Fast pyrolysis of microalgae remnants in a fluidized bed reactor for bio-oil and biochar production

Wang, Kaige; Brown, Robert C.; Homsy, Sally Louis; Martínez, L.E. Cáceres; Sidhu, Sukh

doi:10.1016/j.biortech.2012.08.016

Cited by 295 publications

(107 citation statements)

References 30 publications

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“…This result was consistent with a previous study [13] and proved their environmentally friendly properties. Besides C, H and O elements, there was 3.59% and 4.66% N in the two kinds of microalgal bio-oils, BO sub and BO sup , respectively, which came from the algal protein of the microalgae [13]. The detailed chemical structures and components were analyzed from the FTIR results ( Fig.…”

Section: Components Of the Bio-oilssupporting

confidence: 94%

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Influence of Microalgal Bio-Oil on the Lubrication Properties of Engine Oil

Peng

Zheng

et al. 2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-In order to accelerate and expand the application of bio-energy, two kinds of microalgal bio-oils, prepared via co-liquefaction of Chlorella and Spirulina under sub-and supercritical ethanol conditions, were used as partial substitutes for the engine oil CD SAE 15W-40. The friction and wear behaviors of the oils were tested on a four-ball tribometer, referring to the ASTM D4172 standard conditions. The micro-morphology, profiles, roughness and chemical valences of typical elements on the rubbed surfaces were characterized by Scanning Electron Microscopy (SEM), surface profiler and X-ray Photoelectron Spectroscopy (XPS), respectively. The results showed that both of the bio-oils had good lubrication properties. The suitable weight content of the bio-oils in the engine oil was 10%. The lubrication properties of the Bio-Oil (BO sup ) prepared in supercritical ethanol were a little better than those of the Bio-Oil (BO sub ) prepared in subcritical ethanol. The lubricating mechanisms were ascribed to the combined actions of various lubricating films, including boundary lubrication, and deposited films and tribological chemical reaction films. The stronger tribological chemical effects of BO sup from higher contents of N-containing compounds contributed to its better lubrication properties than those of BO sub .Résumé -Influence de bio-huiles issues d'algues sur les propriétés de lubrification d'une huile moteur -Afin d'accélérer et d'étendre l'application des bioénergies, deux types de bio-huiles issues d'algues, préparées par co-liquéfaction de Chlorella et Spirulina dans de l'éthanol à l'état sous-et supercritiques, ont été utilisés comme substituts partiels de l'huile moteur CD SAE 15W-40. Les comportements d'usure et de frottement avec ces huiles ont été testés sur un tribomètre à quatre billes, en se référant aux conditions de la norme ASTM D4172. La micromorphologie, les profils et la rugosité de surface ainsi que les valences chimiques des éléments typiques sur les surfaces frottées ont été respectivement caractérisés par une microscopie à balayage électronique (SEM, Scanning Electron Microscopy), par un profilomètre de surface et par spectroscopie photo-électronique des rayons X (XPS, X-ray Photoelectron Spectroscopy). Les résultats ont montré que les bio-huiles avaient toutes deux de bonnes propriétés de lubrification. La teneur en poids adaptée des bio-huiles dans l'huile moteur était de 10 %. Les propriétés de lubrification de la bio-huile (BO sup ) préparée dans de l'éthanol supercritique ont été légèrement meilleures que celles de la bio-huile (BO sub ) préparée dans de l'éthanol sous-critique. Les mécanismes de lubrification ont été attribués aux actions combinées de différents films de lubrification (y compris un graissage à film d'huile, et de films de dépôts) et de films de réaction chimique tribologiques. Les effets tribo-chimiques plus forts de l'huile BO sup contenant des teneurs supérieures en composés contenant de l'azote ont contribué à rendre ses propriétés de lubrification supérieur...

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Section: Components Of the Bio-oilssupporting

confidence: 94%

“…Compared with other biomass, microalgae have a higher photosynthetic rate, faster growth rate and higher yield. Bio-oil from microalgae has become a hot topic in biomass energy [11][12][13]. Unfortunately, to the best of our knowledge, the lubrication properties of microalgal bio-oil have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of Microalgal Bio-Oil on the Lubrication Properties of Engine Oil

Peng

Zheng

et al. 2015

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Therefore, fast pyrolysis has received more attention lately for bio-oil production. The yield and HHV of bio-oil from the fast pyrolysis of microalgae are in the ranges of 18-72 wt% (Kim et al, 2014;Belotti et al, 2014; and 24-41 MJ kg À1 (Wang et al, 2013;, respectively. pointed out that the bio-oils from the fast pyrolysis of microalgae have higher calorific values and lower O contents when compared to the bio-oils from wood.…”

Section: Fast Pyrolysismentioning

confidence: 99%

Thermochemical conversion of microalgal biomass into biofuels: A review

Chen

Lin

Huang

et al. 2015

Bioresource Technology

490

133

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“…In addition, several other researchers have studied switchgrass pyrolysis conversion and have evaluated the product distribution [7], energy conversion efficiency in a bench-scale reactor [8], and the effect of milling of the obtained bio-oil [9]. Several studies on pyrolysis conversion have also been reported, which used crops other than switchgrass, such as wheat straw [10], rice husk [11], tobacco residue [12], orange waste [13], giant cane [14], and microalgae [15].…”

Section: Introductionmentioning

confidence: 99%

Chemical properties of bio-oils produced by fast pyrolysis of bamboo

Kato

Kohnosu

Enomoto

et al. 2014

Trans. Mat. Res. Soc. Japan

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Bamboo powder was analytically pyrolyzed using pyrolysis-gas chromatography (Py-GC), and the effects of fast pyrolysis conditions on the product distribution of bio-oil were evaluated. 4-Vinylphenol (4VP) was identified as a major product of bamboo fast pyrolysis by 1 H-NMR and 13 C-NMR spectrometry. The formation pathway of 4VP demonstrated that p-coumarate esters are present in bamboo lignin, and 4VP is likely to be derived from these p-coumarate structures. The evaluation of the effect of fast pyrolysis temperature on the product distribution of bio-oil revealed that increasing pyrolysis temperature resulted in high yields of compounds containing a furan structure and reduced yields of phenolic compounds, except catechol. The fast pyrolysis of Klason lignin produced 4VP in lower yield than that from bamboo powder, even though the yield of 4-vinylguaiacol from acid lignin was greater than that from bamboo powder. In comparison with fast pyrolysis, slow pyrolysis of bamboo produced simple phenols, such as phenol, guaiacol, methyl guaiacol, syringol, and methyl syringol, in higher yields, whereas the yield of 4VP was lower than that from fast pyrolysis. The chemical characteristics of bio-oil depend on the biomass source, pyrolysis conditions, and the type of pyrolyzer.

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Fast pyrolysis of microalgae remnants in a fluidized bed reactor for bio-oil and biochar production

Cited by 295 publications

References 30 publications

Influence of Microalgal Bio-Oil on the Lubrication Properties of Engine Oil

Influence of Microalgal Bio-Oil on the Lubrication Properties of Engine Oil

Thermochemical conversion of microalgal biomass into biofuels: A review

Chemical properties of bio-oils produced by fast pyrolysis of bamboo

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