Abstract
In the present study, the kinetic parameters associated with pyrolysis and co-pyrolysis of mango seed kernel (MSK) and mango seed shell (MSS) with polyethylene terephthalate (PET) were determined using Coats–Redfern (CR) method. The degradation kinetics of individual biomass such as MSK, MSS and PET was studied at a heating rate of 15, 20 and 25 °C min−1 using thermogravimetric analysis (TG). The kinetic study of co-pyrolysis of MSK and PET; MSS and PET; MSK and MSS at various proportions were studied at the heating rate of 15 °C min−1. Assuming different reaction orders and using CR method, the kinetic parameters were determined and compared. Correlation coefficient (R 2) was used as the basis for comparison of the kinetic parameters and to determine the order of the reaction. This paper also characterizes the raw materials using proximate and FTIR analysis. It was observed that the order of the reaction varied with the primary, secondary and tertiary stage of degradation. The order of the reaction depends on the composition of the raw material and may vary from 0.1 to 3.
Abbreviations
- A :
-
Pre-exponential factor
- E :
-
Activation energy (kJ mol−1)
- H :
-
Heating rate
- R :
-
Universal gas constant (J mol−1 K−1)
- T :
-
Temperature (K)
- W :
-
Sample mass
- X :
-
Conversion
- t :
-
Time (s)
- MSK:
-
Mango seed kernel
- MSS:
-
Mango seed shell
- PET:
-
Polyethylene terephthalate
- TG:
-
Thermogravimetric analysis
- FTIR:
-
Fourier transform infrared spectroscopy
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Authors acknowledge the analytical facilities at the analytical laboratory at Department of Chemical Engineering, IIT Guwahati, India.
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Ganeshan, G., Shadangi, K.P. & Mohanty, K. Degradation kinetic study of pyrolysis and co-pyrolysis of biomass with polyethylene terephthalate (PET) using Coats–Redfern method. J Therm Anal Calorim 131, 1803–1816 (2018). https://doi.org/10.1007/s10973-017-6597-5
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DOI: https://doi.org/10.1007/s10973-017-6597-5