scholarly journals Analysis of Pyrolysis Kinetic Model for Processing of Thermogravimetric Analysis Data

2018 ◽  
Author(s):  
Guodong Jiang ◽  
Liping Wei
Keyword(s):  
Thermogravimetric Analysis ◽  
Kinetic Model ◽  
Analysis Data ◽  
Pyrolysis Kinetic

scholarly journals Prediction of regional agro-industrial wastes characteristics by thermogravimetric analysis to obtain bioenergy using thermal process

2018 ◽  
Vol 37 (1) ◽  
pp. 544-557 ◽  
Author(s):  
Alejandra Saffe ◽  
Anabel Fernandez ◽  
Germán Mazza ◽  
Rosa Rodriguez
Keyword(s):  
Thermogravimetric Analysis ◽  
Analysis Data ◽  
Proximate Analysis ◽  
Industrial Wastes ◽  
Heating Value ◽  
Application Range ◽  
High Heating Value ◽  
One Step ◽  
Standard Techniques

The use of energy from biomass is becoming more common worldwide. This energy source has several benefits that promote its acceptance; it is bio-renewable, non-toxic and biodegradable. To predict its behavior as a fuel during thermal treatment, its characterization is necessary. The experimental determination of ultimate analysis data requires special instrumentation, while proximate analysis data can be obtained easily by using common equipment but, the required time is high. In this work, a methodology is applied based on thermogravimetric analysis, curves deconvolution and empirical correlations for characterizing different regional agro-industrial wastes to determine the high heating value, the contents of moisture, volatiles matter, fixed carbon, ash, carbon, hydrogen, oxygen, lignin, cellulose and hemicellulose. The obtained results are similar to those using standard techniques, showing the accuracy of proposed method and its wide application range. This methodology allows to determine the main parameters required for industrial operation in only in one step, saving time.

Pyrolysis kinetic study of waste milk packets using thermogravimetric analysis and product characterization

2019 ◽  
Vol 21 (6) ◽  
pp. 1350-1360 ◽  
Author(s):  
Gajendra Singh ◽  
Anil Kumar Varma ◽  
Sadiya Almas ◽  
Anusua Jana ◽  
Prasenjit Mondal ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Kinetic Study ◽  
Product Characterization ◽  
Waste Milk ◽  
Pyrolysis Kinetic

scholarly journals Autocatalytic kinetic model for thermogravimetric analysis and composition estimation of biomass and polymeric fractions

Fuel ◽  
2015 ◽  
Vol 148 ◽  
pp. 212-225 ◽  
Author(s):  
A. Cabeza ◽  
F. Sobrón ◽  
F.M. Yedro ◽  
J. García-Serna
Keyword(s):  
Thermogravimetric Analysis ◽  
Kinetic Model

PS-TiO2 Nanocomposites: Thermal Investigations

2011 ◽  
Vol 1312 ◽  
Author(s):  
Rafael Villegas ◽  
Yun Zhai ◽  
Hailan Xu ◽  
Dorina Magdalena Chipara ◽  
David Hui ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Thermogravimetric Analysis ◽  
Mass Loss ◽  
Correlation Coefficient ◽  
Analysis Data ◽  
First Derivative ◽  
Thermal Investigations ◽  
Thermal Stability Of ◽  
Gaussian Line

ABSTRACTNanocomposites of polystyrene loaded with various amounts of anatase (ranging between 0 % wt. and 20 % wt.) have been synthesized and investigated by thermal analysis. The research was focused on the simulation of Thermogravimetric Analysis data, aiming to a refined understanding of the interactions between of polystyrene and TiO2 nanoparticles. The dependence of the first derivative of residual mass on temperature has been used to determine more accurately the temperature at which the mass loss is maxim. Several functions have been used to simulate the dependence of the first derivative of mass loss on the temperature of the sample. The highest correlation coefficient was obtained for the asymmetric Gaussian combination, which connects two halves of a Gaussian line with different linewidth. An increase of the thermal stability of the polymeric matrix upon loading with TiO2 is reported.

scholarly journals Determination of Hemicellulose, Cellulose, and Lignin Content in Different Types of Biomasses by Thermogravimetric Analysis and Pseudocomponent Kinetic Model (TGA-PKM Method)

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1048
Author(s):  
David Díez ◽  
Ana Urueña ◽  
Raúl Piñero ◽  
Aitor Barrio ◽  
Tarja Tamminen
Keyword(s):  
Thermogravimetric Analysis ◽  
Kinetic Model ◽  
Lignin Content ◽  
Low Cost ◽  
Biomass Composition ◽  
Fast Method ◽  
Additional Information ◽  
Extraction And Purification ◽  
Different Types

The standard method for determining the biomass composition, in terms of main lignocellulosic fraction (hemicellulose, cellulose and lignin) contents, is by chemical method; however, it is a slow and expensive methodology, which requires complex techniques and the use of multiple chemical reagents. The main objective of this article is to provide a new efficient, low-cost and fast method for the determination of the main lignocellulosic fraction contents of different types of biomasses from agricultural by-products to softwoods and hardwoods. The method is based on applying deconvolution techniques on the derivative thermogravimetric (DTG) pyrolysis curves obtained by thermogravimetric analysis (TGA) through a kinetic approach based on a pseudocomponent kinetic model (PKM). As a result, the new method (TGA-PKM) provides additional information regarding the ease of carrying out their degradation in comparison with other biomasses. The results obtained show a good agreement between experimental data from analytical procedures and the TGA-PKM method (±7%). This indicates that the TGA-PKM method can be used to have a good estimation of the content of the main lignocellulosic fractions without the need to carry out complex extraction and purification chemical treatments. In addition, the good quality of the fit obtained between the model and experimental DTG curves (R2Adj = 0.99) allows to obtain the characteristic kinetic parameters of each fraction.

Spectral and bonding properties of bis(N,N-disubstituted-dithiocarbamato)iron(III)dihalide complexes studied by experimental and EHMO quantum-chemical methods

1985 ◽  
Vol 63 (11) ◽  
pp. 3249-3255 ◽  
Author(s):  
George A. Katsoulos ◽  
Constantinos A. Tsipis ◽  
Fotios D. Vakoulis
Keyword(s):  
Magnetic Susceptibility ◽  
Thermogravimetric Analysis ◽  
Quantum Chemical ◽  
Analysis Data ◽  
Spectroscopic Methods ◽  
Chemical Methods ◽  
Magnetic Systems ◽  
Quantum Chemical Methods ◽  
Bonding Properties ◽  
New Compounds

A new series of homobinuclear iron(III) halobisdithiocarbamate complexes antiferromagnetically coupled through a molecular halogen bridging unit has been synthesised and studied. The complexes have been characterized chemically and by spectroscopic methods and magnetic susceptibility measurements. The volatility characteristics and thermogravimetric analysis data for the new compounds are also studied. Finally, quantum-chemical calculations have been used to provide a qualitative guide to the possible pathways for the superexchange processes observed in these molecular magnetic systems, as well as to interpret their electronic spectra.

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