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Non‐Thermal Plasma‐Based Technology for Soil Treatment
Author(s) -
Stryczewska Henryka D.,
Ebihara Kenji,
Takayama Masahiro,
Gyoutoku Yutaka,
Tachibana Masahiro
Publication year - 2005
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200400061
Subject(s) - ozone , dielectric barrier discharge , electrode , analytical chemistry (journal) , materials science , water content , plasma , volumetric flow rate , soil water , volume (thermodynamics) , nonthermal plasma , voltage , moisture , dielectric , chemistry , environmental chemistry , environmental science , composite material , optoelectronics , soil science , electrical engineering , thermodynamics , physics , geotechnical engineering , organic chemistry , quantum mechanics , engineering
Summary: Dielectric barrier discharge (DBD) plasma reactors of differing configuration, having a high‐voltage electrode in the form of a screw or pyramid, have been investigated as a potential source of soil treatment agents (ozone and nitric oxide). A special geometry of the high‐voltage electrode allows a relatively large ozone concentration to be obtained both from air and oxygen, which can be controlled by the gas flow rate, cooling conditions, and value and frequency of the supply voltage with reasonable generation efficiency. These results are compared with those generated by a commercially available surface discharge reactor. The resultant properties of treated soils are characterized, such as acidity (pH), electrical conductivity (EC), and content of moisture (pF), nitrogen (NH 4 N, NO 3 N), minerals (P 2 O 5 , K 2 O, CaO, MgO, Fe, Mn), and total bacteria and fungi.The variation of ozone concentration with supply voltage for each of the electrodes studied here.