Study of Biocrudes Obtained via Hydrothermal Liquefaction (HTL) of Wild Alga Consortium under Different Conditions

Barrère-Mangote, Caroline; Roubaud, Anne; Bouyssière, Brice; Maillard, Julien; Hertzog, Jasmine; Maitre, J.; Hubert‐Roux, Marie; Sassi, Jean-François; Afonso, Carlos; Giusti, Pierre

doi:10.3390/pr9091494

Cited by 16 publications

(12 citation statements)

References 28 publications

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“…The present approach could be used with other complex organic matter. For instance, microalgae-based bio-oils contain a significant amount of nitrogen-containing species that could be quantified with similar approach to improve the refining processes …”

Section: Resultsmentioning

confidence: 99%

Speciation and Semiquantification of Nitrogen-Containing Species in Complex Mixtures: Application to Plastic Pyrolysis Oil

et al. 2022

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Plastic pyrolysis oil is of particular interest for waste management in the current context of a circular economy. Due to their uncontrolled origin, these oils may contain significant amount of unwanted compounds such as nitrogen-containing species. These compounds are known to be catalyst poisons during refining processes. Therefore, the removal of these species is crucial, and their characterization from structural and quantification points of view is essential for this purpose. This study presents a method to specify and quantify nitrogen-containing classes in a plastic pyrolysis oil by direct infusion mass spectrometry. Two steps were used, namely structural characterization to select suitable standards and semiquantification. The structural speciation of nitrogen-containing compounds was first performed by electrospray ionization Fourier transform mass spectrometry, followed by tandem mass spectrometry using high-resolution mass isolation and infrared multiphoton dissociation fragmentation. A semiquantification is then performed by the standard addition method, which is very appropriate for such complex matrices. Aromatic cores such as quinoline and quinoxaline were evidenced for both N 1 and N 2 classes, allowing 2-methylquinoxaline and 2-butylquinoline to be proposed as standards for the semiquantification of N 2 - and N 1 -containing compounds, respectively. The amount of nitrogen detected from the sum of the individual species was consistent with the bulk analysis. The reported methodology can be applied to numerous other families of compounds in various other complex matrices.

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Section: Resultsmentioning

confidence: 99%

Speciation and Semiquantification of Nitrogen-Containing Species in Complex Mixtures: Application to Plastic Pyrolysis Oil

et al. 2022

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“…The microalgae elemental and biochemical composition are reported in the supplementary material, Table S4. The HTL reaction of microalgae was performed in the continuous pilot‐scale setup described elsewhere by CEA [63] . The microalga was dispersed at 10 % of organic matter in water and injected into the reactor through a dual‐syringe pump with a flow rate of 1.5 L/h so that the estimated residence time is in the order of 15 min.…”

Section: Methodsmentioning

confidence: 99%

Catalytic Hydrotreatment of Algal HTL Bio‐Oil over Phosphide, Nitride, and Sulfide Catalysts

et al. 2023

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Global energy demand and environmental concerns about limiting CO 2 emissions have been growing recently. This is why fuel production from renewable resources has become a priority. In this context, microalgae represent an attractive alternative carbon source. In this work, different supported catalysts, including metal phosphide, nitride, and sulfide, were tested for the hydroconversion of bio-oil issued from the hydrothermal liquefaction of microalgae. Supported Ni phosphide catalysts promoted the decarboxylation and decar-bonylation route, while NiMo nitride promoted the hydrodeoxygenation pathway. NiW sulfide catalysts were the most performant, producing a hydrotreated oil with the best higher heating value (HHV), lower aromaticity degree, and lower average molar mass. Among sulfide catalysts, NiWS/SiO 2 À Al 2 O 3 was the least active, probably due to the inhibition of acid sites by the nitrogen compounds. However, NiWS/Al 2 O 3 performed better, showing high hydrogenation performances, which contributed to the conversion of refractory compounds.

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“…Bio-oils are a type of liquid biofuel derived from the thermal decomposition of lignocellulosic biomass, organic waste, or algae (see Figure ). The main advantage of bio-oils is their derivation from non-edible biomass, rendering them distinct from first-generation biofuels. − The two main processes used to produce bio-oils are pyrolysis and HTL. Pyrolysis can be divided into several types, including slow, fast, catalytic, and hydropyrolysis.…”

Section: Focus On Bio-oilsmentioning

confidence: 99%

“…In fast pyrolysis, dry biomass is exposed to high temperatures in an oxygen-free atmosphere for a short time, resulting in the formation of liquid bio-oil, biochar, and non-condensable gases . In HTL, biomass is exposed to a high pressure and temperature with a solvent for several minutes (10–60 min), producing bio-oil, biochar, syngas, and water-soluble compounds. , Bio-oils are characterized by a complex organic matrix, which can vary based on the type of biomass from which they are produced. When derived from lignocellulosic feedstock, bio-oils are composed of several organic families, including acids, alcohols, aldehydes, ketones, phenols, sugars, and oligomers from the fragmentation of lignin, cellulose, and hemicellulose, with a relatively high oxygen content.…”

Section: Focus On Bio-oilsmentioning

confidence: 99%

Bio-oil Inorganic Analysis: A Minireview of Current Trends, Challenges, and Future Perspectives

et al. 2023

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The analysis of the inorganic content of bio-oils has not been widely reported in the literature. In this work, the analytical methods employed for the quantification and speciation of inorganic species in bio-oils are summarized. Total inorganic analysis of bio-oils is commonly performed using inductively coupled plasma optical emission spectrometry and inductively coupled plasma mass spectrometry techniques; however, other quantitation techniques are compiled and discussed in this review. Additionally, the few studies that have recently been reported on the inorganic speciation of bio-oils by supercritical fluid chromatography−inductively coupled plasma mass spectrometry, gel permeation chromatography−inductively coupled plasma highresolution mass spectrometry, and electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry are also addressed. Cumulatively, the reports suggest that the lack of standard analytical methods in the total inorganic analysis of bio-oils is a major contributor to inaccurate results. Thus, future research with analytical methodologies already applied in crude oils should be adapted to account for the unique bio-oil(s) matrix. Such a strategy offers a path toward more accurate inorganic speciation/quantitation of inorganics in bio-oils, which might be the key to the understanding of production problems, storage stability, and upgrading processes commonly encountered with such samples.

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Study of Biocrudes Obtained via Hydrothermal Liquefaction (HTL) of Wild Alga Consortium under Different Conditions

Cited by 16 publications

References 28 publications

Speciation and Semiquantification of Nitrogen-Containing Species in Complex Mixtures: Application to Plastic Pyrolysis Oil

Speciation and Semiquantification of Nitrogen-Containing Species in Complex Mixtures: Application to Plastic Pyrolysis Oil

Catalytic Hydrotreatment of Algal HTL Bio‐Oil over Phosphide, Nitride, and Sulfide Catalysts

Bio-oil Inorganic Analysis: A Minireview of Current Trends, Challenges, and Future Perspectives

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