Investigation of combustion kinetics of treated and untreated waste wood samples with thermogravimetric analysis

Date

2009-07-01

Author

Yorulmaz, Sema Yurdakul
Atımtay, Aysel

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

138
views

0
downloads

In the present study, combustion mechanisms, thermal kinetics, and phases of combustion were investigated for waste wood samples (untreated pine and treated MDF, plywood and particleboard). Waste wood samples were combusted in air at 10, 20 and 30 degrees C/min heating rates in TGA. The results of TG analysis have shown that thermal decomposition of treated samples takes place at lower temperatures as compared to the untreated pine sample because of the catalyzing effects of the chemicals in the samples. Therefore, there were less flammable products, lower weight losses in the main oxidation region, and decrease in the maximum weight loss temperatures and formation of more char for treated samples as compared to untreated pine sample. Thermal kinetic constants for the samples were calculated by using Coats Redfern Method. In order to find out the mechanisms responsible for the oxidation of the waste wood samples, six solid-state mechanisms of Coats Redfern Method were tested. The results of the Coats Redfern Method have shown that diffusion mechanism is the effective mechanism for all regions of the pine samples. For the main oxidation region, D4 mechanism (Ginstling-Brounshtein equation) was found to be the main diffusion mechanism for pine samples. For the treated samples such as MDF, plywood and particleboard, first-order reaction (F1) was found as an effective mechanism. Treatment of wood with different additives and glues seemed to alter the thermal oxidation process and change the effective oxidation mechanisms.

Subject Keywords

Waste wood, MDF, Plywood, Particleboard, Combustion kinetics, Non-isothermal thermogravimetry, Coats redfern method

URI

https://hdl.handle.net/11511/32593

Journal

FUEL PROCESSING TECHNOLOGY

DOI

https://doi.org/10.1016/j.fuproc.2009.02.010

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Investigation of Combustion Kinetics of Five Waste Wood Samples with Thermogravimetric Analysis Yorulmaz, Sema Yurdakul; Atımtay, Aysel (2007-02-24) In the present study, combustion mechanisms, thermal kinetics, and phases of combustion were investigated for untreated pine and treated MDF, plywood and particleboard samples. Waste wood samples were combusted in air at 10, 20 and 30 degrees C/min heating rates in TGA. As a result of TG analysis, thermal decomposition of treated samples was observed at lower temperatures as compared to the untreated pine sample because of the catalyzing effects of the chemicals in the samples. Therefore, there were less fl...
Investigation of emissions from thermal oxidation of waste wood samples using spectral methods YURDAKUL, Sema; Atımtay, Aysel (2015-01-01) The objective of this study was to investigate the effects of chemical treatment and heating rate on the emissions released from various waste wood samples including untreated pine and chemically treated MDF, plywood and particleboard after thermal treatment. Emission characteristics of the samples were determined in situ by using their FTIR spectra. Some toxic and carcinogenic gases such as formaldehyde, isocyanate, ammonia and phenyl group were detected in emissions from low temperature combustion of trea...
Investigation of co-combustion characteristics of low quality lignite coals and biomass with thermogravimetric analysis Varol, Murat; Atımtay, Aysel; Bay, B.; Olgun, H. (2010-10-20) In this study, combustion and co-combustion characteristics of three biomass fuels and three Turkish lignite coals were investigated by using a thermo gravimetric analyzer. There are just a few studies investigating the co-combustion characteristics of coal and biomass, and the synergistic effect of their various combinations on the peak temperatures and burnout times.
Investigation of emission and combustion kinetics of waste wood samples with thermal and spectral methods Yorulmaz (Yurdakul), Sema; Atımtay, Aysel; Department of Environmental Engineering (2006) The mechanisms and kinetics of combustion of waste wood as well as the phases during combustion processes are important to eliminate these wastes without any possible damage to environment. In the present study, combustion mechanisms, activation energy and pre-exponential constants, and phases of combustion were investigated for untreated natural pine and treated Medium Density Fiberboard (MDF), plywood and particleboard samples that involve some chemicals and additives. Waste wood samples were heated in ai...
Contribution of nanoclays to the flame retardancy of polyethylene-based cable insulation materials with aluminum hydroxide and zinc borate Kaynak, Cevdet (SAGE Publications, 2014-03-01) The main aim of this study was to investigate contribution of nanoclays to the flame retardancy of two cable insulation materials: low-density polyethylene and its blend with ethylene vinyl acetate. For this purpose, nanoclays were first incorporated alone, then together with traditional flame-retardant aluminum hydroxide, and then together with aluminum hydroxide-zinc borate system. Compounds and nanocomposites were prepared by melt mixing method with a twin-screw extruder, while specimens were shaped by c...

Citation Formats

S. Y. Yorulmaz and A. Atımtay, “Investigation of combustion kinetics of treated and untreated waste wood samples with thermogravimetric analysis,” FUEL PROCESSING TECHNOLOGY, pp. 939–946, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32593.