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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Atmospheric Pressure DBD Low-Temperature Plasma Reactor for the Treatment of Sugarcane Bagasse

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Spyrou, Nicolas [1] ; de Amorim, Jayr [2]
Total Authors: 2
[1] Univ Patras, High Voltage Lab, Dept Elect & Comp Engn, Patras 26504 - Greece
[2] Aeronaut Inst Technol, Dept Phys, BR-12228900 Sao Jose Dos Campos - Brazil
Total Affiliations: 2
Document type: Journal article
Source: IEEE TRANSACTIONS ON PLASMA SCIENCE; v. 47, n. 3, p. 1583-1592, MAR 2019.
Web of Science Citations: 0

This paper embodies the results of experimental studies of a dielectric barrier discharge low-temperature nonequilibrium plasma reactor that runs in air and nitrogen at atmospheric-pressure conceived for surface treatment applications. A homemade reactor, of typical plane-to-plane geometry with the dielectric covering the upper electrode which is stressed by a high voltage (40 kV, 3-20 kHz) is used. Electrical signals (current and voltage), optical emission spectroscopy records, and total light emission measured by photomultiplier have been analyzed and used to distinguish different plasma regimes which are studied for the treatment of a lignocellulosic material (sugarcane bagasse). In the filamentary discharge regime, the gas temperature of few tens of degree Celsius above the ambient one was determined, the electronic temperature of some electronvolts and electron density in the range of 10(12)-10(13) cm(-3) were estimated. Plasma treated pellets of sugarcane bagasse were analyzed by diffuse reflectance infrared Fourier transform spectrometry and the relative results obtained under filamentary discharge regime have shown significant degradation of the lignin macromolecule. It has been shown important modifications on the lignocellulosic material, namely, the plasma attacks drastically the lignin bonds. Strong modification of lignin was observed near wavenumber of 3400 cm(-1), due to stretching vibrations of OH, and for the band 1114 cm(-1) which is related to C=C and C=O stretching. Severe decrease of the band intensity 1596 cm(-1), which due to C=C stretching and C=O, is also a result of the treatments done in this paper. (AU)

FAPESP's process: 12/15638-8 - Characterization of a DBD cold plasma to convert sugarcane bagasse in bioethanol
Grantee:Jayr de Amorim Filho
Support type: Research Grants - Visiting Researcher Grant - International