Hydrotreatment of pyrolysis liquids derived from second-generation bioethanol production residues over NiMo and CoMo catalysts

Priharto, Neil; Ronsse, Frederik; Prins, Wolter; Hita, Idoia; Deuss, Peter J.; Heeres, Hero J.

doi:10.1016/j.biombioe.2019.05.005

Cited by 25 publications

(28 citation statements)

References 40 publications

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“…Even though the oxygen content is lower than in ordinary pyrolysis liquids from poplar or pine, a direct usage of the heavy phase for liquid fuel purposes is limited due to this high nitrogen content and relatively high oxygen content compared to petroleum-based fuels. Secondary upgrading by hydrotreatment is therefore still required [33].…”

Section: Elemental Compositionmentioning

confidence: 99%

Fast pyrolysis with fractional condensation of lignin-rich digested stillage from second-generation bioethanol production

Priharto

Ronsse

Yıldız

et al. 2020

Journal of Analytical and Applied Pyrolysis

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Section: Elemental Compositionmentioning

confidence: 99%

Fast pyrolysis with fractional condensation of lignin-rich digested stillage from second-generation bioethanol production

Priharto

Ronsse

Yıldız

et al. 2020

Journal of Analytical and Applied Pyrolysis

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“…Mainly 4vinylphenol and 4-vinylguaiacol were formed with a selectivity of up to 43.9 wt% at 500 • C. Ru-based catalysts supported over ZrO 2 and activated carbon were applied by Gómez-Monedero et al [19] on the solvent-aided hydrotreatment of an industrial BPS in a batch reactor resulting in liquid product yields in the 60-70% range. The hydrotreatment of pyrolysis liquids derived from BPS residues was also recently reported by Priharto et al [20] for the production of monomers, achieving total monomer yields of up to 50 wt%, primarily in the form of alkylphenols. Other advanced bioethanol stillage applications include the use of thermoset biocomposites [21] and the production of adhesives [22], among others.…”

Section: Introductionmentioning

confidence: 56%

“…In this case, two temperatures (305 • C and 350 • C) were selected to obtain HTL oils with distinct characteristics in terms of polymerization and functionalization degree, oxygen content, and monomer content. Experimental conditions for the HDO reaction (100 bar initial H 2 pressure, 375-450 • C) are in line with those for the HDO of typical lignocellulosic biomass and technical lignins [20,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 88%

Hydrothermal liquefaction versus catalytic hydrodeoxygenation of a bioethanol production stillage residue to platform chemicals: A comparative study

Hita

Ghoreishi

Santos

et al. 2021

Fuel Processing Technology

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Biobased chemicals like phenols and aromatics are preferably produced from cheap biomass waste streams. In this work, we have explored the potential of a eucalyptus-derived second generation bioethanol production stillage (BPS) residue for this purpose. A comparative study between a hydrothermal liquefaction (HTL) and a catalytic hydrodeoxygenation (HDO) step, as well as a 2-step HTL-HDO approach is reported, targeting at valueadded low molecular weight platform chemicals (mainly alkylphenols and aromatics). HDO was observed to be a more suitable strategy than HTL for the production of organic oils enriched in valuable monomers. The direct HDO of the BPS using a commercial Ru/C catalyst at 450 • C and 100 bar H 2 pressure led to an organic product oil (30.7 wt%) with a total monomer yield of 25.2 wt% (13.2 wt% of alkylphenolic+aromatics), compared to a 53.2 wt% of a product oil with 10.0 wt% monomers for the HTL step (305 • C). A 2-step HTL-HDO strategy was compared with the direct HDO approach. Comparable alkylphenolic+aromatic yields were obtained through this approach based on initial BPS intake (13.2 wt% vs 12.3 wt% for the direct HDO and HTL-HDO approach, respectively). Lower HTL temperatures (305 • C) for the first step are preferred to prevent over hydrogenation in the subsequent HDO step. As such, HTL appears a suitable pre-treatment for BPS and can (i) solve the issues related to the feeding of solids in pressurized continuous reactors for HDO and (ii) prevent coke formation during the HDO step, thus improving catalyst stability and durability.

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“…For FT-BTL route, two logistic configurations were considered to evaluate the cost benefits of biomass pre-treatment prior to final conversion to fuel. Process and technologies for each pathway have been extensively discussed in the literature [2,5,39,[57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75]. It is worth mentioning that HVO, ATD, and FT are in theory full drop-in fuels, while SVO and HDPO (depending on the quality of finished fuel) would compose fuel blends [24,69].…”

Section: Techno-economic Pathways To Produce Maritime Biofuelsmentioning

confidence: 99%

Biofuels for Maritime Transportation: A Spatial, Techno-Economic, and Logistic Analysis in Brazil, Europe, South Africa, and the USA

et al. 2021

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Low or zero carbon fuels are crucial for maritime transportation decarbonization goals. This paper assesses potential localities for maritime biofuels (biobunkers) production in Brazil, Europe, South Africa, and United States considering geographical, logistic, and economic aspects. This assessment combines georeferenced and techno-economic analyses to identify suitable fuel production hotspots based on not only plant performance and costs but also on logistic integration and biomass seasonality. Five technology pathways were considered: Straight vegetable Oils (SVO), Hydrotreated Vegetable Oils (HVO), Fischer–Tropsch Biomass-to-liquids (FT-BTL), Alcohol oligomerization to middle distillates (ATD), and Hydrotreated Pyrolysis Oil (HDPO). Findings reveal that biomass concentration in Brazil makes it the region with highest biobunker potential, which are mostly close to coastal areas and surpasses regional demand. Although other regions registered more limited potentials, hotspots proximity to ports would enable fossil fuel replacements in these areas. For all cases, biobunker costs (USD 21–104/GJ) are higher than conventional marine fuels prices (USD 11–17/GJ). Only 15% of the hotspots’ carbon prices that would allow its competitiveness are lower than USD 100/tCO2. Alternatives to incentivize biobunker production would be, first, to establish mandatory fuel blends and second, to join forces with other sectors that would be benefited from the co-production of advanced biofuels.

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Hydrotreatment of pyrolysis liquids derived from second-generation bioethanol production residues over NiMo and CoMo catalysts

Cited by 25 publications

References 40 publications

Fast pyrolysis with fractional condensation of lignin-rich digested stillage from second-generation bioethanol production

Fast pyrolysis with fractional condensation of lignin-rich digested stillage from second-generation bioethanol production

Hydrothermal liquefaction versus catalytic hydrodeoxygenation of a bioethanol production stillage residue to platform chemicals: A comparative study

Biofuels for Maritime Transportation: A Spatial, Techno-Economic, and Logistic Analysis in Brazil, Europe, South Africa, and the USA

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