TG–FTIR-MS study of pyrolysis products evolving from peat

Yang, Jiuling; Zhao, Wei; Zhou, Jianjun

doi:10.1016/j.jaap.2015.11.002

Cited by 133 publications

(43 citation statements)

References 27 publications

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“…The absorption peaks in the frequency range 3700-3200 cm −1 indicate the free or intermolecular bonded O-H stretching functional group [39]. Absorption bands in the range of 3200-2600 cm −1 specify strong, medium and weak C-H stretching vibrations mostly in the alkane class [40,41]. A significant behavior can be observed for the peak at 2966 cm −1 with different times and temperatures.…”

Section: Ftir Of the Released Gas By Thermal Degradation Of Plapmentioning

confidence: 95%

Microrecycling of the metal–polymer-laminated packaging materials via thermal disengagement technology

2019

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Polymer-laminated metals are widely used in the packaging industries due to their flexibility of applications, superior properties, and relatively lower cost. Despite the advantages accomplished by the polymer-metal multilayer packaging materials, the recycling is a very difficult task due to the complexities of multimaterial intrinsic behaviors during the processing of cast-off materials. This study represents an innovative and sustainable way of recycling polymerlaminated aluminum packaging (PLAP) materials (postconsumer food packaging) into high-quality aluminum and a potential source of high-energy hydrocarbon gases and particulate carbon coproducts. Both sides of the aluminum foil of the packaging were laminated by two different polymers (polyethylene terephthalate, and polypropylene). Volatiles from the PLAP materials were eliminated by the thermal disengagement technology at 400-650 °C (5-30 min) with and without an inert gas supply. The volatiles evaporated from the PLAP materials were about 32%, and the rest 68% were aluminum (~ 65%) and carbon (~ 3%) from the decomposition of the polymers. The oxidation behavior of the surface of the recycled aluminum was studied by XRD, XPS, and elementary mapping, and a nanoscale oxidized surface was found in both inert and air atmospheric TD. The purity of the aluminum was measured above 98% by two different methods (LIBS and ICP-MS). The gaseous products released in TD were detected as high energy-carrying hydrocarbon, CO 2 , CO, H 2 , H 2 O, and few other gases observed by real-time monitoring. The clean gases released in TD might be utilized upon reforming into CH 4 or H 2 by further processing or as it turns out might be utilized as a source of heat energy for other applications. Carbon found from the decomposition of the hydrocarbons can be another useful element of this study. This recycling process offers an economically and environmentally feasible recycling strategy for a complex multilayer polymer-metal packaging waste.

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Section: Ftir Of the Released Gas By Thermal Degradation Of Plapmentioning

confidence: 95%

Microrecycling of the metal–polymer-laminated packaging materials via thermal disengagement technology

2019

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“…To control the reflected signal during the process of the microwave pyrolysis, a directional coupler (5) is included in the coaxial path. The temperature was measured at the outer boundary of the peat using a thermocouple (6).…”

Section: Laboratory Setup and Experimental Techniquementioning

confidence: 99%

“…Currently, scientific research in the field of physical and chemical processing of organic raw materials is becoming increasingly important. Pyrolysis of organic substances and materials: oil, coal, peat, wood, agricultural and industrial waste, household waste is considered as one of the promising industrial applications of high-power microwave radiation [1][2][3][4][5][6][7]. One of the materials, which has a wide variety of its practical applications, including processing by pyrolytic destruction, is peat.…”

Section: Introduction: Goals and Objectives Of The Studymentioning

confidence: 99%

Experimental study of the dynamics of microwave pyrolysis of peat

et al. 2019

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The work is devoted to the study of the effect of high-power microwave radiation on sphagnum peat. To implement the microwave pyrolysis process, a laboratory unit based on a coaxial resonator has been created. An industrial magnetron with a frequency of 2.45 GHz was used as a source of microwave radiation. Samples of gas, liquid and solid phases were obtained and analyzed. Studies of soft microwave pyrolysis in conditions of constant removal of gaseous reaction products were carried out. A comparative analysis of the products obtained in microwave pyrolysis and pyrolysis with thermal heating was performed. The aim of the research is to create highly efficient environmentally friendly technologies for processing biofuels with a high yield of combustible gases, suitable for further use in power plants, as well as the production of resinous fraction and carbon residue.

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“…One of the materials that recently attracted high research interest from the point of view of the great variety of its practical applications is a peat [1].There are various methods of the peat processing; however, the most promising is a high-temperature microwave pyrolysis. The main advantages of microwave pyrolysis over traditional thermal heating systems include the following: high processing efficiency, volume character and high thermal efficiency (up to 90 -95%) of microwave heating, increase in the speed of chemical and physical-chemical reactions under the action of microwave radiation, possibility to achieve high temperatures and deep processing of biomaterial, high environmental safety, etc.…”

mentioning

confidence: 99%

“…One of the materials that recently attracted high research interest from the point of view of the great variety of its practical applications is a peat [1].…”

mentioning

confidence: 99%

High-temperature microwave pyrolysis of peat as a method to obtaining liquid and gaseous fuels

et al. 2017

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Currently, scientific researches and engineering developments in the field of physical-chemical processing of organic raw materials, in particular, aimed on production of so-called renewable liquid and gaseous fuels, are becoming increasingly important. One of the materials that recently attracted high research interest from the point of view of the great variety of its practical applications is a peat [1].There are various methods of the peat processing; however, the most promising is a high-temperature microwave pyrolysis. The main advantages of microwave pyrolysis over traditional thermal heating systems include the following: high processing efficiency, volume character and high thermal efficiency (up to 90 -95%) of microwave heating, increase in the speed of chemical and physical-chemical reactions under the action of microwave radiation, possibility to achieve high temperatures and deep processing of biomaterial, high environmental safety, etc.The installation for the high-temperature peat destruction under the action of microwave radiation was developed at the IAP RAS based on industrial 2.45 GHz / 1 kW magnetron (Fig. 1).In the recent series of experiments, optimization of the electrodynamic system transportating radiation from the magnetron into the interaction vessel (reactor) was carried out. To reduce thermal loads on the barrier window an additional cooled waveguide section was installed for condensation of the resins products of the processing. Tuning waweguide elements were added to keep high transmission of the radiation into the reactor during radical change of the absorption capacity of peat in the process of high temperature treatment [2].The first series of experiments on this installation was carried out. As a result of high-temperature peat pyrolysis, an oily fraction, a carbonaceous residue and a pyrolysis gas were obtained. A series of experiments was also carried out using traditional thermal heating of peat. The obtained samples were analyzed on GCMS-QP2010 Ultra-GC-mass spectrometer. Chromatograms of pyrolytic gases were compared and showed a higher yield of combustible gases when microwave exposure to samples (Fig. 2, 3).A CH-analysis of the initial sample loaded into the reactor and a carbonaceous residue after the pyrolysis process were also carried out (Table 1). Fig. 1. Photograph of experimental test facility for peat pyrolysis heated by microwave radiation:

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TG–FTIR-MS study of pyrolysis products evolving from peat

Cited by 133 publications

References 27 publications

Microrecycling of the metal–polymer-laminated packaging materials via thermal disengagement technology

Microrecycling of the metal–polymer-laminated packaging materials via thermal disengagement technology

Experimental study of the dynamics of microwave pyrolysis of peat

High-temperature microwave pyrolysis of peat as a method to obtaining liquid and gaseous fuels

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