Kiyokazu Okawa
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Explore the profile of Kiyokazu Okawa including associated specialties, affiliations and a list of published articles.
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6
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12
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Recent Articles
1.
Okawa K, Suzuki K, Takeshita T, Nakano K
Water Res
. 2007 Jan;
41(5):1045-51.
PMID: 17224174
The objective of this study is to clarify the regeneration of granular activated carbon (GAC) adsorbed trichloroethylene (TCE) using wet peroxide oxidation (WPO). TCE and TOC concentrations decreased during WPO,...
2.
Okawa K, Suzuki K, Takeshita T, Nakano K
J Hazard Mater
. 2005 Aug;
127(1-3):68-72.
PMID: 16081206
The objectives of this study are to clarify the degradation mechanism of chemical substances using wet peroxide oxidation (WPO) under mild condition (150 degrees C) and to confirm the removal...
3.
Okawa K, Tsai T, Nakano Y, Nishijima W, Okada M
Chemosphere
. 2004 Dec;
58(4):523-7.
PMID: 15620744
The objective of this study is to find metal ions that enhance the ozone decomposition of chlorinated organic substances in acetic acid. Although the pseudo-first order degradation rate constant for...
4.
Okawa K, Nakano Y, Nishijima W, Okada M
Chemosphere
. 2004 Oct;
57(9):1231-5.
PMID: 15504485
The objectives of this study are to clarify the behavior of humic substances throughout the processes of 2,4-dichlorophenol (2,4-DCP) adsorption on granular activated carbon (GAC) from water and extraction into...
5.
Tsai T, Okawa K, Nakano Y, Nishijima W, Okada M
Chemosphere
. 2004 Oct;
57(9):1151-5.
PMID: 15504474
The effects of chemical characteristics of organic solvents on the decomposition rate constants of undissociative trichloroethylene (TCE) and dissociative 2,4-dichlorophenol (2,4-DCP) by ozonation were studied. The TCE and 2,4-DCP decomposition...
6.
Nakano Y, Okawa K, Nishijima W, Okada M
Water Res
. 2003 May;
37(11):2595-8.
PMID: 12753836
Performance on the ozonation of hazardous chemicals in non-aqueous solutions, i.e. organic solvents, was studied in comparison with those in water. The specific conclusions obtained from this study are as...