Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio‐oil

Liang, Shaobo; Wei, Liqing; Passero, Maxine; Feris, Kevin P.; McDonald, Armando G.

doi:10.1002/ep.12629

Cited by 9 publications

(6 citation statements)

References 32 publications

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“…A detailed overview of these compounds as a function of the process temperature was presented in Appendix C. The main groups of the identified compounds are heterocyclic aromatics and alicyclic, higher alkanes, alkenes, amines, phenols, indoles and amides. Such set of groups of organics in biooil produced from low-lipid algae by HTL was reported previously also by others [14,[41][42][43][44][45][46][47].…”

Section: Gc-mssupporting

confidence: 80%

Effect of process conditions on bio-oil obtained through continuous hydrothermal liquefaction of Scenedesmus sp. microalgae

Wądrzyk

Janus

Vos

et al. 2018

Journal of Analytical and Applied Pyrolysis

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Hydrothermal liquefaction of biomass in near-/supercritical water has attracted great attention in recent years. Although this technology seems to be promising for transformation of microalgal biomass, the information on the impact of feedstock and processing variables of continuous hydrothermal liquefaction on the properties of bio-oil provided in previous literature is scarce. Herein, the low-lipid Scenedesmus sp. biomass has been transformed to bio-oils through continuous hydrothermal liquefaction under various process conditions. The influence of temperature and residence time on bio-oil characteristic was discussed based on characterization by IR, GC-MS and gel permeation chromatography. The relative degree of branching of carbon chain of bio-oils components was estimated based on deconvolution of methyl and methylene IR absorption bands. The presumptive pathways of the reactions have been postulated. Finally, it was found that the parameters of bio-oil may be tailored by adjustment of processing variables, however, possible subsequent/parallel effects must be considered while designing the process.

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Section: Gc-mssupporting

confidence: 80%

Effect of process conditions on bio-oil obtained through continuous hydrothermal liquefaction of Scenedesmus sp. microalgae

Wądrzyk

Janus

Vos

et al. 2018

Journal of Analytical and Applied Pyrolysis

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“…One of the significant advantages of using algae as the biomass source is that it can be grown very easily, and potentially achieve higher production rates of biomass compared to land‐based crops in term of the land surface area used. Algae are fast growing eukaryotic microorganisms that convert sunlight, water and CO 2 into biomass by photosynthesis, and can be cultivated with inexpensive water and nutrients, such as municipal and agricultural wastewaters . Wastewater which normally hinders the growth of plants instead is very effective for growing algae.…”

Section: Algae As a Potential Biomassmentioning

confidence: 99%

“…HTL also involves the thermochemical conversion of diverse type of biomass in the presence of hot compressed water at subcritical water conditions to produce bio‐oil . The HTL process convert biomass into a crude bio‐oil containing monomeric to oligomeric compounds, which mimics the natural geological process of fossil fuels production . The HTL of algal biomass involves liquefaction process in the presence of water, a hydrogen donor solvent at temperature below 400°C and pressure between 4 and 20 MPa for 5–30 min, where subcritical water conditions (temperature range of 250–350°C) are typically reached .…”

Section: Thermochemical Conversion Process Of Algal Biomass To Producmentioning

confidence: 99%

Hydrothermal liquefaction of Malaysia's algal biomass for high‐quality bio‐oil production

Latif

Ong

Nomanbhay

2019

Engineering in Life Sciences

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Currently, fossil materials form the majority of our energy and chemical source. Many global concerns force us to rethink about our current dependence on the fossil energy. Limiting the use of these energy sources is a key priority for most countries that pledge to reduce greenhouse gas emissions. The application of biomass, as substitute fossil resources for producing biofuels, plastics and chemicals, is a widely accepted strategy for sustainable development. Aquatic plants including algae possess competitive advantages as biomass resources compared to the terrestrial plants in this current global situation. Bio‐oil production from algal biomass is technically and economically viable, cost competitive, requires no capacious lands and minimal water use and reduces atmospheric carbon dioxide. The aim of this paper is to review the potential of converting algal biomass, as an aquatic plant, into high‐quality crude bio‐oil through applicable processes in Malaysia. In particular, bio‐based materials and fuels from algal biomass are considered as one of the reliable alternatives for clean energy. Currently, pyrolysis and hydrothermal liquefaction (HTL) are two foremost processes for bio‐oil production from biomass. HTL can directly convert high‐moisture algal biomass into bio‐oil, whereas pyrolysis requires feedstock drying to reduce the energy consumption during the process. Microwave‐assisted HTL, which can be conducted in aqueous environment, is suitable for aquatic plants and wet biomass such as algae.

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“…studies are needed to be able to achieve drop-in-fuels production from HTL of algae. Like petroleum, HTLbiocrude needs upgrading and refining in order to produce transportation fuels (Liang et al, 2017). One of the potential approach is blending biocrude with petroleum feedstocks (Jiang and Savage, 2017).…”

Section: Eboibi Bementioning

confidence: 99%

Assessing yield and properties of distillate from biocrude and blend after hydrothermal liquefaction of microalgae

Eboibi¹

2018

Journal of Applied Sciences and Environmental Management

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This paper is on assessing yield and properties of distillate derived from biocrude, and blend stream of biocrude and conventional petroleum. Biocrude was produced from hydrothermal liquefaction of a halophytic microalga Tetraselmis sp. at 350 o C, 5min with 16w/v% solids content. The resultant biocrude was coprocessed with petroleum using fractional distillation. The result of the study shows that similar yield and quality distillate were obtained from petroleum and blended stream. Distillate fraction obtained from the blend had similar properties such as higher heating values (HHV), H/C atomic ratio and elemental composition to those of petroleum crude. The energy density of biocrude-distillate significantly improved from 72.4MJ/kg to 86.9MJ/kg with about 97% reduction in oxygen content. Recovery of gasoline fractions with normal boiling point range of 190 o C to 290 o C were found higher in petroleum and blend compared to biocrude. This finding is important as coprocessing blend of biocrude and petroleum would address the issues with heteroatoms, which could be of great economic importance. However further studies are necessary on distillate fractions, in order to assure compatibility with petroleum derived fuels.

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Hydrothermal liquefaction of laboratory cultivated and commercial algal biomass into crude bio‐oil

Cited by 9 publications

References 32 publications

Effect of process conditions on bio-oil obtained through continuous hydrothermal liquefaction of Scenedesmus sp. microalgae

Effect of process conditions on bio-oil obtained through continuous hydrothermal liquefaction of Scenedesmus sp. microalgae

Hydrothermal liquefaction of Malaysia's algal biomass for high‐quality bio‐oil production

Assessing yield and properties of distillate from biocrude and blend after hydrothermal liquefaction of microalgae

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