Pyrolysis behaviour and combustion kinetics of waste printed circuit boards

In this paper, thermogravimetric analysis of different types/grades of polyvinyl chloride (PVC) wall panel is carried out using thermogravimetric analyzer. The data output from the analyzer is subjected to data analysis software i.e., OriginPro 2018, from which thermal attributes are find out for different grades of PVC wall panel i.e., soft PVC, hard PVC, WPVC and SPVC. The thermogravimetric attributes i.e., onset degradation temperature T i , final degradation temperature T f ,, reaction interval and the peak temperature T P from the derivative thermogravimetric curve for the four basic types of PVC were comparatively analyzed for the characterization purpose. Beside the thermal characterization, the thermogravimetric analysis also disclosed the compositional attributes of the four types of PVC wall panel. The analysis in this paper characterized the SPVC as the most thermally stable PVC wall panel followed by hard, soft and WPVC.

Thermogravimetric analysis

10.1051/matecconf/202338102008

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Kinetic analysis of thermogravimetric data on some nickel(II) N-alkyldithiocarbamates

Journal of thermal analysis (1989)

Maria Lalia‐Kantouri G.A. Katsoulos C.C. Hadjikostas P. Kokorotsikos

Thermogravimetric and derivative thermogravimetric curves of some complexes [Ni(S2CNHR)2] (R=Me, Et, Pri, Bui, But, Bz,p-MePh,p-MeOPh,p-ClPh,p-NO2Ph) in a dynamic nitrogen atmosphere were studied to determine their modes of decomposition. All these complexes show similar TG profiles. The weight losses in the main decomposition stages indicate conversion of the nickel(II) dithiocarbamates to sulphide. Reaction orders were estimated via the shape characteristics of the corresponding derivative thermogravimetric curves and kinetic analysis of the thermogravimetric data was performed by using the Coats-Redfern and Horowitz-Metzger methods.

Thermogravimetric analysis

Derivative (finance)

10.1007/bf01911905

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A pyrolysis study for the thermal and kinetic characteristics of an agricultural waste with two different plastic wastes

Waste Management & Research The Journal for a Sustainable Circular Economy (2014)

Özge Çepelioğullar Ayşe Eren Pütün

In this study, thermochemical conversion of plastic wastes (PET and PVC) together with an agricultural waste (hazelnut shell) was investigated. In order to determine the thermal and kinetic behaviours, pyrolysis experiments were carried out from room temperature to 800 °C, with a heating rate of 10 °C min(-1) in the presence of a N2 atmosphere in a thermogravimetric analyzer. With the obtained thermogravimetric data, an appropriate temperature was specified for the pyrolysis of biomass-plastic wastes in a fixed-bed reactor. At the second step, pyrolysis experiments were carried out at the same conditions with the thermogravimetric analyzer, except the final temperature which was up to 500 °C in this case. After pyrolysis experiments, pyrolysis yields were calculated and characterization studies for bio-oil were investigated. Experimental results showed that co-pyrolysis has an important role in the determination of the pyrolysis mechanism and the process conditions while designing/implementing a thermochemical conversion method where biomass-plastic materials were preferred as raw materials.

Thermogravimetric analysis

10.1177/0734242x14542684

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Investigation of thermogravimetry and pyrolysis behavior of cigarettes by TGA and Py-GC/MS under different atmospheres

Chemical Research and Application (2011)

Ouyang Qun-xiang

The thermogravimetry and pyrolysis behavior of cigarettes were investigated by thermo-gravimetric analysis coupled with Fourier transform infrared spectroscopy(TG-FTIR) and pyrolysis-gas chromatrography/mass spectrometry(Py-GC/MS).The curves of TG and derivative thermogravimetry(DTG) of cigarettes were determined,and the releasing amounts of H2O,CO2,CO,NH3 and CH4 produced by pyrolysis under different atmospheres were also compared.The results showed that the atmosphere had an obvious effect on the pyrolysis of cigarettes.The thermal decomposition of cigarettes were mainly taken place between 200-500℃ and became slowly after 700℃ under nitrogen and air atmosphere.The solid residue in nitrogen at final was about 25%,while in air was approximately 7-9%.The qualitative and semi-quantitative analyses of the pyrolysis products of cigarettes were performed by Py-GC/MS at 600,700,800,900,1000℃ respectively.The effects of pyrolysis temperature and atmosphere on the pyrolysis behavior for the selected pyrolysates in smoke were discussed.

Thermogravimetry

Evolved gas analysis

Thermogravimetric analysis

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