Modelling of pretreatment and saccharification with different feedstocks and kinetic modeling of sorghum saccharification

Prathyusha, N.; Kamesh, Reddi; Rani, K. Yamuna; Sumana, C.; Sridhar, S.; Prakasham, R. S.; Yashwanth, V.V.N.; Sheelu, Gurrala; Kumar, M. Pradeep

doi:10.1016/j.biortech.2016.09.007

Cited by 16 publications

(7 citation statements)

References 19 publications

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“…But the models built are used to find the degree of conversion possible only and not the rate of reaction. So they have developed a kinetic model for sorghum saccharification to study conversion rate which can be used for design purposes and is expressed as a first-order differential equation as in equation (3) [ 117 ].

where “ S ( t ) represents the Sorghum biomass saccharification conversion at a given time t , and.…”

Section: Kinetic Model Studiesmentioning

confidence: 99%

“…S max represents the maximum conversion and

is a time constant for the process”. This model has an analytic solution that can be written [ 117 ] as

…”

Section: Kinetic Model Studiesmentioning

confidence: 99%

“…Authors have followed the approach of developing a specific model for a range of operating parameters for single and multiple substrates and the value of maximum conversion obtained is used for studying the rate of reaction for individual substrates [ 117 ]. In all the models developed (all the equations not shown), author has assumed that feedstock consists of cellulose, hemi-cellulose, lignin only.…”

Section: Kinetic Model Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Different pre-treatments and kinetic models for bioethanol production from lignocellulosic biomass: A review

Pendse

Deshmukh

Pande

2023

Heliyon

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where “ S ( t ) represents the Sorghum biomass saccharification conversion at a given time t , and.…”

Section: Kinetic Model Studiesmentioning

confidence: 99%

“…S max represents the maximum conversion and

is a time constant for the process”. This model has an analytic solution that can be written [ 117 ] as

…”

Section: Kinetic Model Studiesmentioning

confidence: 99%

Section: Kinetic Model Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Different pre-treatments and kinetic models for bioethanol production from lignocellulosic biomass: A review

Pendse

Deshmukh

Pande

2023

Heliyon

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“…Alkaline pretreatments with sodium or calcium hydroxides (NaOH or Ca(OH)2) present delignificant effects, remove the xylan side chains, reduce the cellulose crystallinity and increase the porosity, enhancing the substrate susceptibility to the enzymatic attack [17]. Alkaline pretreatments under mild conditions have demonstrated high lignin reduction and remarkable sugar release in different lignocellulosic sources, such as wheat straw [3] and sweet sorghum bagasse [18].…”

Section: Introductionmentioning

confidence: 99%

Biomass Sorghum: Effect of Acid, Basic and Alkaline Peroxide Pretreatments on the Enzymatic Hydrolysis and Ethanol Production

Santos

Travaini

Lorenzo-Hernando

et al. 2021

Braz. arch. biol. technol.

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This study evaluated the effects of three chemical pretreatments of biomass sorghum (BS): dilute alkaline (PTA1 and PTA2), dilute acid (PTB1 and PTB2) and alkaline hydrogen peroxide (PTC1 and PTC2) in the enzymatic hydrolysis and ethanol production. Among the six investigated conditions, the pretreatment with 7.36% H2O2 (PTC2) was the most efficient in the lignin removal and preservation of the polysaccharide fraction. After the enzymatic hydrolysis, increases in the glucose and xylose concentrations were observed in the pretreated BS hydrolysates, mainly in PTB1 and PTC1. All the hydrolysates obtained low concentrations of inhibitors. In the alcoholic fermentations with Pichia stiptis, the greatest ethanol yield was HIGHLIGHTS  Alkaline, acid and alkaline peroxide pretreatments were evaluated in biomass sorghum hydrolysis. Acid and H2O2 pretreatments were the best in holocellulose protection and lignin removal. Highest monosaccharide yields were in hydrolysis of PTB1 (HCl 0.34%) and PTC1 (5% H2O2).  Greatest ethanol yield was obtained in PTB1 hydrolysate (16.15%).dos Santos, B.V; et al.

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“…Considerable interest in kinetics of biotechnological processes stems from the necessity to scientifically predict the complicated system in a production environment (Ye and Berson 2011;Fan et al 2015;Peri et al 2007;Prathyusha et al 2016). The topicality of investigating the enzymatic hydrolysis kinetics of substrates is governed by the necessity to predict the reactivity of pretreated lignocellulosic feedstock (Gonzalez et al 1989;Marcos et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Enzyme kinetics of cellulose hydrolysis of Miscanthus and oat hulls

et al. 2017

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Experiments were done to model enzymatic hydrolysis of and oat hulls treated with dilute solutions of nitric acid and sodium hydroxide in direct and reverse sequences. The enzymatic hydrolysis kinetics of the substrates was studied at an initial solid loading from 30 to 120 g/L. The effects of feedstock type and its pretreatment method on the initial hydrolysis rate and reducing sugar yield were evaluated. The fitting results by the developed models showed good agreement with the experimental data. These models designed for developing the production technology of concentrated glucose solutions can also be applied for glucose fermentation into ethanol. The initial solid loading of 60-90 g/L provides the reducing sugar concentration of 40-80 g/L necessary for ethanol synthesis. The kinetic model can also be applied to investigate enzymatic hydrolysis of other substrates (feedstock type, pretreatment method) under the similar conditions used herein, with adjusted empirical coefficient values.

show abstract

Modelling of pretreatment and saccharification with different feedstocks and kinetic modeling of sorghum saccharification

Cited by 16 publications

References 19 publications

Different pre-treatments and kinetic models for bioethanol production from lignocellulosic biomass: A review

Different pre-treatments and kinetic models for bioethanol production from lignocellulosic biomass: A review

Biomass Sorghum: Effect of Acid, Basic and Alkaline Peroxide Pretreatments on the Enzymatic Hydrolysis and Ethanol Production

Enzyme kinetics of cellulose hydrolysis of Miscanthus and oat hulls

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