Liquid Hot Water Pretreatment of Lignocellulosic Biomass at Lab and Pilot Scale

Jimenez-Gutierrez, Jose M. (Chema); Verlinden, Rob A. J.; Meer, Peter C. van der; Wielen, Luuk A. M. van der; Straathof, Adrie J. J.

doi:10.3390/pr9091518

Cited by 27 publications

(6 citation statements)

References 50 publications

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“…The liquid fraction contains hemicellulose-derived sugars, and the solid fraction contains cellulose. Better pH control (4-7) minimizes the non-specific degradation of sugars and avoids toxic compound formation [57]. Liquid hot water can primarily result in a high hemicellulosic sugar fraction in the form of oligomers and reduce by-product formation.…”

Section: Liquid Hot Water (Lhw)mentioning

confidence: 99%

The Production of Bioethanol from Lignocellulosic Biomass: Pretreatment Methods, Fermentation, and Downstream Processing

Beluhan,

Mihajlovski,

Šantek

et al. 2023

Energies

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Bioethanol is the most widely used alternative transportation fuel to petrol. Bioethanol is considered a clean, renewable, and environmentally friendly fuel that can contribute to climate change mitigation, decreased environmental pollution, and enhanced energy security. Commercial bioethanol production is based on traditional agricultural crops such as corn, sugarcane, and sugarbeet, primarily used as food and feed. In order to meet the growing demand for this fuel and decrease competition in the food and biofuel sectors for the same feedstock, other raw materials and process technologies have been intensively studied. Lignocellulosic biomass is one of the most abundant renewable resources, with it being rich in compounds that could be processed into energy, transportation fuels, various chemical compounds, and diverse materials. Bioethanol production from lignocellulosic biomass has received substantial attention in recent decades. This review gives an overview of bioethanol production steps from lignocellulosic biomass and challenges in the production process. The following aspects of bioethanol production are covered here, including pretreatment methods, process strategies, strain development, ethanol isolation and purification, and technical hurdles.

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Section: Liquid Hot Water (Lhw)mentioning

confidence: 99%

The Production of Bioethanol from Lignocellulosic Biomass: Pretreatment Methods, Fermentation, and Downstream Processing

Beluhan,

Mihajlovski,

Šantek

et al. 2023

Energies

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“…The procedure involves the application of water associated with an increase in temperature, drastically reducing the pH of the medium releasing carboxylic acids and intensifying the rupture of the structural matrix of the lignocellulosic biomass. Consequently, there is a significant increase in the accessible surface area, intensifying the action of the enzymes and the fermentation process [108].…”

Section: Other Treatmentsmentioning

confidence: 99%

Polymeric Materials Obtained by Extrusion and Injection Molding from Lignocellulosic Agroindustrial Biomass

Pacheco,

Evangelista-Osorio,

Muchaypiña-Flores

et al. 2023

Polymers

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This review presents the advances in polymeric materials achieved by extrusion and injection molding from lignocellulosic agroindustrial biomass. Biomass, which is derived from agricultural and industrial waste, is a renewable and abundant feedstock that contains mainly cellulose, hemicellulose, and lignin. To improve the properties and functions of polymeric materials, cellulose is subjected to a variety of modifications. The most common modifications are surface modification, grafting, chemical procedures, and molecule chemical grafting. Injection molding and extrusion technologies are crucial in shaping and manufacturing polymer composites, with precise control over the process and material selection. Furthermore, injection molding involves four phases: plasticization, injection, cooling, and ejection, with a focus on energy efficiency. Fundamental aspects of an injection molding machine, such as the motor, hopper, heating units, nozzle, and clamping unit, are discussed. Extrusion technology, commonly used as a preliminary step to injection molding, presents challenges regarding fiber reinforcement and stress accumulation, while lignin-based polymeric materials are challenging due to their hydrophobicity. The diverse applications of these biodegradable materials include automotive industries, construction, food packaging, and various consumer goods. Polymeric materials are positioned to offer even bigger contributions to sustainable and eco-friendly solutions in the future, as research and development continues.

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“…Pre-washing biomass with hot water is considered a promising method for improving the fuel characteristics of biomass, which does not require the use of chemical additives [14,15]. The process of washing with water is carried out at temperatures of up to 240 • C; the duration of the process reaches one hour [15].…”

Section: Ash Componentmentioning

confidence: 99%

Prediction of the Behavior of Sunflower Husk Ash after Its Processing by Various Torrefaction Methods

Isemin

Tabet²,

Nebyvaev

et al. 2022

Energies

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Biomass can be considered an alternative to coal in the production of heat and electricity. Many types of biomass are waste from agriculture and the food industry. This waste is cheap, readily available, and replenished annually. However, most agricultural and food industry wastes (sugar cane pulp, olive and sunflower oil production wastes, straw, etc.) have ash with a low melting point. This leads to a rapid growth of ash deposits on the heating surfaces of boilers; as a result, the actual efficiency of boilers in which waste from agriculture and the food industry is burned is 45–50%. Known biomass pre-treatment technologies that allow for the fuel characteristics of biowaste. For example, leaching of biowaste in water at a temperature of 80–240 °С makes it possible to drastically reduce the content of alkali metal compounds in the ash, the presence of which reduces the melting point of the ash. However, this biomass pre-treatment technology is complex and requires additional costs for drying the treated biomass. We proposed to use torrefaction for pre-treatment of biomass, which makes it possible to increase the heat of combustion of biomass, increase the hydrophobicity of biomass, and reduce the cost of grinding it. However, we are not aware of studies that have studied the effect of torrefaction on the chemical composition of ash from the point of view of solving the problem of preventing the formation of agglomerates and reducing the growth rate of ash deposits on the convective heating surfaces of boilers. In this paper, the characteristics of sunflower husk subjected to torrefaction in an environment of superheated steam at a temperature of 300 °С and in an environment of gaseous products at a temperature of 250 °С are studied. All experiments were conducted using fluidized bed technology. The resulting biochar has a calorific value of 14.8–23% higher than the initial husk. To assess the behavior of sunflower husk ash, predictive coefficients were calculated. Torrefaction of sunflower husks does not exclude the possibility of slagging of the furnace but reduces the likelihood of slagging by 2.31–7.27 times. According to calculations, the torrefaction of sunflower husks reduces the likelihood of ash deposits on the convective heating surfaces of the boiler by 2.1–12.2 times. According to its fuel characteristics, the husk, after torrefaction in an environment of superheated steam, approaches wood waste, i.e., can be burned separately without additives or mixtures with other fuels with refractory ash.

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Liquid Hot Water Pretreatment of Lignocellulosic Biomass at Lab and Pilot Scale

Cited by 27 publications

References 50 publications

The Production of Bioethanol from Lignocellulosic Biomass: Pretreatment Methods, Fermentation, and Downstream Processing

The Production of Bioethanol from Lignocellulosic Biomass: Pretreatment Methods, Fermentation, and Downstream Processing

Polymeric Materials Obtained by Extrusion and Injection Molding from Lignocellulosic Agroindustrial Biomass

Prediction of the Behavior of Sunflower Husk Ash after Its Processing by Various Torrefaction Methods

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