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JAEA Reports

Decomposition of $$it p$$-nonylphenols in water by $$^{60}$$Co $$gamma$$-ray irradiation

Kimura, Atsushi; Taguchi, Mitsumasa; Kojima, Takuji; Hiratsuka, Hiroshi*; Namba, Hideki

JAERI-Research 2004-018, 49 Pages, 2005/01

JAERI-Research-2004-018.pdf:6.6MB

no abstracts in English

Journal Articles

Decomposition of dioxins in waste incineration flue gas using electron beams

Kojima, Takuji

Genshikaku Kenkyu, 48(5), p.53 - 61, 2003/12

Technology for Decomposition/detoxification of dioxins in waste incineration flue gas of 200$$^{circ}$$C was developed using a samll self-shielded electron accelerator(300keV, size: 3 $$times$$ 3 $$times$$ 3 m$$^{3}$$ including shirlding materials), which is not reqired to have legal the approval of the installation for ionizing irradiation gererator. Dioxin decomposition ratio, the dioxin concentration values before and after electron beam irradiation, is higher than 90%, one order lower than initial value, at absorbed doses higher than 15kGy. The result shows decomposition mechanism for dioxins and demonstrates that endocrine disrupter activity of the flue gas also decrease by irradiation. The contents of paper was the same as one presented in the 2nd meeting on small accelerators, entitled "Promotion of use of small accelerators---".

Journal Articles

Decomposition of phenolic endocrine disrupting chemicals by potassium permanganate and $$gamma$$-ray irradiation

Abe, Yasuhiro*; Takigami, Machiko; Sugino, Koji*; Taguchi, Mitsumasa; Kojima, Takuji; Umemura, Tomonari*; Tsunoda, Kinichi*

Bulletin of the Chemical Society of Japan, 76(8), p.1681 - 1685, 2003/08

https://doi.org/10.1246/bcsj.76.1681
 Times Cited Count：5 Percentile：26.49(Chemistry, Multidisciplinary)

The decomposition of phenolic endocrine disrupting chemicals (P-EDCs), such as phenol, 4-butylphenol (BuP), and bisphenol A (BPA), in aqueous solutions by potassium permanganate (KMnO$$_{4}$$) was studied and its efficiency was compared with that of hydroxyl radicals (OH$$^{.}$$) generated by $$^{60}$$Co $$gamma$$-ray irradiation. Various organic acids and inorganic carbon were formed in the decomposition of P-EDCs due to either KMnO$$_{4}$$ or OH$$^{.}$$. They were formed via direct aromatic ring cleavage in the case of KMnO$$_{4}$$ and OH$$^{.}$$ addition-substitution reactions followed by aromatic ring cleavage in the case of OH$$^{.}$$. Comparing the decrease in the P-EDCs based on the number of electrons, the amount of KMnO$$_{4}$$ spent to completely eliminate BuP and BPA was comparable to the amount of OH$$^{.}$$. Although three times more KMnO$$_{4}$$ was needed for phenol than OH$$^{.}$$, the complete conversion of phenol into organic acids and inorganic carbon was achieved with 720$$mu$$M of electrons in both cases.

Journal Articles

Radiation treatment for endocrine disrupters in water

Taguchi, Mitsumasa

JAERI-Conf 2003-016, p.111 - 116, 2003/08

https://jopss.jaea.go.jp/pdfdata/JAERI-Conf-2003-016.pdf

None

Oral presentation

Evaluation of secretion from soybean root to soil using a positron-emitting tracer imaging system (PETIS)

Yin, Y.-G.; Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Nakamura, Takuji*; Shinano, Takuro*; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Visualization of secretion from soybean root using a positron-emitting tracer imaging system (PETIS)

Yin, Y.-G.; Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Kurita, Keisuke; Nakamura, Takuji*; Shinano, Takuro*; Fujimaki, Shu

no journal, , 

no abstracts in English

Oral presentation

Visualization and quantitative analysis of secretions from soybean root, 2; Comparison of distribution of the secretions in different culture medium

Yin, Y.-G.; Suzui, Nobuo; Kawachi, Naoki; Ishii, Satomi; Kurita, Keisuke; Nakamura, Takuji*; Shinano, Takuro*; Fujimaki, Shu

no journal, , 

no abstracts in English

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