Ashe Juniper is one of three major species of juniper native to Texas. Communities of Ashe Juniper occupy over 8 million acres of Texas rangelands and are responsible for herbage reduction, which adversely impacts the livestock carrying capacity. Ashe Juniper wood contains aromatic liquids called essential oils, which are economically beneficial for the personal care products industry. In order to exploit this benefit Texarome, Inc. of Leaky, Texas uses a large-scale steam distillation process to extract aromatic liquids from Ashe Juniper. This process results in a large quantity of Ashe Juniper woodchip waste for which there is few uses. A moderate temperature process known as fast pyrolysis was used to convert steam-distillated Ashe Juniper into a liquid known as bio-oil. An average liquid yield of 40.8% is reported for steam-distillated Ashe Juniper biomass and an average liquid yield of 47.3% is reported Ashe Juniper biomass that has not undergone the steam distillation process. This work demonstrates that the energy content of steam distillated Ashe Juniper can be extracted and the conversion to bio-oil is another potential use for Ashe Juniper woodchip waste. An economic model of Ashe Juniper biomass developed previously by Jua´rez and Daugaard was used to examine the economic impact of steam-distilled Ashe Juniper by simulating a 4,046-hectare (10,000 acre) Ashe Juniper energy plantation. It was found that bio-oil could be produced for as little as $5.20/GJ on a lower heating value basis if re-investment of profits made from the sale of essential oils extracted during the steam distillation process was assumed. Bio-oil from un-distillated Ashe Juniper could be produced for $13.21/GJ.
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ASME 2006 Power Conference
May 2–4, 2006
Atlanta, Georgia, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-4205-3
PROCEEDINGS PAPER
Fast Pyrolysis of Distillated Ashe Juniper Biomass
Jaime J. Jua´rez,
Jaime J. Jua´rez
The University of Texas at San Antonio, San Antonio, TX
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Victor R. Contreras,
Victor R. Contreras
The University of Texas at San Antonio, San Antonio, TX
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Gaston R. Haupert,
Gaston R. Haupert
The University of Texas at San Antonio, San Antonio, TX
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Steven Hill,
Steven Hill
The University of Texas at San Antonio, San Antonio, TX
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Daren E. Daugaard
Daren E. Daugaard
The University of Texas at San Antonio, San Antonio, TX
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Jaime J. Jua´rez
The University of Texas at San Antonio, San Antonio, TX
Victor R. Contreras
The University of Texas at San Antonio, San Antonio, TX
Gaston R. Haupert
The University of Texas at San Antonio, San Antonio, TX
Steven Hill
The University of Texas at San Antonio, San Antonio, TX
Daren E. Daugaard
The University of Texas at San Antonio, San Antonio, TX
Paper No:
POWER2006-88022, pp. 585-590; 6 pages
Published Online:
October 7, 2008
Citation
Jua´rez, JJ, Contreras, VR, Haupert, GR, Hill, S, & Daugaard, DE. "Fast Pyrolysis of Distillated Ashe Juniper Biomass." Proceedings of the ASME 2006 Power Conference. ASME 2006 Power Conference. Atlanta, Georgia, USA. May 2–4, 2006. pp. 585-590. ASME. https://doi.org/10.1115/POWER2006-88022
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