Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub


    The purpose of this study was to examine the hydrothermal (HT) treatment of three invasive aquatic plants (i.e., Lemna sp., Hydrilla sp., and Eichhornia sp.) with respect to the generation of semi-volatile hydrocarbon product mixtures and biomass volume reduction. Identical HT treatments yielded similar semi-volatile product mixtures for Hydrilla sp. and Eichhornia sp. versus a significantly different mixture for Lemna sp. Pre-treatment (i.e., control) extracts of the plant substrates showed no semi-volatile hydrocarbons. Post-HT treatment product mixtures were comprised of complex mixtures of compounds including branched and unbranched alkanes and alkenes as well as light aromatics including substituted benzenes and phenols. All three plant HT product mixtures were dominated by phenol, C1 alkyl phenols, and oxygenated cycloalkenes. Lemna sp. products showed much more diverse distributions of C2?C5 alkyl benzenes, alkyl indanes, and alkyl naphthalenes at higher relative levels. Other products from the Lemna sp. HT treatment included C2?C4 phenols, and alkyl indole and indanol compounds. Results of wet chemical analyses showed that a major difference between Lemna sp. and the other two plants was significantly higher extractives levels in the former. It was found that this fraction accounted for much of the complexity in HT product mixture of the Lemna sp. biomass. For all HT treatments the substrate mass was reduced by 95% or more.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Catallo, W. James; Shupe, Todd F.; Eberhardt, Thomas L. 2008. Hydrothermal processing of biomass from invasive aquatic plants. Biomass and Bioenergy Volume 32 Issue 2 pp. 140 ? 145 2008


    Aquatic weeds, Biomass, Eichhornia sp., Hydrothermal reaction systems, Lemna sp., Hydrilla sp

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page