Oil production from algal cells of Dunaliella tertiolecta by direct thermochemical liquefaction

Minowa, Tomoaki; Yokoyama, Shoko; Kishimoto, Michimasa; Okakura, Toru

doi:10.1016/0016-2361(95)80001-x

Cited by 459 publications

(237 citation statements)

References 10 publications

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“…Hydrothermal liquesfaction has been successfully carried out at both sub-and supercritical conditions (Minowa et al, 1995;Faeth et al, 2013) with water simultaneously acting as both reactant and catalyst. The process has many advantages over other conversion technologies e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of operating conditions on yield and quality of biocrude during hydrothermal liquefaction of halophytic microalga Tetraselmis sp.

Eboibi

Lewis

Ashman

et al. 2014

Bioresource Technology

124

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NOTICE: this is the author's version of a work that was accepted for publication in Bioresource Technology resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Bioresource Technology, 2014; 170: 20-29 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe biomass of halophytic microalga Tetraselemis sp. with 16%w/w solids was converted into biocrude by a hydrothermal liquefaction (HTL) process in a batch reactor at different temperatures (310, 330, 350 and 370 o C) and reaction times (5, 15, 30, 45 and 60min). The biocrude yield, elemental composition, energy density and severity parameter obtained at various reaction conditions were used to predict the optimum condition for maximum recovery of biocrude with improved quality. This study clearly indicated that the operating condition for obtaining maximum biocrude yield and ideal quality biocrude for refining were different. A maximum biocrude yield of ~65wt% ash free dry weight (AFDW) was obtained at 350 o C and 5min, with a severity parameter and energy density of 5.21 and ~35MJ/kg, respectively. The treatment with 45min reaction time recorded 2 ~62wt% (AFDW) yield of biocrude with and energy density of ~39MJ/kg and higher severity parameter of 7.53.

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Section: Introductionmentioning

confidence: 99%

Effect of operating conditions on yield and quality of biocrude during hydrothermal liquefaction of halophytic microalga Tetraselmis sp.

Eboibi

Lewis

Ashman

et al. 2014

Bioresource Technology

124

View full text Add to dashboard Cite

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“…It has been found that nitrogen recovered from the aqueous phase after gasification can be used as part of a medium to successfully grow microalgae (Minowa et al 1995). …”

Section: Gasification Of Microalgaementioning

confidence: 99%

“…Liquefaction is a low temperature high pressure process where biomass is converted into a stable liquid hydrocarbon fuel (bio-oil) upgrading (Minowa et al 1995;Sawayama et al 1999;Brown et al 2010). The ability of hydrothermal treatments to handle wet biomass make them some of the most interesting methods of producing biofuel from microalgae .…”

Section: Liquefaction and Hydrothermal Upgradingmentioning

confidence: 99%

“…The ability of hydrothermal treatments to handle wet biomass make them some of the most interesting methods of producing biofuel from microalgae . Dunaliella with a moisture content of over 78 % has been treated by hydrothermal upgrading (termed liquefaction by the authors) at a laboratory scale (20 g of wet microalgae) yielding 37 % oil, based on the dry organic weight of the microalgal biomass (Minowa et al 1995); but hydrothermal liquation of biomass with a moisture content above 90 % is believed to have an unfavourable energy balance (Vardon et al 2012). …”

Section: Liquefaction and Hydrothermal Upgradingmentioning

confidence: 99%

“…The energy needed to heat the wet microalgal biomass to operating temperature for liquefaction has been estimated at between 65-85 % of the total energy available in the bio-oil produced (Minowa et al 1995). A more recent estimate reported the energy required for hydrothermal liquefaction of microalgal biomass with a moisture content of 80 % as between 44-63 % of the bio-oil energy produced (Vardon et al 2012).…”

Section: Liquefaction and Hydrothermal Upgradingmentioning

confidence: 99%

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