Kinetic analysis and thermal degradation study on wheat straw and its biochar from vacuum pyrolysis under non-isothermal condition

Rathore, N.S.; Pawar, Ashish; Panwar, N. L.

doi:10.1007/s13399-021-01360-w

Cited by 31 publications

(7 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results for change in enthalpy, entropy, and Gibbs free energy were also obtained in pyrolysis of agricultural residues such as wheat straw (Rathore et al 2021), black gram (Gajera and Panwar, 2019), rice bran, and rice straw , Peanut shell, (Varma et al 2020) etc. In addition, Table 4 compares the thermodynamic parameters and activation energy values obtained in the present experiment with other agricultural waste.…”

Section: << Table 3 >>supporting

confidence: 73%

“…Similar observations for activation energy were also reported in previous literature for pyrolysis of agricultural residues such as soybean straw, peanut shell, wheat straw, etc. (Huang et al 2016;Varma et al 2020;Rathore et al 2021) In addition, for all three models the values of R 2 were found maximum for all degree of conversion signifies that obtained activate energy values are more accurate and reliable.…”

Section: Evaluation Of Activation Energy and Pre-exponential Factormentioning

confidence: 54%

See 1 more Smart Citation

Influence of Model Free Methods on Pyrolysis Kinetics and Thermodynamic Parameters of Soybean Straw

Jagtap

Kalbande

2021

Preprint

View full text Add to dashboard Cite

Thermochemical conversion of surplus agro-residue for energy generation has gained renewed attention, due to its abundant availability throughout the world. Although, it still needs the thermodynamic and pyrolysis kinetic background, that play important role for the effectual design of thermo-chemical conversion reactors such as pyrolyzers, gasifiers, etc. In the present study, thermal profile (mass loss vs. temp) for soybean straw was examined at 20, 30, 40 oC/min heating rates under a non-isothermal condition in an oxygen limiting environment through a thermogravimetric analyzer (TGA). The pyrolysis kinetic parameters (activation energy and pre-exponential factor) were evaluated by applying iso-conversional model-free methods such as Flynn–Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), and Starink. The average values of activation energy for KAS, FWO and Starink models were recorded to be around 150, 155 and 147 kJ/mol, respectively. Thermodynamic variables (change of enthalpy, entropy, and Gibbs free energy) for soybean straw were also computed. The average value of enthalpy for FWO, KAS, Starink were recorded to be 151, 147, and 142 kJ/mol, respectively. The obtained simulation findings of pyrolysis kinetic and thermodynamic variables are in good agreement.

show abstract

Section: << Table 3 >>supporting

confidence: 73%

Section: Evaluation Of Activation Energy and Pre-exponential Factormentioning

confidence: 54%

Influence of Model Free Methods on Pyrolysis Kinetics and Thermodynamic Parameters of Soybean Straw

Jagtap

Kalbande

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…These studies indicate that the pyrolysis process had no effect on the characteristics of biochar after a period of time [44]. A similar graph pattern was found by [45] in their kinetic and thermal study.…”

Section: Thermogravimetric Analysis Of Bamboo and Bamboo Biocharsupporting

confidence: 77%

Experimental Investigation of Kinetic Parameters of Bamboo and Bamboo Biochar Using Thermogravimetric Analysis Under Non-isothermal Conditions

2022

Self Cite

View full text Add to dashboard Cite

The subject of this research is the thermogravimetric analysis of bamboo and bamboo biochar in an inert environment at 10, 20, and 30 °C/min. The physicochemical characterizations of bamboo and bamboo biochar were carried out as per the standard methods. Vacuum pyrolysis was used for the bamboo biochar. The FWO (Flynn-Wall-Ozawa) and KAS (Kissinger-Akahira-Sunose), methods determined thermodynamic and kinetic parameters within the active pyrolysis zone. Thermal degradation bamboo biomass undergoes several steps of loss of mass, including moisture loss, passive and active pyrolysis. Between 180 °C and 395 °C, the active pyrolysis zone accounted for 50 to 55 percent of the mass loss. For FWO and KAS models, bamboo biochar had lower activation energy values (99.23 and 96.07 kJ/mol) than bamboo biomass (262.5303 and 266.62 kJ/mol). The findings of the study for bamboo and its biochar revealed a significant opportunity in the agro industry for designing and building pyrolysis reactors for long-term biofuel generation.

show abstract

“…However, the interaction of hemicellulose and cellulose has the least role in the complexity of the pyrolysis process and major contribution to the generation and distribution of pyrolytic products [36]. Therefore, the key devolatization of biomass is extensively investigated by scientists for the development of the pyrolytic process and related reactor design which requires a complete explanation of the pyrolysis mechanism [5,31,37].…”

Section: Isoconversional Kinetic Analysismentioning

confidence: 99%

Pyrolytic conversion of a novel biomass Ficus natalensis barkcloth: physiochemical and thermo-kinetic analysis

Farooq

Ashraf

Aslam

et al. 2021

Biomass Conv. Bioref.

View full text Add to dashboard Cite

The over reliance on fossil fuels for power generation has resulted in an alarming depletion of petrochemical crude oil reserves, that also is the cause of elevated greenhouse gas effects. Biomass resources are considered potential fuels for the future on account of their renewable and carbon-neutral features. This study presents the physicochemical characteristics and pyrolysis behavior of a novel biomass Ficus natalensis barkcloth (FNB). Physicochemical characterization indicated that the FNB has 74.4% volatile matter contents, a higher heating value (HHV) of 13.8 MJ/kg, and it has 67% cellulose as its main chemical constituent. Thermogravimetric analysis (TGA) showed that major decomposition occurred at the core devolatization (235℃ to 410 ℃) under inert thermal degradation. Model-free and model-fitting kinetic methods were applied to TGA data to compute the kinetics triplet for FNB biomass. The average activation energy (E a ) of the FNB pyrolysis process was determined to be 168 kJ/mol. The compensation effects between pre-exponential factor (A) and E a detected a rise in collision intensity for the pyrolysis of FNB at high heating rates. The Criado master plot results showed that the pyrolysis of FNB followed first-order reaction (F 1 ) mechanism. The thermodynamic parameters, such as change in enthalpy (ΔH), Gibbs free energy (ΔG), and entropy (ΔS), were also calculated and compared with kinetics parameters to evaluate the evolution of thermal degradation. Physiochemical and thermo-kinetic analysis of FBN revealed its comparable bioenergy potential with established biomasses.

show abstract

Kinetic analysis and thermal degradation study on wheat straw and its biochar from vacuum pyrolysis under non-isothermal condition

Cited by 31 publications

References 50 publications

Influence of Model Free Methods on Pyrolysis Kinetics and Thermodynamic Parameters of Soybean Straw

Influence of Model Free Methods on Pyrolysis Kinetics and Thermodynamic Parameters of Soybean Straw

Experimental Investigation of Kinetic Parameters of Bamboo and Bamboo Biochar Using Thermogravimetric Analysis Under Non-isothermal Conditions

Pyrolytic conversion of a novel biomass Ficus natalensis barkcloth: physiochemical and thermo-kinetic analysis

Contact Info

Product

Resources

About