Reaction kinetics for the hydrothermal carbonisation of cellulose in a two-phase pathway

Chacón-Parra, Andrés; Eyk, Philip J. van

doi:10.1016/j.fuel.2021.122169

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…The already-cited review by Ischia and Fiori (2020) [47] has comprehensively outlined the progress and gaps in kinetic modeling of HTC, so only a succinct recall is provided here. Some related works have been published since the aforementioned review [52][53][54][55][56], but the overarching recommendations remain valid.…”

Section: Kinetic Modelsmentioning

confidence: 99%

Research Needs and Pathways to Advance Hydrothermal Carbonization Technology

Dang,

Cappai,

Chung

et al. 2024

Agronomy

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Hydrothermal carbonization (HTC) is a proven cost-effective and energy-efficient method for waste management and value-added product recovery. There are, however, several issues that require further improvement or research. Identifying the strengths and weaknesses of HTC in comparison to traditional pyrolysis is crucial for scientists to choose between them or use both (complementary) to achieve specific product properties. Additionally, sharing information on diverse modeling approaches and scales is crucial to enhance the robustness and universality of HTC process models. In addition, the study on the applicability of hydrochars on target applications such as soil amendment is crucial to give back nutrients to soils and face the dependence on finite specific feedstocks in this field. Also, proper management of the process by-products, especially process water, must be addressed to improve the carbon and hydric footprint of the process. Reviewing the suitability of HTC to treat specific challenging wastes, whose strength is not related to their calorific value but to their nutrient composition (i.e., manures), is also an appealing topic for HTC research. This paper aims to tackle the above-mentioned issues through an updated review and discussion of research gaps that require further investigation.

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Section: Kinetic Modelsmentioning

confidence: 99%

Research Needs and Pathways to Advance Hydrothermal Carbonization Technology

Dang,

Cappai,

Chung

et al. 2024

Agronomy

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“…The process encourages various reactions to loosen the components that bind the lignocellulosic structure together, causing the release of the cellulose and hemicellulose that are intertwined within [7]. Further, HTC reactions hydrolyze the cellulose to produce glucose and hemicellulose to produce its constituent hexoses and pentoses [8][9][10]. The solid HTC pretreated product can be pressed into pellets for use as a solid fuel [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Sugar Extraction from Secondary Agricultural Waste Biomass Using Hydrothermal Carbonization and Direct Contact Membrane Distillation

Sagar,

Lynam,

Parrenin

2023

Biomass

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Sustainable and renewable sources of liquid and solid fuels are essential to prevent fossil fuel use from damaging the environment. Secondary agricultural residues, which are already transported to food processing centers, have great potential to be converted into biofuels. The wastes from coffee roasting, sugar production, and rice milling have been investigated using hydrothermal carbonization (HTC) to produce aqueous products containing monosaccharides alongside solid biofuels. These sugar-laden liquid products were characterized after pretreating coffee silverskins, sugarcane bagasse, and rice husks with HTC. They were then concentrated using direct contact membrane distillation (DCMD), a low-energy process that can use waste heat from other biorefinery processes. The higher heating value of the solid products was also characterized by bomb calorimetry. The liquid products from HTC of these wastes from food production were found to contain varying concentrations of glucose, xylose, galactose, and arabinose. DCMD was capable of concentrating the liquid products up to three times their original concentrations. Little difference was found among the higher heating values of the solid products after 180 °C HTC pretreatment compared to 200 °C pretreatment. HTC of waste from food processing can provide solid biofuels and liquid products containing sugars that can be concentrated using DCMD.

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“…[25][26] Fructose and glucose molecules may also undergo dehydration reactions followed by CÀ C bond breaking producing several soluble products like 1,6-anhydroglucose, erythrose, 5-hydroxy methylfurfural, or acetaldehyde. [27][28][29] The next stage of the hydrothermal carbonization process involves a polymerization of the previous intermediates via aldol condensation. These reactions produce a great amount of oligomers with different oxygenated groups.…”

Section: Introductionmentioning

confidence: 99%

“…The latter decomposes into different organic derivatives such as levulinic acid, formic acid among others [25–26] . Fructose and glucose molecules may also undergo dehydration reactions followed by C−C bond breaking producing several soluble products like 1,6‐anhydroglucose, erythrose, 5‐hydroxy methylfurfural, or acetaldehyde [27–29] . The next stage of the hydrothermal carbonization process involves a polymerization of the previous intermediates via aldol condensation.…”

Section: Introductionmentioning

confidence: 99%

Ru on Modified Carbon Submicrometric Spheres as Novel Catalysts for the Oxidative Cleavage of Oleic Acid with N‐Methylmorpholine‐N‐Oxide as Green Oxidizing Agent

2022

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Oxidative cleavage of unsaturated fatty acids involves the rupture of carbon‐carbon double bonds to produce carbonyl compounds of high added value. This reaction is mainly performed using homogenous catalysts which are pollutant and cannot be recovered while current heterogeneous catalysts display poor activity. To solve this issue, an active catalyst was prepared by impregnating Ru ions on carbon spheres synthesized by hydrothermal carbonization of a glucose solution. Carbon spheres were calcined under air atmosphere to create porosity and functionalized with polydopamine to improve their ability to complex Ru ions. The catalyst was fully characterized and completed the oxidative cleavage of oleic acid within 7 h of stirring at room temperature using NaIO4 as oxidizing agent. The addition of N‐methylmorpholine N‐oxide, a green oxidizing agent, allowed >99 % conversion in only 5 h. Therefore, it was possible to conceive an eco‐friendly carbon catalyst for the valorization of oleic acid under mild conditions.

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Reaction kinetics for the hydrothermal carbonisation of cellulose in a two-phase pathway

Cited by 7 publications

References 38 publications

Research Needs and Pathways to Advance Hydrothermal Carbonization Technology

Research Needs and Pathways to Advance Hydrothermal Carbonization Technology

Sugar Extraction from Secondary Agricultural Waste Biomass Using Hydrothermal Carbonization and Direct Contact Membrane Distillation

Ru on Modified Carbon Submicrometric Spheres as Novel Catalysts for the Oxidative Cleavage of Oleic Acid with N‐Methylmorpholine‐N‐Oxide as Green Oxidizing Agent

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