Thermogravimetric Analysis and Characterisation of Yard Waste as a Feedstock to Gasification Process

2013 ◽  
Author(s):  
Anjireddy Bhavanam ◽  
R. C. Sastry
Keyword(s):  
Thermo Gravimetric Analysis ◽  
Thermal Conversion ◽  
Inert Atmosphere ◽  
Thermochemical Conversion ◽  
Gravimetric Analysis ◽  
Heating Rates ◽  
Thermo Gravimetric ◽  
Yard Waste ◽  
Gasification Process ◽  
Institute Of Technology

Gasification has great potential to make use of the biomass and wastes as a source for energy among various thermochemical conversion processes. The aim of this work is to study the suitability of yard waste for energy conversion using gasification process by Thermo gravimetric analysis. Yard waste (consisting of leaves, twigs and grass clippings) is collected from the National Institute of Technology Warangal. It is then dried and ground to a particle size of less than 250μm for thermo gravimetric study. Before going to thermo gravimetric analysis; the sample is analyzed to measure the main properties that affect thermal conversion. Moisture content present in the sample is determined by the oven drying method. Proximate is done according to standard ASTM test methods and ultimate analysis is conducted using elemental analyzer. Finally thermo gravimetric analyses is performed at various heating rates of 10, 30, and 50°Cmin−1 in nitrogen (inert) and air (oxidizing) atmospheres. The weight losses of yard waste in inert atmosphere occur in three stages and in air it occurs in four stages.

Thermo-Gravimetric Analysis (TGA) of Combustion and Gasification of Styrene-Butadiene Copolymer (SBR)

2005 ◽  
Author(s):  
Marco J. Castaldi ◽  
Eilhann Kwon
Keyword(s):  
Thermo Gravimetric Analysis ◽  
Combustion Efficiency ◽  
Unexpected Result ◽  
Gravimetric Analysis ◽  
Heating Rates ◽  
Thermo Gravimetric ◽  
Pure Nitrogen ◽  
Rubber Waste ◽  
Styrene Butadiene ◽  
Sample Carrier

An investigation has been initiated to determine the effects of various atmospheres (6.9% O2/N2, 21% O2/N2 (air), 30% O2/N2, 3% H2/N2 and pure N2) on the efficiency of gasifying or combusting rubber waste to produce synthesis gas or generate steam or power. This paper reports on the findings from a series of TGA experiments at various heating rates on styrene-butadiene copolymer (SBR), which is the main starting component for tire manufacturing. The results indicate that oxygen enhanced atmospheres have a significant effect on increasing combustion efficiency at the tested heating rates. A hydrogen-spiked atmosphere, surprisingly, did not have a significant effect on the gasification rates of SBR at any heating rate; in addition, this atmosphere resulted in a carbon residual that remained in the sample carrier, something that was not observed in the other atmospheres, including pure nitrogen. An unexpected result of the N2-O2 tests was the development of a plateau in the mass-loss versus temperature curves, at temperatures near 500°C.

Pyrolysis Kinetics of Oil Shale and its Kerogen

2015 ◽  
Vol 733 ◽  
pp. 236-240 ◽  
Author(s):  
Wei Wang ◽  
Shu Yuan Li ◽  
Ting Tan ◽  
Yue Ma
Keyword(s):  
Oil Shale ◽  
Regression Coefficient ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
Pyrolysis Kinetics ◽  
Heating Rates ◽  
Nitrogen Flux ◽  
Thermo Gravimetric ◽  
Gravimetric Data ◽  
Kinetics Of

The pyrolysis kinetics of Chinese oil shale and its kerogen was investigated using thermo gravimetric analysis (TGA) in this paper. Experiments were performed at four different heating rates of 10, 15, 20 and 25°C/min from ambient temperature to 560 °C at nitrogen flux with 60ml/min. The results demonstrated that the thermal decomposition of oil shale and its kerogen involved three degradation steps. Different thermo gravimetric data were analyzed by Friedman procedure. The values of apparent activation energy E of oil shale ranged from 160kJ/ mol to 240kJ/mol, but these of kerogen were in the range of 150kJ/mol to 240kJ/mol. It was found that the plot of lnA versus E became a linear line with a regression coefficient of 0.99.

scholarly journals Physio-Chemical and Thermo-Gravimetric Analysis of Prosopis Juliflora and Fibre-Reinforced Plastic for Gasification Process

2019 ◽  
Vol 8 (2) ◽  
pp. 4232-4238
Keyword(s):  
Gas Flow ◽  
Thermo Gravimetric Analysis ◽  
Chemical Conversion ◽  
Prosopis Juliflora ◽  
Nitrogen Atmosphere ◽  
Gravimetric Analysis ◽  
Waste Biomass ◽  
Heating Rates ◽  
Thermo Gravimetric ◽  
Reinforced Plastic

Significance of developing energy from waste biomass has grown extremely high in recent decades. Prosopis Juliflora (PJ - Organic) is a waste plant which was grown in agricultural landfills and Fibre-reinforced plastic (FRP - Inorganic) is procured from composite industry waste are collected for this work, which is abundant in quantity. Gasification are the adequate method for harvesting energy efficiently from organic and inorganic biomass. The objective of this research was to conclude the proximate and ultimate analysis of Prosopis Juliflora and Fibre-reinforced plastic to study the potential for thermo-chemical conversion process. Thermo-gravimetric analysis were observed at heating rates of 20, 30 and 40 ºC/min in inert (nitrogen) atmosphere with gas flow protection rate of 40 ml/min was analyzed for PJ, FRP and PJ+FRP (50:50). Index Terms:

Coordination Compounds of Some 3d-Transition Metal Ions with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)- thiosemicarbazide

2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Madalina Angelusiu ◽  
Maria Negoiu ◽  
Stefania-Felicia Barbuceanu ◽  
Tudor Rosu
Keyword(s):  
Coordination Compounds ◽  
Magnetic Moments ◽  
Thermo Gravimetric Analysis ◽  
Electronic Spectroscopy ◽  
Transition Metal Ions ◽  
Synthesis And Characterization ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
New Compounds

The paper presents the synthesis and characterization of Cu(II), Co(II), Ni(II), Cd(II), Zn(II) and Hg(II) complexes with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)-thiosemicarbazide. The new compounds were characterized by IR, EPR, electronic spectroscopy, magnetic moments, thermo-gravimetric analysis and elemental analysis.

scholarly journals Development of Nervilia fordii Extract-Loaded Electrospun PVA/PVP Nanocomposite for Antioxidant Packaging

Foods ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1728
Author(s):  
Peng Wen ◽  
Teng-Gen Hu ◽  
Yan Wen ◽  
Ke-Er Li ◽  
Wei-Peng Qiu ◽  
...  
Keyword(s):  
Food Packaging ◽  
Thermo Gravimetric Analysis ◽  
Xrd Analysis ◽  
Sem Analysis ◽  
Poly Vinyl Alcohol ◽  
Total Phenolic ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
Phenolic And Flavonoid ◽  
Thermal Stability Of

An ethyl acetate extract from of Nervilia fordii (NFE) with considerable suppression activity on lipid peroxidation (LPO) was first obtained with total phenolic and flavonoid contents and anti-LPO activity (IC50) of 86.67 ± 2.5 mg GAE/g sample, 334.56 ± 4.7 mg RE/g extract and 0.307 mg/mL, respectively. In order to improve its stability and expand its application in antioxidant packaging, the nano-encapsulation of NFE within poly(vinyl alcohol) (PVA) and polyvinyl(pyrrolidone) (PVP) bio-composite film was then successfully developed using electrospinning. SEM analysis revealed that the NFE-loaded fibers exhibited similar morphology to the neat PVA/PVP fibers with a bead-free and smooth morphology. The encapsulation efficiency of NFE was higher than 90% and the encapsulated NFE still retained its antioxidant capacity. Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD) analysis confirmed the successful encapsulation of NFE into fibers and their compatibility, and the thermal stability of which was also improved due to the intermolecular interaction demonstrated by thermo gravimetric analysis (TGA). The ability to preserve the fish oil’s oxidation and extend its shelf-life was also demonstrated, suggesting the obtained PVA/PVP/NFE fiber mat has the potential as a promising antioxidant food packaging material.

The Experimental Study on Combustion Characteristics of Corn Straw and Coal Gangue

2011 ◽  
Vol 135-136 ◽  
pp. 1057-1059
Author(s):  
Heng Tao Zhou ◽  
Yong Wei
Keyword(s):  
Thermo Gravimetric Analysis ◽  
Combustion Characteristics ◽  
Combustion Characteristic ◽  
Gravimetric Analysis ◽  
Characteristic Parameters ◽  
Corn Straw ◽  
Kinetics Analysis ◽  
Thermo Gravimetric ◽  
Ignition Characteristic ◽  
Coal Residue

With a thermo gravimetric analysis apparatus combustion characteristics experiments of coal residue cornstalk and mixtures of them were done at 20 C/min heating rate. Then the combustion characteristic Parameters were obtained by above experiments. The c combustion activation energies were acquired by kinetics analysis. The results show those: the ignition characteristic and synthesis combustion characteristic of coal residue are bad. The ignition characteristic and synthesis combustion characteristic of cornstalk are better. The combustion characteristics of the mixture of coal residue and cornstalk are determined by mixing ratio. The ratio of cornstalk is more and the synthesis combustion characteristic is better.

Grafting of Chitosan: Structural, Thermal and Antimicrobial Properties

2019 ◽  
Vol 41 (2) ◽  
pp. 240-240
Author(s):  
Nevin Cankaya Nevin Cankaya
Keyword(s):  
Antimicrobial Activity ◽  
Graft Copolymers ◽  
Thermo Gravimetric Analysis ◽  
Antimicrobial Properties ◽  
Gravimetric Analysis ◽  
Analysis Method ◽  
Methacryloyl Chloride ◽  
Thermo Gravimetric ◽  
Thermal Stabilities ◽  
Ft Ir

In this study, some new chitosan materials were synthesized by the grafting of chitosan with the monomers such as 1-vinylimidazole (VIM), methacrylamide (MAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS). First of all, chitosan methacrylate was prepared by esterification of primary -OH group with methacryloyl chloride a 25.13% yield by mole. The monomers were grafted into chitosan methacrylate via free radical polymerization using 2,2and#39;-Azobisisobutyronitrile as an initiator in N,N-dimethylformamide. The graft copolymers were characterized by FT-IR spectra and elemental analysis. Thermal stabilities of the graft copolymers were determined by TGA (thermo gravimetric analysis) method. The synthesized chitosan methacrylate and its graft copolymers were tested for their antimicrobial activity against bacteria and yeast.

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