Pyrolysis Kinetic Modelling of Wheat Straw from the Pannonian Region

Pešenjanski, Ivan; Miljković, Biljana; Vićević, Marija

doi:10.1155/2016/9534063

Cited by 10 publications

(7 citation statements)

References 16 publications

(27 reference statements)

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“…The proximate analysis of rice straw is compared with wheat straw and sugarcane bagasse (Table ). It showed that ash and silica content of rice straw is significantly higher in comparison to wheat straw and sugarcane bagasse …”

Section: Rice Straw Structural Constituents and Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Satlewal

Agrawal

Bhagia

et al. 2017

Biofuels Bioprod Bioref

142

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The surplus availability of rice straw, its limited usage, and environmental pollution caused by its ineffi cient burning has fostered research for its valorization to biofuels. This review elucidates the current status of rice straw potential around the globe along with recent advances in revealing the critical factors responsible for its recalcitrance and chemical properties. The role and accumulation of high silica content in rice straw has been elucidated with its impact on enzymatic hydrolysis in a biorefi nery environment. The correlation of different pre-treatment approaches in modifying the physiochemical properties of rice straw and improving the enzymatic accessibility has also been discussed. This study highlights new challenges, resolutions, and opportunities for rice straw based biorefi neries.

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Section: Rice Straw Structural Constituents and Characteristicsmentioning

confidence: 99%

“…It showed that ash and silica content of rice straw is signifi cantly higher in comparison to wheat straw and sugarcane bagasse. [47][48][49][50][51][52][53][54]…”

Section: Rice Straw Structural Constituents and Characteristicsmentioning

confidence: 99%

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Satlewal

Agrawal

Bhagia

et al. 2017

Biofuels Bioprod Bioref

142

View full text Add to dashboard Cite

show abstract

“…Pešenjanski et al [4] used a one-step global reaction to describe the thermal degradation of wheat straw samples. The influence of different factors was investigated, such as particle size, humidity levels and the heating rate in the kinetics of devolatilization.…”

Section: Introductionmentioning

confidence: 99%

Effect of Operating Parameters on Agricultural Biomass Mixture Pyrolysis Process in a Batch Reactor

Miljković

2023

Period. Polytech. Chem. Eng.

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Many phenomena affect devolatilization of biomass particles, including mass and heat transfer, chemical reactions and physical transformation. Mathematical models that are capable to describe pyrolysis phenomena can greatly assist the large-scale development and optimization of pyrolysis processes, but to be implemented into large-scale simulation the models need to be simplified at a certain degree. In the present study, an existing mathematical model is used to describe the pyrolysis of a single particle of biomass. It couples the heat transfer equations with the chemical kinetics equations. The common Euler explicit method is used for solving the heat transfer equation and the two-step pyrolysis kinetics equations. The model equation is solved for a sphere particle with a radius of 0.001 m and temperature ranging from 300 to 923 K. An original numerical model for the pyrolysis of agricultural biomass mixture is proposed and relevant equations solved using original program realized in MATLAB. Simplified particle model was validated with the experimental data in a non-isothermal pyrolysis reactor. The sample was heated in the temperature range of 300–923 K at average heating rates of 21, 30 and 54 K/min. The model results showed reasonable agreement with experiments. The difference (between the experimental and model results) is slightly more prominent with decreasing heating rate (21 and 30 K/min), but model results are in much better agreement with the experimental date for higher heating rate (54 K/min). It is demonstrated that a constitutive equation can be used to express devolatilization rate for higher heating rates.

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“…Investigations concerning the beet pulp and straw pyrolysis were carried out using different methods. Most of them were performed using laboratory analytical equipment, where biomass weight micro samples were used as the substrate [ 28 , 29 , 30 ]. Additionally, using micro samples and applying the Thermogravimetric Analysis (TGA) method, the kinetics of pyrolysis of beet pulp, separated or mixed with lignite, was studied [ 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Batch Pyrolysis and Co-Pyrolysis of Beet Pulp and Wheat Straw

et al. 2022

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Granulated beet pulp and wheat straw, first separately and then mixed in a weight ratio of 50/50%, underwent a pyrolysis process in a laboratory batch generator with process temperatures of 400 and 500 °C. The feedstock’s chemical composition and the pyrolysis products’ chemical composition (biochar and pyrolysis gas) were analysed. A synergistic effect was observed in the co-pyrolysis of the combined feedstock, which occurred as an increase the content of the arising gas in relation to the total weight of the products. and as a reduction of bio-oil content. The maximum gas proportion was 21.8% at 500 °C and the minimum between 12.6% and 18.4% for the pyrolysis of individual substrates at 400 °C. The proportions of the gases, including CO, CO2, CH4, H2, and O2, present in the resulting synthesis gases were also analysed. The usage of a higher pyrolysis final temperature strongly affected the increase of the CH4 and H2 concentration and the decrease of CO2 and CO concentration in the pyrolysis gas. The highest percentage of hydrogen in the synthesis gas, around 33%vol, occurred at 500 °C during co-pyrolysis.

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Pyrolysis Kinetic Modelling of Wheat Straw from the Pannonian Region

Cited by 10 publications

References 16 publications

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Rice straw as a feedstock for biofuels: Availability, recalcitrance, and chemical properties

Effect of Operating Parameters on Agricultural Biomass Mixture Pyrolysis Process in a Batch Reactor

Batch Pyrolysis and Co-Pyrolysis of Beet Pulp and Wheat Straw

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