Polyvinyl Chloride and Halogen-free Electric Wires Thermal Decomposition

Conesa, Juan A.; Moltó, Julia; Font, R.; Egea, Silvia

doi:10.1021/ie101265e

Cited by 13 publications

(15 citation statements)

References 18 publications

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“…For all the fractions (1 to 3), the same values of apparent activation energy and reaction order obtained under a nitrogen atmosphere have been considered, but the preexponential factor could change due the presence of the oxygen. This type of model satisfactorily fitted the decomposition of other materials [16,17]. With all these considerations, acceptable correlations of the data are obtained.…”

Section: Kinetic Modelsupporting

confidence: 54%

Thermogravimetric and kinetic analysis of the decomposition of solid recovered fuel from municipal solid waste

Conesa

Rey

2015

J Therm Anal Calorim

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The thermal decomposition of a Solid Recovered Fuel (SRF) has been studied using thermogravimetry, in order to get information about the main steps in the decomposition of such material. The study comprises two different atmospheres: inert and oxidative. The kinetics of decomposition is determined at three different heating rates using the same kinetic constants and model for both atmospheres at all the heating rates simultaneously. A good correlation of the TG data is obtained using three n th order parallel reactions.

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Section: Kinetic Modelsupporting

confidence: 54%

Thermogravimetric and kinetic analysis of the decomposition of solid recovered fuel from municipal solid waste

Conesa

Rey

2015

J Therm Anal Calorim

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“…For all the fractions (1 to 3), the same values of apparent activation energy and reaction order obtained under a helium atmosphere have been considered, but the pre-exponential factor is assumed to be different due to the presence of the oxygen. This type of model satisfactorily fitted the decomposition of other materials [13,14]. With all these considerations, acceptable correlations of the data are obtained.…”

Section: Kinetic Model For Pyrolysis and Combustion Processessupporting

confidence: 54%

Biomasses pyrolysis and combustion kinetics through n-th order parallel reactions

2011

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The decomposition of five different biomass samples was studied in a thermobalance.The samples consisted of esparto grass, straw, Posidonea Oceanic seaweed, waste from urban and agricultural pruning and waste of forest pruning. Both pyrolysis in inert atmosphere and combustion in the presence of oxygen were studied. Different heating rates were used and a global kinetic model, valid for all biomasses at the different conditions studied, was proposed. The kinetic model is able to fit all the runs performed with each biomass sample.

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“…In a previous work [ 5], emission tests were performed on the thermal decomposition of PVC and halogen-free electrical wires, pointing out the important quantities of poly-chlorinated dioxins and furans emitted in uncontrolled processes. On the contrary, a reduced amount of pollutants was measured in the halogen-free electrical wires thermal decomposition.…”

Section: Introductionmentioning

confidence: 99%

“…This technique has been widely used to study the thermal decomposition of different waste electrical and electronic equipment, given that the TG curves provide information on the mechanisms of decomposition of the sample and allow for calculate the kinetic parameters of the reaction that has taken place [5].…”

Section: Introductionmentioning

confidence: 99%

Decomposition kinetics of materials combining biomass and electronic waste

Conesa

Soler

2016

J Therm Anal Calorim

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The disposal of waste from electrical and electronic equipment (WEEE) is an actual problem of industrialized countries.In the present work, thermal decomposition of different materials has been studied in a thermobalance at different heating rates. Kinetic models are proposed for the pyrolysis, gasification and combustion of crushed wood pellets (CWP), halogen-free electrical wires (EWs) and printed circuit boards (PCBs). Three different heating rates were used at each atmosphere condition. One set of parameters can explain all the experiments at the different atmospheres and at the three different heating rates used. In the case of CWP, a model considering three independent first-order reactions gave very good correlations all the heating rates tested both in inert and oxidant atmosphere. The decomposition of synthetic materials (EW and PCB) is modelled by using n-th order kinetics. On the other hand, mixtures of these three materials have been prepared and tested for decomposition behaviour. A weighted sum of the curves simulated using kinetics of the materials separately gives a good concordance with the experimental curve in the case of PCBs, indicating that there is not chemical interaction between CWP and PCBs when heated and decomposed. This would indicate that the production of pollutants in the decomposition will not be affected by the presence of the other material.Nevertheless, a strong interaction is found with the mixtures between biomass and EW.

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Polyvinyl Chloride and Halogen-free Electric Wires Thermal Decomposition

Cited by 13 publications

References 18 publications

Thermogravimetric and kinetic analysis of the decomposition of solid recovered fuel from municipal solid waste

Thermogravimetric and kinetic analysis of the decomposition of solid recovered fuel from municipal solid waste

Biomasses pyrolysis and combustion kinetics through n-th order parallel reactions

Decomposition kinetics of materials combining biomass and electronic waste

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