °C, 60. min, 35. wt.% and 300. °C, 60. min, 25. wt.%) were observed to have a higher concentration of organic acids (10.35% and 8.34%) while the sample (260. °C, 30. min, 35. wt.%) was observed to have the highest concentration of N&O-heterocyclic compounds (36.16%).

Original language	English (US)
Pages (from-to)	328-335
Number of pages	8
Journal	Bioresource Technology
Volume	184
DOIs	https://doi.org/10.1016/j.biortech.2014.10.118
State	Published - May 1 2015

Keywords

Aqueous product
Hydrothermal liquefaction
Low-lipid algae
Nitrogen recovery
Nutrient

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Waste Management and Disposal

Online availability

10.1016/j.biortech.2014.10.118

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title = "Characterization of aqueous phase from the hydrothermal liquefaction of Chlorella pyrenoidosa",

abstract = "This study investigated the characteristics of aqueous phase from hydrothermal liquefaction of low-lipid microalgae Chlorella pyrenoidosa. The interactions of operating conditions, including reaction temperature, retention time and total solid ratio were evaluated by response surface methodology. The chemical oxygen demand, total nitrogen and total phosphorus were selected as indicators of the property of AP. Results indicated that total solid ratio was found to be the dominant factor affecting the nutrient recovery efficiencies of AP. Based on energy recovery, GC-MS indicated that the AP at two optimized operating conditions (280. °C, 60. min, 35. wt.% and 300. °C, 60. min, 25. wt.%) were observed to have a higher concentration of organic acids (10.35% and 8.34%) while the sample (260. °C, 30. min, 35. wt.%) was observed to have the highest concentration of N&O-heterocyclic compounds (36.16%).",

keywords = "Aqueous product, Hydrothermal liquefaction, Low-lipid algae, Nitrogen recovery, Nutrient",

author = "Chao Gai and Yuanhui Zhang and Chen, {Wan Ting} and Yan Zhou and Lance Schideman and Peng Zhang and Giovana Tommaso and Kuo, {Chih Ting} and Yuping Dong",

note = "Funding Information: Authors gratefully acknowledge the China Scholarship Council and National Science and technology support program ( 2011YQ120039 ) for a financial support to the first author. The Department of Agricultural and Biological Engineering at University of Illinois at Urbana-Champaign provided the experiment facilities and expenses for the research. Authors also thank the fellow graduate students and researchers in the Bioenvironmental Engineering Division at University of Illinois at Urbana-Champaign for their kind assistance during the project. Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd.",

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doi = "10.1016/j.biortech.2014.10.118",

language = "English (US)",

volume = "184",

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AU - Zhang, Yuanhui

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AU - Schideman, Lance

AU - Zhang, Peng

AU - Tommaso, Giovana

AU - Kuo, Chih Ting

AU - Dong, Yuping

N1 - Funding Information: Authors gratefully acknowledge the China Scholarship Council and National Science and technology support program ( 2011YQ120039 ) for a financial support to the first author. The Department of Agricultural and Biological Engineering at University of Illinois at Urbana-Champaign provided the experiment facilities and expenses for the research. Authors also thank the fellow graduate students and researchers in the Bioenvironmental Engineering Division at University of Illinois at Urbana-Champaign for their kind assistance during the project. Publisher Copyright: © 2014 Elsevier Ltd.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - This study investigated the characteristics of aqueous phase from hydrothermal liquefaction of low-lipid microalgae Chlorella pyrenoidosa. The interactions of operating conditions, including reaction temperature, retention time and total solid ratio were evaluated by response surface methodology. The chemical oxygen demand, total nitrogen and total phosphorus were selected as indicators of the property of AP. Results indicated that total solid ratio was found to be the dominant factor affecting the nutrient recovery efficiencies of AP. Based on energy recovery, GC-MS indicated that the AP at two optimized operating conditions (280. °C, 60. min, 35. wt.% and 300. °C, 60. min, 25. wt.%) were observed to have a higher concentration of organic acids (10.35% and 8.34%) while the sample (260. °C, 30. min, 35. wt.%) was observed to have the highest concentration of N&O-heterocyclic compounds (36.16%).

AB - This study investigated the characteristics of aqueous phase from hydrothermal liquefaction of low-lipid microalgae Chlorella pyrenoidosa. The interactions of operating conditions, including reaction temperature, retention time and total solid ratio were evaluated by response surface methodology. The chemical oxygen demand, total nitrogen and total phosphorus were selected as indicators of the property of AP. Results indicated that total solid ratio was found to be the dominant factor affecting the nutrient recovery efficiencies of AP. Based on energy recovery, GC-MS indicated that the AP at two optimized operating conditions (280. °C, 60. min, 35. wt.% and 300. °C, 60. min, 25. wt.%) were observed to have a higher concentration of organic acids (10.35% and 8.34%) while the sample (260. °C, 30. min, 35. wt.%) was observed to have the highest concentration of N&O-heterocyclic compounds (36.16%).

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KW - Nitrogen recovery

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Characterization of aqueous phase from the hydrothermal liquefaction of Chlorella pyrenoidosa

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Keywords

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