| IAEA-CN-115-48 · Synergistic Effects Obtained by Combined Electron Beam and Microwave
Irradiation
D. Martin, G. Craciun, E. Manaila, D. Ighigeanu, C. Oproiu, N. Iacob
National Institute for Laser, Plasma and Radiation Physics, Electron Accelerators Laboratory,
#409 Atomistilor St., P.O.Box-MG36, 077125 Magurele, jud. Ilfov, Romania
Abstract: A new method based on microwave energy addition to accelerated electron beam energy for biological
waste processing is described. The comparative effects obtained by applying separate and combined electron
beam (EB) and microwave (MW) irradiation to the microbiological decontamination of the wheat flour, wheat
bran and sewage sludge are presented. The research results demonstrated that the combined EB and MW
irradiation produces the biggest reduction of microorganisms. The combined irradiation EB + MW decreases the
wheat flour NTG by a factor of 7.38 and of 6.58 bigger than separate EB irradiation and separate MW
irradiation, respectively. Also, EB + MW procedure decreases the wheat flour moulds by a factor of 3.7 and 2.43
bigger than separate EB irradiation and separate MW irradiation, respectively. The process has been
demonstrated in a pilot-scale operation.
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