skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Influence of process conditions and interventions on metals content in biocrude from hydrothermal liquefaction of microalgae

Abstract

We determined how different reaction conditions influence the metals contents in biocrude oil and other product fractions from hydrothermal liquefaction (HTL) of microalgae. We then assessed the effect of using different solvents for biocrude recovery and adding catalysts on the metal content in the biocrude. The Fe content was lower and the Na content higher in biocrude produced at higher temperature (400 vs 350 °C) and longer holding time (60 vs 3 min). The Fe and Na contents were reduced over 50% and 95%, respectively, by use of methyl tert-butyl ether (MTBE ) rather than dichloromethane as the organic solvent for biocrude recovery and they were reduced over 98% via additional application of a supported Ni catalyst during HTL. Finally, this work demonstrates that the hydrothermal treatment conditions influence the metal content in biocrude and that judicious selection of solvent and catalyst can lead to significant reduction in the metal content in biocrude.

Authors:
 [1];  [1]
  1. Pennsylvania State Univ., University Park, PA (United States). Dept of Chemical Engineering
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B)
OSTI Identifier:
1415271
Grant/Contract Number:
EE0006315
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Algal Research
Additional Journal Information:
Journal Volume: 26; Journal Issue: C; Journal ID: ISSN 2211-9264
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 42 ENGINEERING; Microalgae; Catalyst; Biocrude; Hydrothermal liquefaction; Metal; Demetallation

Citation Formats

Jiang, Jimeng, and Savage, Phillip E. Influence of process conditions and interventions on metals content in biocrude from hydrothermal liquefaction of microalgae. United States: N. p., 2017. Web. doi:10.1016/j.algal.2017.07.012.
Jiang, Jimeng, & Savage, Phillip E. Influence of process conditions and interventions on metals content in biocrude from hydrothermal liquefaction of microalgae. United States. doi:10.1016/j.algal.2017.07.012.
Jiang, Jimeng, and Savage, Phillip E. Sat . "Influence of process conditions and interventions on metals content in biocrude from hydrothermal liquefaction of microalgae". United States. doi:10.1016/j.algal.2017.07.012.
@article{osti_1415271,
title = {Influence of process conditions and interventions on metals content in biocrude from hydrothermal liquefaction of microalgae},
author = {Jiang, Jimeng and Savage, Phillip E.},
abstractNote = {We determined how different reaction conditions influence the metals contents in biocrude oil and other product fractions from hydrothermal liquefaction (HTL) of microalgae. We then assessed the effect of using different solvents for biocrude recovery and adding catalysts on the metal content in the biocrude. The Fe content was lower and the Na content higher in biocrude produced at higher temperature (400 vs 350 °C) and longer holding time (60 vs 3 min). The Fe and Na contents were reduced over 50% and 95%, respectively, by use of methyl tert-butyl ether (MTBE ) rather than dichloromethane as the organic solvent for biocrude recovery and they were reduced over 98% via additional application of a supported Ni catalyst during HTL. Finally, this work demonstrates that the hydrothermal treatment conditions influence the metal content in biocrude and that judicious selection of solvent and catalyst can lead to significant reduction in the metal content in biocrude.},
doi = {10.1016/j.algal.2017.07.012},
journal = {Algal Research},
number = C,
volume = 26,
place = {United States},
year = {Sat Jul 15 00:00:00 EDT 2017},
month = {Sat Jul 15 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 15, 2018
Publisher's Version of Record

Save / Share: