Journal ArticleDOI
Hydrothermal liquefaction and gasification of Nannochloropsis sp.
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TLDR
This article converted the marine microalga Nannochloropsis sp. into a crude bio-oil product and a gaseous product via hydrothermal processing from 200 to 500 °C and a batch holding time of 60 min.Abstract:
We converted the marine microalga Nannochloropsis sp. into a crude bio-oil product and a gaseous product via hydrothermal processing from 200 to 500 °C and a batch holding time of 60 min. A moderate temperature of 350 °C led to the highest bio-oil yield of 43 wt %. We estimate the heating value of the bio-oil to be about 39 MJ kg−1, which is comparable to that of a petroleum crude oil. The H/C and O/C ratios for the bio-oil decreased from 1.73 and 0.12, respectively, for the 200 °C product to 1.04 and 0.05, respectively, for the 500 °C product. Major bio-oil constituents include phenol and its alkylated derivatives, heterocyclic N-containing compounds, long-chain fatty acids, alkanes and alkenes, and derivatives of phytol and cholesterol. CO2 was always the most abundant gas product. H2 was the second most abundant gas at all temperatures other than 500 °C, where its yield was surpassed by that of CH4. The activation energies for gas formation suggest the presence of gas-forming reactions other than steam...read more
Citations
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Journal ArticleDOI
Potential yields and properties of oil from the hydrothermal liquefaction of microalgae with different biochemical content.
Patrick Biller,Andrew B. Ross +1 more
TL;DR: Broad agreement is reached between predictive yields and actual yields for the microalgae based on their biochemical composition, and the yields of bio-crude follow the trend lipids>proteins>carbohydrates.
Journal ArticleDOI
Microalgae biofuels: A critical review of issues, problems and the way forward
Man Kee Lam,Keat Teong Lee +1 more
TL;DR: The practical problems that are facing the microalgae biofuel industry will be depicted, covering upstream to downstream activities by accessing the latest research reports and critical data analysis and several interlink solutions to the problems will be suggested with the purpose to revolutionize the entire microAlgae Biofuel industry towards long-term sustainability.
Journal ArticleDOI
An overview of advances in biomass gasification
Vineet Singh Sikarwar,Ming Zhao,Ming Zhao,Peter T. Clough,Joseph G. Yao,Xia Zhong,Mohammad Zaki Memon,Nilay Shah,Edward J. Anthony,Paul S. Fennell +9 more
TL;DR: In this paper, an assessment on the fundamentals such as feedstock types, the impact of different operating parameters, tar formation and cracking, and modelling approaches for biomass gasification is presented.
Journal ArticleDOI
A review on hydrothermal liquefaction of biomass
TL;DR: In this paper, the authors briefly enlightened a few concepts of HTL such as the elemental composition of bio-crude obtained by HTL, different types of feedstock adopted for HTL processes, possible process flow diagrams of both wet and dry biomass and energy efficiency of the process.
Journal ArticleDOI
Hydrothermal liquefaction of biomass: Developments from batch to continuous process
TL;DR: This review describes the recent results in hydrothermal liquefaction (HTL) of biomass in continuous-flow processing systems, and process models have been developed, and mass and energy balances determined.
References
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Journal ArticleDOI
Use of U.S. Croplands for Biofuels Increases Greenhouse Gases Through Emissions from Land-Use Change
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Journal ArticleDOI
Microalgae for oil: strain selection, induction of lipid synthesis and outdoor mass cultivation in a low-cost photobioreactor.
Liliana Rodolfi,Graziella Chini Zittelli,Niccolò Bassi,Giulia Padovani,Natascia Biondi,Gimena Bonini,Mario R. Tredici +6 more
TL;DR: The experiments showed that the eustigmatophyte Nannochloropsis sp.
ReportDOI
Look Back at the U.S. Department of Energy's Aquatic Species Program: Biodiesel from Algae; Close-Out Report
TL;DR: The Aquatic Species Program (ASP) as mentioned in this paper was a relatively small research effort intended to look at the use of aquatic plants as sources of energy, with an emphasis on algae for biodiesel production.
Journal ArticleDOI
Microalgae as a raw material for biofuels production
TL;DR: The screening of microalgae (Chlorella vulgaris, Spirulinamaxima, Nannochloropsis sp., Neochloris oleabundans, Scenedesmus obliquus and Dunaliella tertiolecta) was done in order to choose the best one(s) in terms of quantity and quality as oil source for biofuel production.
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