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Nishizawa, Masato*; Chino, Masamichi
Taiki Kankyo Gakkai-Shi, 39(1), p.31 - 42, 2004/01
no abstracts in English
Hirosawa, Shojiro*; Kojima, Takuji; Hashimoto, Shoji; Suzuki, Ryoji*; Aoki, Shinji*
Radioisotopes, 51(8), p.285 - 295, 2002/08
Experiments of flue gas treatment by electron beam were carried out, using simulated lignite-burning flue gas containing SO
(5500ppm), NO(390ppm) and HO(22%). Removal efficiency of SO was more than 90% at a dose of 1-2kGy. It shows applicability of electron beam for treatment of lignite-burning flue gas. Another removal reaction besides the radiation-induced radical reaction and the thermal reaction occurring without irradiation was suggested by the facts that removal of SO by the radical reaction is only a few hundreds of ppm and the removal amounts by thermal reaction under irradiation is lower than a half of total desulfurization. The mechanism similar to thermal reaction was proposed, assuming simultaneous uptake reaction of SO and NH
on the surface of liquid aerosol. It was suggested that ammonium nitrate having deliquescence relative humidity(DRH) of 60% at 25
plays an important role in producing liquid aerosols. Decrease of DRH of ammonium nitrate with increasing temperature and with formation of double salt of ammonium sulfate results in enhancement of formation of liquid aerosols.
Furuno, Akiko; Nagai, Haruyasu; Umeyama, Nobuaki; Chino, Masamichi
Taiki Kankyo Gakkai-Shi, 37(1), p.23 - 34, 2002/01
The active volcano Oyama in the Miyake Island has been emitting a huge amount of volcanic gases since the first eruption in July 2000. High concentrations of SO2 gas originated in Oyama frequently appear in the wide area from the northeast to the west part of Honshu, Japan. This paper describes real-time prediction of SO2 dispersion covering the Tokai and Kanto District and its verification by comparing with SO2 observation data from October to November 2000. Atmospheric dispersions of SO2 are calculated by using our software system that combines a regional atmospheric dynamic model and a particle random walk model. It was proved that the real-time prediction of our system has adequate precision. The importance of including the effect of wet deposition was also shown. The release amounts estimated from the comparison between the calculation result and the monitoring data are 20,000 - 50,000 ton/day, which is consistent to measured ones at the Miyake Island.
Nagai, Haruyasu; Terada, Hiroaki; Chino, Masamichi
Tenki, 48(4), p.11 - 14, 2001/04
no abstracts in English
Nagai, Haruyasu; Furuno, Akiko; Terada, Hiroaki; Umeyama, Nobuaki; Yamazawa, Hiromi; Chino, Masamichi
JAERI-Research 2001-012, 28 Pages, 2001/03
JAERI-Research-2001-012.pdf:1.77MB
Japan Atomic Energy Research Institute is advancing the study for prediction of material circulation in the environment to cope with environmental pollution, based on SPEEDI (System for Prediction of Environmental Emergency Dose Information) and WSPEEDI (Worldwide version of SPEEDI), which are originally developed aiming at real-time prediction of atmospheric dispersion of radioactive substances accidentally released from nuclear facility. As a part of this study, dispersion simulation of volcanic gas erupted from Miyake Island is put into practice. After the stench incident at the west Kanto District on 28 August 2000 caused by volcanic gas from Miyake Island, simulations dealing with atmospheric dispersion of volcanic gas from Miyake Island have been carried out. This report describes the details of these studies.
Iwase, Masanori*
JNC TJ8400 2000-063, 78 Pages, 2000/03
JNC-TJ8400-2000-063.pdf:1.93MB
This study is aimed at controlling oxidation reaction of molten metal by ash in incineration systems, and at positively utilizing the oxidation reaction for decontamination of slag. In this year, in order to investigate physico-chemical properties of mixed fused salt containing alkali sulfates, with special focus on the behaviour of oxygen anion in the melts, Cu
/ Cu
redox equilibrium experiments were carried out. Among the effect of various parameters on Cu / Cu ratio in binary and ternary alkali sulfate melts, the effect of partial pressures of oxygen and SO was mainly investigated in the study. Variation in Cu / Cu ratio were presented as the function of partial pressures of oxygen and SO, respectively. Possible thermodynamic interpretation were made on the experimental results. In addition, the dissolution of CrO in mixed alkali sulfates were also investigated as a first step to elucidate the mechanism of hot corrosion. With this investigation, an important finding was obtained that the solubility of CrO for melts with same average ionic radius, in other words, oxygen ion activity, were essentially identical under constant temperature and atmosphere.
JAERI-Research 96-053, 114 Pages, 1996/10
JAERI-Research-96-053.pdf:3.81MB
no abstracts in English
Hirota, Koichi; J.Maekelae*; Tokunaga, Okihiro
Industrial & Engineering Chemistry Research, 35(10), p.3362 - 3368, 1996/00
Times Cited Count：19 Percentile：73.69(Engineering, Chemical)no abstracts in English
Hashimoto, Shoji; Tokunaga, Okihiro
OHM (Sougou Denki Zasshi), 82(9), p.55 - 59, 1995/09
no abstracts in English
Namba, Hideki; Tokunaga, Okihiro; Hashimoto, Shoji; ; ; ; ;
JAERI-Tech 95-013, 6 Pages, 1995/03
no abstracts in English
Hashimoto, Shoji; Namba, Hideki; Tokunaga, Okihiro; ; ; ; ;
1995 SO Control Symp., Book 3, 0, 10 Pages, 1995/03
no abstracts in English
; ; ; ; Namba, Hideki; Tokunaga, Okihiro; Hashimoto, Shoji; ;
Ebara Jiho, (166), p.56 - 64, 1995/00
no abstracts in English
Namba, Hideki
Genshiryoku Kogyo, 41(7), p.20 - 23, 1995/00
no abstracts in English
; ; ; ; ; Tokunaga, Okihiro; Namba, Hideki
Proc. of Power-Gen Asia 94,Conf. Papers, 1, p.457 - 465, 1995/00
no abstracts in English
Hirota, Koichi; Tokunaga, Okihiro; Miyata, Teijiro; Sato, Shoichi; ; ; ; ; ; ; et al.
Radiation Physics and Chemistry, 46(4-6), p.1089 - 1092, 1995/00
Times Cited Count：10 Percentile：68.27(Chemistry, Physical)no abstracts in English
Namba, Hideki; Tokunaga, Okihiro; Hashimoto, Shoji; ; ; ; ;
Radiation Physics and Chemistry, 46(4-6), p.1103 - 1106, 1995/00
Times Cited Count：38 Percentile：94.17(Chemistry, Physical)no abstracts in English
removal from flue gas by electron beam techniqueH.Maetzing*; Namba, Hideki; Tokunaga, Okihiro
Radiation Physics and Chemistry, 42(4-6), p.673 - 677, 1993/00
Times Cited Count：18 Percentile：82.49(Chemistry, Physical)no abstracts in English
YU
O
(x
0,x=0,x
0)Fujino, Takeo*; Yamashita, Toshiyuki; Ouchi, Kinji
Journal of Nuclear Materials, 183, p.46 - 56, 1991/00
Times Cited Count：9 Percentile：68.62(Materials Science, Multidisciplinary)no abstracts in English
; ; ;
JAERI 1265, 17 Pages, 1980/03
no abstracts in English
-O-N mixtures containing NH; ;
Journal of Nuclear Science and Technology, 17(11), p.822 - 830, 1980/00
Times Cited Count：11 Percentile：73.10(Nuclear Science & Technology)no abstracts in English
