Numerical modeling and TGA/FTIR/GCMS investigation of fibrous residue combustion

Saade, Raafat; Koziński, Janusz A.

doi:10.1016/s0961-9534(00)00006-4

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…The gaseous products from the pyrolysis of palm oil wastes were investigated using TGA−FTIR. Previous publications have shown that FTIR has been used to analyze the gaseous products from pyrolysis either qualitatively or quantitatively. − …”

Section: Methodsmentioning

confidence: 99%

Thermogravimetric Analysis−Fourier Transform Infrared Analysis of Palm Oil Waste Pyrolysis

et al. 2004

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The purpose of this study is to determine the pyrolysis characteristics and gas product properties of palm oil wastes, to promote a general idea of converting the wastes to an energy source. The palm oil waste contains ∼50 wt % carbon, 7 wt % hydrogen, and a trace amount of ash. The low heat value (LHV) of these wastes is ∼20 MJ/kg. They are ideal energy sources for biofuel generation. Thermal analysis demonstrates that these wastes are easily decomposed, with most of their weight lost from 220 °C to 340 °C at slow heating rates. The pyrolysis process could be divided into four stages: moisture evaporation, hemicellulose decomposition, cellulose decomposition, and lignin degradation. The kinetic analysis showed that the reaction order for the pyrolysis of palm oil wastes and three model biomass components (hemicellulose, cellulose, and lignin) is 1. The activation energy of the palm oil wastes is ∼60 kJ/mol. The decomposition process is prolonged and the maximum mass loss rate is decreased when the heating rate is increased from 0.1 °C/min to 100 °C/min. Varying the particle size from 250 μm to >2 mm has no significant influence on pyrolysis. The main gaseous products from the pyrolysis of palm oil waste are identified using thermogravimetric analysis−Fourier transform infrared (TGA−FTIR) spectroscopy, and, particularly, their real-time evolution characteristics are investigated. This fundamental study provides a basic insight of the palm oil waste pyrolysis, which can benefit our current work in developing an advanced thermal processes for high-yield biofuel production from palm oil waste.

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Section: Methodsmentioning

confidence: 99%

Thermogravimetric Analysis−Fourier Transform Infrared Analysis of Palm Oil Waste Pyrolysis

et al. 2004

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“…Many researchers have used pyrolysis gas chromatography-mass spectroscopy to study the pyrolysis of cotton [5], pine wood [6], paper [7] and others [8], [9]. Moreover, thermogravimetry coupled with Fourier Transform Infrared Spectroscopy were used successfully to determine products of pyrolysis [10], [11]. As the chemical conversion of solid raw materials to several products is highly reliant on the kinetic rates of the pyrolysis reactions, it is apparent that accurate kinetic models are required so as to design the efficient pyrolysis process [12].…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis Characteristics of Phoenix Dactylifera Date Palm Seeds Using Thermo-Gravimetric Analysis (TGA)

Babiker¹,

Aziz²,

Heikal³

et al. 2013

IJESD

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Abstract-Mass losses of Phoenix dactylifera date palm seeds (DPSs) were measured using a thermo-gravimetric analyzer (TGA). Six-milligram-sample of six varieties of DPSs were pyrolyzed in an inert condition (argon atmosphere) with a constant flow rate of 100 ml/min for the entire range of experiments. The experiments were conducted under non-isothermal conditions and at a heating rate of 20°C/min until the furnace wall temperature reached 900°C. The moisture (M), ash (ASH), volatile matter (VM) and fixed carbon (FC) of the selected date seeds were determined by means of proximate analysis. The weight percentages of carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S) and atomic ratios (H/C and O/C) were determined through the ultimate analysis. The heating value, bulk and particle density of DPSs were also measured using a bomb calorimeter and ultra-pycnometer, respectively. The yield of the liquids was obtained by subtracting the total gaseous mass from the DTG data. The experiments demonstrated that there were significant differences in physiochemical properties of selected DPSs. The findings also revealed that DPSs contain much volatile compounds. DPSs energy densities were found to be among the high-quality biological feedstocks.Index Terms-Date palm seeds, pyrolysis, TGA, thermal characteristic.

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“…One major advantage of this coupling is to be a non-destructive method. Raafat uses this technique to investigate combustion process of fibrous sludge [12]. However, the compounds identification remains uneasy due to mixtures.…”

Section: Introductionmentioning

confidence: 99%

Chemometrics as a tool for the analysis of evolved gas during the thermal treatment of sewage sludge using coupled TG–FTIR

et al. 2003

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The thermal decomposition of sewage sludge has been investigated using coupled TG-FTIR for long time experiment (10 h). The exploitation of the resulted data from FTIR is performed by the SIMPLe-to-use interactive self-modelling mixture analysis (SIMPLISMA) method and allows to identify some of the evolved gases and to obtain their relative concentration profiles versus time without prior knowledge of constituents. As shown, this method can work properly for mixture with overlapped bands but some compounds remain "invisible" to FTIR analysis. More of that for long time experiment, it is possible to extract a spectrometer baseline contribution, which contributes to minimise noise and time variation.

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Numerical modeling and TGA/FTIR/GCMS investigation of fibrous residue combustion

Cited by 11 publications

References 14 publications

Thermogravimetric Analysis−Fourier Transform Infrared Analysis of Palm Oil Waste Pyrolysis

Thermogravimetric Analysis−Fourier Transform Infrared Analysis of Palm Oil Waste Pyrolysis

Pyrolysis Characteristics of Phoenix Dactylifera Date Palm Seeds Using Thermo-Gravimetric Analysis (TGA)

Chemometrics as a tool for the analysis of evolved gas during the thermal treatment of sewage sludge using coupled TG–FTIR

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