Chemical characterisation of sugarcane bagasse bio-oils from hydrothermal liquefaction: Effect of reaction conditions on products distribution and composition

Nunes, Vanessa O.; Fraga, Adriano C.; Silva, Raquel V.S.; Pontes, Nathália S.; Pinho, Andrea de Rezende; Sousa-Aguiar, Eduardo Falabella; Azevedo, Débora A.

doi:10.1016/j.jece.2021.106513

Cited by 13 publications

(4 citation statements)

References 44 publications

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“…The mass yield and carbon yield of each product phase had the same trend with the increasing reaction temperature, reaction time, and mixing ratio of acid whey to manure digestate (AW/MD) according to the profile of coded coefficient values in Table . This result was expected because carbon is the backbone of constituent compounds of the HTL products . Therefore, the following discussion on the product yield distribution is also applicable for carbon yield distribution.…”

Section: Resultsmentioning

confidence: 90%

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Sustainable Resource Recovery from Dairy Waste: A Case Study of Hydrothermal Co-liquefaction of Acid Whey and Anaerobic Digestate Mixture

Sudibyo

Tester

2023

Energy Fuels

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Uncontrolled emission of carbon and nutrients due to mismanagement of dairy waste leads to global warming, eutrophication of water bodies, aerosol pollution, and acidification of ecosystems. We studied hydrothermal liquefaction (HTL) to sustainably recover resources by converting the dairy wastes into carbon-dense biocrude oil and a nutrient-rich aqueous-phase coproduct. We evaluated acid whey as an alternative source of acid catalyst, replacing acetic acid, for the HTL of anaerobically digested cattle manure (manure digestate). Using well-designed HTL experiments, we investigated the effects of several factors on the product formation and the fate of elements as well as the underlying chemistry. The investigated factors included reaction temperature (280−360 °C), reaction time (10−50 min), mixing ratio of acid whey to manure digestate (AW/MD of 0−2), and the amount of additional acetic acid required, that is, specified based on the final feedstock pH between 3.5 and 5.5. The experimental results suggested the following optimal conditions for enhanced biocrude oil formation and maximal nutrient yield in the aqueous-phase coproduct: AW/MD of 1.21, feedstock mixture pH of 4.5, and reaction temperature and time of 354 °C and 21 min, respectively. Under such conditions, the biocrude oil yield was enhanced to 40−50% (equivalent to 60−80% energy recovery) via cyclic acetalization, hydroxymethylation, isomerization, Piancatelli rearrangement, oxidation, and condensation with heteroatom removal via several deoxygenation and denitrogenation mechanisms. Moreover, these conditions provided adequate acidification to solubilize Mg-carbonate and Ca-phosphate minerals and catalyzed the deamination of N-heterocyclics and other nitrogenous compounds, producing a higher recoverable yield of Mg, NH 3 -N, P, and K nutrients in the aqueous-phase coproduct, that is, 60−70, 30−40, ∼40, and >95%, respectively. This study demonstrated the potential of using HTL for coprocessing manure digestate and acid whey to measurably valorize biomass waste as a key component of achieving a circular bioeconomy for the dairy industry.

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Section: Resultsmentioning

confidence: 90%

“…This result was expected because carbon is the backbone of constituent compounds of the HTL products. 47 Therefore, the following discussion on the product yield distribution is also applicable for carbon yield distribution.…”

Section: Product and Carbonmentioning

confidence: 99%

Sustainable Resource Recovery from Dairy Waste: A Case Study of Hydrothermal Co-liquefaction of Acid Whey and Anaerobic Digestate Mixture

Sudibyo

Tester

2023

Energy Fuels

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“…The challenges concerning the energy and industrial security of the future, and the environmental problems related to the use of fossil fuels, have directed the pursuit of energy and industrial chemical supplies to a matrix that is environmentally friendly and widely available, such as biomass [1]. Due to its high abundance and potential for the production of fuels and biochemicals, biomass became the foundation of today's renewable energy [2]. The sugar and ethanol industries play a significant role in the global economy and the production of an important lignocellulosic residue, the sugarcane bagasse (SCB) [3].…”

Section: Introductionmentioning

confidence: 99%

Thermal Conversion of Sugarcane Bagasse Coupled with Vapor Phase Hydrotreatment over Nickel-Based Catalysts: A Comprehensive Characterization of Upgraded Products

et al. 2022

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In the present work, we compared the chemical profile of the organic compounds produced in non-catalytic pyrolysis of sugarcane bagasse at 500 °C with those obtained by the in-line catalytic upgrading of the vapor phase at 350 °C. The influence over the chemical profile was evaluated by testing two Ni-based catalysts employing an inert atmosphere (N2) and a reactive atmosphere (H2) under atmospheric pressure with yields of the liquid phase varying from 55 to 62%. Major changes in the chemical profile were evidenced in the process under the H2 atmosphere, wherein a higher degree of deoxygenation was identified due to the effect of synergistic action between the catalyst and H2. The organic fraction of the liquid phase, called bio-oil, showed an increase in the relative content of alcohols and phenolic compounds in the GC/MS fingerprint after the upgrading process, corroborating with the action of the catalytic process upon the compounds derived from sugar and carboxylic acids. Thus, the thermal conversion of sugarcane bagasse, in a process under an H2 atmosphere and the presence of Ni-based catalysts, promoted higher deoxygenation performance of the pyrolytic vapors, acting mainly through sugar dehydration reactions. Therefore, the adoption of this process can potentialize the use of this waste biomass to produce a bio-oil with higher content of phenolic species, which have a wide range of applications in the energy and industrial sectors.

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“…Comprehensive two-dimensional gas chromatography hyphenated with mass spectrometry (GC × GC-MS) has been widely used for the characterization of bio-oils in recent years. − However, the majority of these studies emphasized GC × GC separation and only utilized MS as a tool for identification. Meanwhile, the flame ionization detector (FID) has been used as a general-purpose detector to perform quantitative analysis. − When facing a complex oxygenate–hydrocarbon mixture such as bio-oils, GC × GC separation provides great improvement in chromatographic resolution as well as enhanced peak intensity compared to traditional one-dimensional GC separation .…”

Section: Introductionmentioning

confidence: 99%

Compositional Characterization of a Hydrothermal Liquefaction (HTL) Bio-Oil Mid-Distillate by Comprehensive Two-Dimensional Gas Chromatography (GC × GC)

Wang

2022

Energy Fuels

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The composition of a bio-oil in the mid-distillate boiling range produced via a hydrothermal liquefaction (HTL) process was characterized by comprehensive two-dimensional gas chromatography (GC × GC) technology hyphenated with electron ionization (EI) and field ionization (FI) mass spectrometry (MS) (GC × GC × EI/FI-MS). GC × GC × EI/FI-MS is used for the separation and identification of hydrocarbons as well as oxygenates, while GC × GC with flame ionization detection (FID) can be used for quantitative analysis of the separated components. With GC × GC plus EI/FI-MS separation, it is now possible to distinguish all oxygenates from hydrocarbons in this complex mixture based on the difference in their nominal mass classes. Overall, the ability to determine the composition and structure of HTL bio-oil will enable bio-oil research and development into the next stages of process and production, such as process development and scale-up, compositional modeling, and catalyst development.

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Chemical characterisation of sugarcane bagasse bio-oils from hydrothermal liquefaction: Effect of reaction conditions on products distribution and composition

Cited by 13 publications

References 44 publications

Sustainable Resource Recovery from Dairy Waste: A Case Study of Hydrothermal Co-liquefaction of Acid Whey and Anaerobic Digestate Mixture

Sustainable Resource Recovery from Dairy Waste: A Case Study of Hydrothermal Co-liquefaction of Acid Whey and Anaerobic Digestate Mixture

Thermal Conversion of Sugarcane Bagasse Coupled with Vapor Phase Hydrotreatment over Nickel-Based Catalysts: A Comprehensive Characterization of Upgraded Products

Compositional Characterization of a Hydrothermal Liquefaction (HTL) Bio-Oil Mid-Distillate by Comprehensive Two-Dimensional Gas Chromatography (GC × GC)

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