Hydrothermal processing of biomass for anaerobic digestion – A review

Ahmad, Fiaz; Silva, Edson Luiz; Varesche, Maria Bernadete Amâncio

doi:10.1016/j.rser.2018.09.008

Cited by 157 publications

(63 citation statements)

References 205 publications

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“…The maximum concentration of water-soluble sugars was achieved in the LP after the hydrothermal treatment at 120 • C, where it obtained a value around 15 times higher than that of the untreated RE, i.e., 21,571 ± 93 mg/kg RE and 1378 ± 10 mg/kg RE, respectively (Figure 1). The increase in the concentration with respect to the untreated RE may be due to the solubilization of sugars from lignocellulosic matter during the hydrothermal treatments [25,39,40]. However, for temperatures above 120 • C, it is likely that sugars were degraded into other compounds such as hydroxymethylfurfural (HMF), which could explain the decrease in the concentration with respect to the maximum achieved at 120 • C [21,26].…”

Section: Characterization Of the Untreated Raspberry Extrudate And Thmentioning

confidence: 99%

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

et al. 2020

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Raspberry extrudate residue has bioactive compounds in its matrix that are considered high-added value compounds. In the present study, different hydrothermal treatments were carried out using different operational systems, temperatures and times to solubilize raspberry extrudate in order to obtain these bioactive compounds (i.e., sugars and phenolic compounds). Hydrothermal treatment conditions were assessed in the range of 60 °C to 210 °C, with increments of 30 °C. The hydrothermal treatment at 210 °C for 5 min with direct steam and decompression was the most efficient process based on the solubilization of sugars and phenols, as well as on the antioxidant capacity of the products recovered in the liquid phase after treatment. Under these conditions, the concentration of soluble phenols was more than double the concentration in the raw raspberry extrudate, with more than 5000 mg phenols per kilogram of raspberry extrudate. The obtained values demonstrate the potential of applying this treatment for recovering valuable bioactive compounds from raspberry extrudate.

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Section: Characterization Of the Untreated Raspberry Extrudate And Thmentioning

confidence: 99%

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

et al. 2020

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“…1 On the other hand, lignocellulosic biomass (LCB) is the most available carbon resource generated on earth and is considered a safe alternative to petroleum-based fuels, equivalent to zero emission and a renewable energy resource for the production of biofuels and bioproducts. 2 In recent years, Agave has emerged as a potential bioenergy feedstock in Mexico due to their advantageous features (e.g. low water requirements, high productivity up to 44 ton per ha per year, and drought resistance) with an estimated productivity of 11.4 Â 10 5 tons in 2018 for Agave tequilana, from which approximately 40% were converted to bagasse.…”

Section: Introductionmentioning

confidence: 99%

Bioderived ionic liquid-based pretreatment enhances methane production from Agave tequilana bagasse

et al. 2020

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“…Integrated biorefinery, which comprises the conversion of polysaccharides to low-molecular-weight carbohydrates [2][3][4] and the use of lignin as a component of high-energy fuel [5][6][7] or core-shell-structured sorbents with humic acids [8], is the most promising green approach in the refinery of plant biomass. Because of its complex supramolecular structure, the lignocellulosic biomass requires mechanical [9][10][11], thermal [12][13][14] or chemical pretreatment [15][16][17]. The properly selected pretreatment method has a favorable effect on the efficiency of subsequent processes, since it modifies the material structure, enhances the availability of the target components and the specific surface area of particles, as well as reduces cellulose crystallinity.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass

et al. 2020

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The cooperative thermomechanical properties of plant-derived polymers have been studied insufficiently, although this feedstock has a very high potential. In the present paper, we analyzed the changes in the structure and physicochemical properties of lignin-rich biomass induced by thermomechanical pretreatment. Low-temperature treatment allows one to retain the original supramolecular structure of the cell walls, while an appreciably high disintegration degree is reached. This increases the reactivity of the material in the subsequent heterogeneous reactions. Mechanical pretreatment at medium temperatures (10 °C), when almost all cell wall polymers except for low-molecular-weight lignin are in the glassy state, enhances the mobility of cell wall polymers and causes sufficient cellulose disordering, while the specific surface area is not significantly increased. High-temperature pretreatment of reed biomass is accompanied by pore formation and lignin release from the cell wall structure, which opens up new prospects for using this biomass as a matrix to produce core–shell-structured sorbents of heavy metals. The energy consumed by mechanochemical equipment for the activation of reed biomass was determined.

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Hydrothermal processing of biomass for anaerobic digestion – A review

Cited by 157 publications

References 205 publications

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

Solubilization of Phenols and Sugars from Raspberry Extrudate by Hydrothermal Treatments

Bioderived ionic liquid-based pretreatment enhances methane production from Agave tequilana bagasse

The Effect of Thermomechanical Pretreatment on the Structure and Properties of Lignin-Rich Plant Biomass

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