Steam explosion and steam extrusion pretreatment as auxiliary methods for concentration enhancement of monosaccharides from hydrolysates based on the selected lignocellulosic materials

Pažitný, Andrej; Halaj, M.; Russ, Albert; Boháček, Štefan; Ihnát, Vladimír; Skotnicová, Ida; Šutý, Štefan

doi:10.1007/s00706-022-02925-9

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…So far, the most suitable solution seems to be steam explosion and steam extrusion, the so-called continuous steam explosion with similar mechanism such as in case of organosolvolysis. The mentioned pretreatment methods are very suitable and promising physicochemical methods that modify lignocellulosic materials with resistant nature (Stankovská et al 2018;Pažitný et al 2021). These methods were originally developed for other purposes e.g., for extrusion of plastics (Huang and Liao 2002) and food products (Menis-Henrique et al 2020).…”

Section: Introductionmentioning

confidence: 99%

New approaches in pretreatment methods of beech particles in enzymatic hydrolysis – effect of impregnation time and reactor selection

Pažitný

Russ

Boháček

et al. 2022

Nova Biotechnol. Chim.

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Waste dendromass is one of the least used types of biomass and together with waste from the harvesting and processing of agricultural crops, belongs to the wastes that have a high potential for the second-generation ethanol production. Mass concentration of biofuel added to fossil fuels is established by law and this concentration is determined within the reference values for each year. For example, for 2021 it was 8.0 % and for years from 2022 to 2030 the value will increase to 8.2 %. Biofuels in the so-called reference value in the total fuel content have been mandatory since 2017, while the specific reference value is calculated from the energy content of the total amount of fuels placed on the market. This paper provides initial considerations and pilot results based on experimental data obtained in our workplace concerning the application potential of selected type of dendromass – beech particles from the point of view of their pretreatment by steam explosion and steam extrusion for potential production of liquid biofuels based on lignocellulosic biomass. We compared temperature courses of the mentioned pretreatment methods and pretreated samples were tested by enzymatic hydrolysis. Enzymatic hydrolysis results showed that steam explosion and steam extrusion led to concentration enhancement of fermentable monosaccharides compared to original samples depending on used pretreatment method.

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Section: Introductionmentioning

confidence: 99%

New approaches in pretreatment methods of beech particles in enzymatic hydrolysis – effect of impregnation time and reactor selection

Pažitný

Russ

Boháček

et al. 2022

Nova Biotechnol. Chim.

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Optimisation study of Ulmus pumila woody biomass fractionation by steam explosion for bioproducts production

Susmozas,

Manzanares,

Negro

et al. 2023

Wood Sci Technol

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Ulmus pumila represents a promising lignocellulosic biomass source for biofuels and bioproducts production since it can grow in low rainfall and extreme temperature zones. A first step in the conversion process is biomass fractionation to enhance the performance of the hydrolysis and subsequent biological conversion steps. The aim of this work is to optimise the main variables (temperature, residence time and the addition or not of sulphuric acid) of steam explosion to pretreat Ulmus pumila biomass. The optimal conditions to maximise both glucose and xylose recovery were 204.8 °C and 30 mg H2SO4/g biomass, obtained through a multilevel factorial design of experiments. Additionally, enzymatic hydrolysis using high solid loads (15% and 20% (w/w)) and different enzyme doses was studied. As a result, steam explosion at optimal conditions followed by enzymatic hydrolysis with 20% solid loading and 60 mg protein/g cellulose of enzyme allow the recovery of 70% of the potential sugars.

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Steam explosion and steam extrusion pretreatment as auxiliary methods for concentration enhancement of monosaccharides from hydrolysates based on the selected lignocellulosic materials

Cited by 2 publications

References 39 publications

New approaches in pretreatment methods of beech particles in enzymatic hydrolysis – effect of impregnation time and reactor selection

New approaches in pretreatment methods of beech particles in enzymatic hydrolysis – effect of impregnation time and reactor selection

Optimisation study of Ulmus pumila woody biomass fractionation by steam explosion for bioproducts production

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