Thermogravimetric kinetic study of agricultural residue biomass pyrolysis based on combined kinetics

Wang, Xun; Hu, Mian; Hu, Wanyong; Chen, Zhihua; Liu, Shiming; Hu, Zhiquan; Xiao, Bo

doi:10.1016/j.biortech.2016.07.136

Cited by 151 publications

(85 citation statements)

References 33 publications

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“…The second peak is the highest peak with a weight loss rate of 26.18 g/min at 331.05°C. Similar two peaks in Stage II were also obtained during thermal decomposition of Chlorella vulgaris, one peak in Zone I and one peak in Zone 2 (Wang et al 2016). Figure 6 illustrates the DTG curve for heating rate from 10 to 50°C/min.…”

Section: Tg-dtg Curvessupporting

confidence: 68%

“…To understand the occurring process in the picture, the curve is divided into three stages. (Wang et al 2016). In SPR pyrolysis, it can be seen that in Stage I for temperature 120-200°C, at 10.45-13.5 minutes, the curve forms a flat line because at 120°C the temperature is kept constant for 5 minutes.…”

Section: Tg Curvesmentioning

confidence: 92%

“…Following the pyrolysis is the gasification in Stage III occurring in endothermic condition, with 2 peaks at 632.64 and 689.16°C and heat requirement of 4.02 and 28.88 MW, respectively. As comparison, thermal decomposition of Chlorella vulgaris with 10°C/min heating rate produces one low endothermic peak in Stage I, one strong exothermic peak in Stage II, and one strong peak in Stage III (Wang et al 2016). Differences in the number of peaks between SPR and Chlorella vulgaris can be due to differences in heating rate as well as the O, protein, carbohydrate and lipid content.…”

Section: Tg Curvesmentioning

confidence: 98%

“…Thermal Gravimetric (TG), Differential Thermal Gravimetric (DTG), and Differential Thermal Analysis (DTA) methods are very important in investigating the kinetics and thermal decomposition characteristics of biomass in a thermochemical conversion process (Wang et al 2016). These methods have a high accuracy to study the degradation conditions in kinetic regime (Li et al 2016).…”

Section: Introductionmentioning

confidence: 99%

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Thermal Decomposition and Kinetic Studies of Pyrolysis of Spirulina Platensis Residue

Jamilatun

Budhijanto

Rochmadi

et al. 2017

Int. J. Renew. Energy Dev.

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Analysis of thermal decomposition and pyrolisis reaction kinetics of Spirulina platensis residue (SPR) was performed using Thermogravimetric Analyzer. Thermal decomposition was conducted with the heating rate of 10, 20, 30, 40 and 50oC/min from 30 to 1000oC. Thermogravimetric (TG), Differential Thermal Gravimetric (DTG), and Differential Thermal Analysis (DTA) curves were then obtained. Each of the curves was divided into 3 stages. In Stage I, water vapor was released in endothermic condition. Pyrolysis occurred in exothermic condition in Stage II, which was divided into two zones according to the weight loss rate, namely zone 1 and zone 2. It was found that gasification occurred in Stage III in endothermic condition. The heat requirement and heat release on thermal decomposition of SPR are described by DTA curve, where 3 peaks were obtained for heating rate 10, 20 and 30°C/min and 2 peaks for 40 and 50°C/min, all peaks present in Zone 2. As for the DTG curve, 2 peaks were obtained in Zone 1 for similar heating rates variation. On the other hand, thermal decomposition of proteins and carbohydrates is indicated by the presence of peaks on the DTG curve, where lignin decomposition do not occur due to the low lipid content of SPR (0.01wt%). The experiment results and calculations using one-step global model successfully showed that the activation energy (Ea) for the heating rate of 10, 20, 30, 40 and 50oC/min for zone 1 were 35.455, 41.102, 45.702, 47.892 and 47.562 KJ/mol, respectively, and for zone 2 were 0.0001428, 0.0001240, 0.0000179, 0.0000100 and 0.0000096 KJ/mol, respectively.Keywords: Spirulina platensis residue (SPR), Pyrolysis, Thermal decomposition, Peak, Activation energy.Article History: Received June 15th 2017; Received in revised form August 12th 2017; Accepted August 20th 2017; Available onlineHow to Cite This Article: Jamilatun, S., Budhijanto, Rochmadi, and Budiman, A. (2017) Thermal Decomposition and Kinetic Studies of Pyrolysis of Spirulina platensis Residue, International Journal of Renewable Energy Development 6(3), 193-201.https://doi.org/10.14710/ijred.6.3.193-201

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Section: Tg-dtg Curvessupporting

confidence: 68%

Section: Tg Curvesmentioning

confidence: 92%

Section: Tg Curvesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal Decomposition and Kinetic Studies of Pyrolysis of Spirulina Platensis Residue

Jamilatun

Budhijanto

Rochmadi

et al. 2017

Int. J. Renew. Energy Dev.

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“…[6][7][8][9][10][11][12][13] Thermogravimetric analysis can accurately determine the pyrolysis properties and kinetic parameters of fuels; therefore, this method is widely used for this purpose. [6][7][8][9][10][11][12][13] Thermogravimetric analysis can accurately determine the pyrolysis properties and kinetic parameters of fuels; therefore, this method is widely used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis kinetics of a Wangqing oil shale using thermogravimetric analysis

Hua

Wang

Jia

et al. 2019

Energy Science & Engineering

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A thermogravimetric analyzer was used to study the pyrolysis characteristics of an oil shale at different heating rates. Friedman, Flynn–wall–Ozawa (FWO), and distributed activation energy model (DAEM) methods were used to calculate the kinetic parameters of low‐temperature pyrolysis of oil shale. The results show that as the heating rate increases, (a) the initial pyrolysis temperature, peak temperature, and final pyrolysis temperature of oil shale shift toward the high‐temperature region, (b) the range of devolatilization temperature increases, and (c) the peak value of oil shale weight loss increases. The apparent activation energies calculated using the FWO and Friedman methods change with the conversion rate, and the average activation energies are 233.71 and 234.61 kJ/mol, respectively. Kinetic parameters obtained from the DAEM calculation of low‐temperature pyrolysis of oil shale have energy compensation effects. By combining F‐test and quantitative criterion test, it was found that the logistic DAEM model is suitable for solving oil shale kinetic parameters. The activation energy of low‐temperature pyrolysis of oil shale is 238.67 kJ/mol, and the reaction order n is 1.

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Revealing low temperature microwave‐assisted pyrolysis kinetic behaviors and dielectric properties of biomass components

et al. 2018

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The kinetic characteristics of microwave-assisted pyrolysis (MAP) of biomass components were investigated in a selfdesigned microwave thermogravimetric analysis using the KAS model and the master plot method. Compared with conventional pyrolysis, the initial decomposition temperatures of biomass components were reduced by 50-1008C and the fastest weight loss regions were shifted to lower temperatures. The average apparent activation energies of cellulose, hemicellulose, and lignin were 47.82, 44.81, and 51.54 kJ/mol, respectively. Analysis with master plot method suggested the MAP of cellulose followed the 2-D diffusion reaction model, while hemicellulose and lignin could be interpreted by third orderbased and 3-D diffusion model. The change of dielectric properties was consistent with the weight loss behaviors of biomass components during the pyrolysis process. The increase of dielectric properties with temperature can lead to a thermal gradient and "hot spots" within biomass, which accelerated the pyrolysis process at low temperatures and reduced the apparent activation energy.

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Thermogravimetric kinetic study of agricultural residue biomass pyrolysis based on combined kinetics

Cited by 151 publications

References 33 publications

Thermal Decomposition and Kinetic Studies of Pyrolysis of Spirulina Platensis Residue

Thermal Decomposition and Kinetic Studies of Pyrolysis of Spirulina Platensis Residue

Pyrolysis kinetics of a Wangqing oil shale using thermogravimetric analysis

Revealing low temperature microwave‐assisted pyrolysis kinetic behaviors and dielectric properties of biomass components

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