Removal of high concentration dimethyl methylphosphonate in the gas phase by repeated-batch reactions using TiO2

Mera, Nobuaki; Hirakawa, Tsutomu; Sano, Taizo; Takeuchi, Koji; Seto, Yasuo; Negishi, Nobuaki

doi:10.1016/j.jhazmat.2009.12.029

Cited by 14 publications

(4 citation statements)

References 23 publications

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“…Molecular imprinting on titanium dioxide was found to be very effective in the degradation of DIMP . The high activity of TiO 2 under UV-light irradiation was observed in photocatalytic decomposition of DMMP . Mesoporous titania containing gold nanoparticles was prepared as a photocatalyst for the decontamination of soman. , The catalyst operates under ambient light and is considered environmentally friendly.…”

Section: Decomposition Reactionsmentioning

confidence: 99%

Destruction and Detection of Chemical Warfare Agents

et al. 2011

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Section: Decomposition Reactionsmentioning

confidence: 99%

Destruction and Detection of Chemical Warfare Agents

et al. 2011

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“…115) We also tried to build up the automated continuous decomposition system adopting photocatalysis under UV light irradiation, and ascertained the continuous decomposition of GB simulant dimethylmethylphosphonate by the repeated-batch reaction experiment. 116) This type of automatic air purification equipment can be used in the hot zone to diminish the air level of dangerous CWAs.…”

Section: Development Of Decomposing Technology Using Photocatalysismentioning

confidence: 99%

Research and Development of On-site Decontamination System for Biological and Chemical Warfare Agents

Seto

2011

JOURNAL OF HEALTH SCIENCE

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Biological and chemical warfare agents (BCWAs) are diverse in nature including synthetic low molecular weight chemical warfare agents (gaseous choking and blood agents), volatile nerve gases and blister agents, nonvolatile vomit agents and lachrymators, biological toxins (polar low molecular weight toxins and proteinous toxins), and microorganisms (viruses, rickettsia, chlamydia and bacteria). In the consequence management against chemical and biological warfare terrorism, speedy decontamination of casualties, goods, items and equipments, buildings and field is required for the minimization of the terrorism damage. At present, washing casualties and contaminated materials with large volumes of water is the basic way, and hypochlorite solution is mainly used to decompose BCWAs. However, it still remains unsolved how to dispose the waste water contaminated with BCWAs, and decontaminating reagents have serious problems of high toxicity to human, despoiling nature to environment, long finishing time and non-durability. In addition, the present decontamination technologies are not effective, nonspecifically affecting the surrounding non-target materials. Therefore, it is the urgent matter to build up usable decontamination system surpassing the present system. The author introduces the joint project of research and development of the novel decontamination system against BCWAs, in the purpose of realizing non-dangerous, rapid, specific, effective and economical on-site decontamination. The project consists of establishment of the evaluation methods for decontamination, and verification of the present technologies and utilization of bacterial organophosphorus hydrolase, development of specific adsorptive elimination technologies using molecular recognition devices, and development of deactivation technologies using photocatalysis.

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“…For CWAs simulant, dimethyl sulfide (DMS), diethyl sulfide (DES) and 2-chloroethyl ethyl sulfide (2CEES) as 2,2 -dichloro diethyl sulfide (sulfur mustard: HD) simulant as a blister agent [18][19][20][21][22][23][24][25][26][27][28], and dimethyl methyl phosphonate (DMMP) [34][35][36][37][38][39][40][41][42][43] and di-isopropylfluorophosphate (DFP) [44,45] as isopropyl methylphosphonofluoridate, Sarin (GB) and trimethylpropyl methylphosphonofluoridate, tabun (GD) simulant as a nerve agent have been known for major simulants. Complete decomposition of these simulants by TiO 2 photocatalysis and the detailed decomposition mechanism at the surface of TiO 2 photocatalyst are well elucidated and widely known.…”

Section: Introductionmentioning

confidence: 99%