Desalting biocrude for improved downstream processing toward marine fuel application

Kilgore, Uriah J.; Santosa, Daniel M.; Li, Shuyun; Pei-pei, Wang; Lee, Suh-Jane; Thorson, Michael R.; Ramasamy, Karthikeyan

doi:10.1039/d3se00189j

Cited by 5 publications

(1 citation statement)

References 59 publications

(85 reference statements)

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“…Alternative fuels from biomass fast pyrolysis are promising “green” energy sources with the potential to offset carbon emissions . Indeed, fast pyrolysis of biomass has been the target of extensive scientific efforts since the oil crisis in the mid-1970s, with significant advances in catalyst development for hydrotreatment achieved in the past decade. − Thus, current biomass pyrolysis methods can produce liquid intermediates that can be upgraded to obtain hydrocarbon molecules with properties consistent with transportation fuels. − …”

Section: Introductionmentioning

confidence: 99%

Petroleomics Approach to Investigate the Composition of Upgrading Products from Pyrolysis Bio-Oils as Determined by High-Field FT-ICR MS

Chacón-Patiño,

Mase,

Maillard

et al. 2023

Energy Fuels

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One of the few similarities between petroleum and bio-oils derived from biomass pyrolysis is that they are both complex organic mixtures composed of thousands of distinct elemental compositions, but biomass pyrolysis oils uniquely contain ultrahigh oxygen content and a more diverse collection of chemical functionalities. Thus, their chemistry is different from fossil fuels, and advanced upgrading strategies for the coprocessing of such unique materials along with conventional refinery feeds will benefit from comprehensive knowledge of their molecular composition, known as petroleomics. The work presented herein focuses on the molecular characterization of nonvolatile species from a loblolly pine bio-oil and its hydrotreated effluents by soft ionization methods coupled to high-field Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Electrospray ionization (ESI) facilitates the analysis of polar oxygen-containing molecules, whereas atmospheric pressure chemical ionization (APCI) enables access to hydrocarbons. The molecular data revealed time-dependent compositional changes, visualized in van Krevelen diagrams, that highlighted the optimal catalyst performance and the impacts of catalyst fouling or deactivation. Furthermore, elucidation of compositional features such as abundance-weighted H/C, O/C, molecular weight, and aromaticity facilitated data interpretation and suggested that value-added bio-oils are likely produced upon a concurrent decrease in oxygen content, aromaticity, and molecular weight with a marked increase in H/C. Furthermore, distinct temporal molecular changes suggested specific hydrotreatment reaction pathways, including concurrent deoxygenation and hydrogenation, transalkylation, and cracking of highly aromatic lignin-like oligomers. The detailed molecular characterization provided by FT-ICR MS facilitated access to common molecular formulas (those detected both before and after upgrading). Common formulas are hypothetically recalcitrant compounds, which feature a highly aromatic nature (low H/C) and alkyl deficiency. Understanding the chemistry of such molecules, along with the remaining oxygen-containing species, is critical for future advances in bio-oil upgrading.

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Section: Introductionmentioning

confidence: 99%

Petroleomics Approach to Investigate the Composition of Upgrading Products from Pyrolysis Bio-Oils as Determined by High-Field FT-ICR MS

Chacón-Patiño,

Mase,

Maillard

et al. 2023

Energy Fuels

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Hydrothermal liquefaction of microalga with and without seawater: Effects of reaction temperature on yield and hydrocarbon species distribution in biocrude

Eboibi,

Okan

et al. 2024

Env Prog and Sustain Energy

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A halophytic microalga Tetraselmis sp. biomass diluted with deionized water and seawater was converted to biocrude with the hydrothermal liquefaction (HTL) process in a batch reactor at 310, 330, 350, and 370°C, 15 min with %w/w solids. The biocrude yield, carbon, and energy recovery in biocrude and hydrocarbon species distribution from deionized water base HTL (DW HTL) and seawater base HTL (SW HTL) were evaluated. The results revealed that irrespective of reaction medium, the yield in biocrude increased with an increase in temperature, reaching a maximum of 50–56 wt% at 350°C, characterized by a higher heating value of up to 35.6 MJ/kg. The carbon and energy recovery at 350°C were 85% and 89% respectively, for SW HTL, while the DW HTL stream was 10% and 12% lower. Also, the GC MS analysis of biocrude obtained from both streams contains a complex mixture of compounds such as hydrocarbons, phenolics, and large amounts of nitrogenated and oxygenated compounds. The metallic constituents in biocrudes derived from both steams showed no substantial variations. The study showed a marginal increase in biocrude yield and its HHV with a reduction in oxygen and nitrogen contents from the SW HTL stream, suggesting the potential of seawater as a reaction medium.

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Influence of Seawater and Reaction Temperature on Biocrude Yield and Composition During Hydrothermal Liquefaction of Spirulina sp. Microalgal Biomass

Eboibi,

Amabogha

et al. 2023

Waste Biomass Valor

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Desalting biocrude for improved downstream processing toward marine fuel application

Abstract: Simple methods for desalting HTL-derived biocrudes from food waste improve their properties and reduce hydrotreating demands, bringing them toward use as marine fuels.

Cited by 5 publications

References 59 publications

Petroleomics Approach to Investigate the Composition of Upgrading Products from Pyrolysis Bio-Oils as Determined by High-Field FT-ICR MS

Petroleomics Approach to Investigate the Composition of Upgrading Products from Pyrolysis Bio-Oils as Determined by High-Field FT-ICR MS

Hydrothermal liquefaction of microalga with and without seawater: Effects of reaction temperature on yield and hydrocarbon species distribution in biocrude

Influence of Seawater and Reaction Temperature on Biocrude Yield and Composition During Hydrothermal Liquefaction of Spirulina sp. Microalgal Biomass

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