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Mitsumasa Okada
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Journal Articles

Comparison of ozonation and AOPs combined with biodegradation for removal of THM precursors in treated sewage effluents

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Kazuaki Ito, Wen Jian, Wataru Nishijima, Aloysius U. Baes, Eiji Shoto ...
Water Sci Technol (1998) 38 (7): 179–186.
DOI: https://doi.org/10.2166/wst.1998.0291
Date Online: 01 October 1998
View articletitled, Comparison of ozonation and AOPs combined with biodegradation for removal of THM precursors in treated sewage effluents View PDF for article titled, Comparison of ozonation and AOPs combined with biodegradation for removal of THM precursors in treated sewage effluents
Journal Articles

The performance of an ozonation-biological activated carbon process under long term operation

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Wataru Nishijima, Woo Hang Kim, Eiji Shoto, Mitsumasa Okada
Water Sci Technol (1998) 38 (6): 163–169.
DOI: https://doi.org/10.2166/wst.1998.0249
Date Online: 01 September 1998
View articletitled, The performance of an ozonation-biological activated carbon process under long term operation View PDF for article titled, The performance of an ozonation-biological activated carbon process under long term operation
Journal Articles

Particle separation as a pretreatment of an advanced drinking water treatment process by ozonation and biological activated carbon

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Wataru Nishijima, Mitsumasa Okada
Water Sci Technol (1998) 37 (10): 117–124.
DOI: https://doi.org/10.2166/wst.1998.0390
Date Online: 01 May 1998
View articletitled, Particle separation as a pretreatment of an advanced drinking water treatment process by ozonation and biological activated carbon View PDF for article titled, Particle separation as a pretreatment of an advanced drinking water treatment process by ozonation and biological activated carbon
Journal Articles

Micropollutant removal with saturated biological activated carbon (BAC) in ozonation–BAC process

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Hang Kim Woo, Wataru Nishijima, Aloysius U. Baes, Mitsumasa Okada
Water Sci Technol (1997) 36 (12): 283–298.
DOI: https://doi.org/10.2166/wst.1997.0458
Date Online: 01 December 1997
View articletitled, Micropollutant removal with saturated biological activated carbon (BAC) in ozonation–BAC process View PDF for article titled, Micropollutant removal with saturated biological activated carbon (BAC) in ozonation–BAC process
Journal Articles

Improvement of biodegradation of organic substance by addition of phosphorus in biological activated carbon

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Wataru Nishijima, Eiji Shoto, Mitsumasa Okada
Water Sci Technol (1997) 36 (12): 251–257.
DOI: https://doi.org/10.2166/wst.1997.0454
Date Online: 01 December 1997
View articletitled, Improvement of biodegradation of organic substance by addition of phosphorus in biological activated carbon View PDF for article titled, Improvement of biodegradation of organic substance by addition of phosphorus in biological activated carbon
Journal Articles

Study of the reactor with down-flow injection on the characteristics of ozonation

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Takayuki Morioka, Yasuhiro Kato, Hiroshi Hoshikawa, Mitsumasa Okada, Takeo Moniwa
Water Sci Technol (1997) 36 (12): 367–374.
DOI: https://doi.org/10.2166/wst.1997.0466
Date Online: 01 December 1997
View articletitled, Study of the reactor with down-flow injection on the characteristics of ozonation View PDF for article titled, Study of the reactor with down-flow injection on the characteristics of ozonation
Journal Articles

Competitive removal of dissolved organic carbon by adsorption and biodegradation on biological activated carbon

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Woo Hang Kim, Wataru Nishijima, Eiji Shoto, Mitsumasa Okada
Water Sci Technol (1997) 35 (7): 147–153.
DOI: https://doi.org/10.2166/wst.1997.0271
Date Online: 01 April 1997
View articletitled, Competitive removal of dissolved organic carbon by adsorption and biodegradation on biological activated carbon View PDF for article titled, Competitive removal of dissolved organic carbon by adsorption and biodegradation on biological activated carbon
Journal Articles

Adsorption and ion exchange of some groundwater anion contaminants in an amine modified coconut coir

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Aloysius U. Baes, Tetsuji Okuda, Wataru Nishijima, Eiji Shoto, Mitsumasa Okada
Water Sci Technol (1997) 35 (7): 89–95.
DOI: https://doi.org/10.2166/wst.1997.0264
Date Online: 01 April 1997
View articletitled, Adsorption and ion exchange of some groundwater anion contaminants in an amine modified coconut coir View PDF for article titled, Adsorption and ion exchange of some groundwater anion contaminants in an amine modified coconut coir
Journal Articles

Effects of adsorbed substances on bioactivity of attached bacteria on granular activated carbon

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Wataru Nishijima, Takao Akama, Eiji Shoto, Mitsumasa Okada
Water Sci Technol (1997) 35 (8): 203–208.
DOI: https://doi.org/10.2166/wst.1997.0314
Date Online: 01 April 1997
View articletitled, Effects of adsorbed substances on bioactivity of attached bacteria on granular activated carbon View PDF for article titled, Effects of adsorbed substances on bioactivity of attached bacteria on granular activated carbon
Journal Articles

Origin of trihalomethane (THM) precursors in Kurose River, Hiroshima, Japan

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Ritchelita P. Galapate, Atsushi Kitanaka, Kazuaki Ito, Tetsuo Mukai, Eiji Shoto ...
Water Sci Technol (1997) 35 (8): 15–20.
DOI: https://doi.org/10.2166/wst.1997.0292
Date Online: 01 April 1997
View articletitled, Origin of trihalomethane (THM) precursors in Kurose River, Hiroshima, Japan View PDF for article titled, Origin of trihalomethane (THM) precursors in Kurose River, Hiroshima, Japan
Journal Articles

Pilot plant study on ozonation and biological activated carbon process for drinking water treatment

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Woo Hang Kim, Wataru Nishijima, Eiji Shoto, Mitsumasa Okada
Water Sci Technol (1997) 35 (8): 21–28.
DOI: https://doi.org/10.2166/wst.1997.0293
Date Online: 01 April 1997
View articletitled, Pilot plant study on ozonation and biological activated carbon process for drinking water treatment View PDF for article titled, Pilot plant study on ozonation and biological activated carbon process for drinking water treatment
Journal Articles

Uncertainty and transient contamination of river water by agricultural use of industrial products: release and run-off of hazardous chemicals from agricultural plastic film

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Mitsumasa Okada, Kyung Jin Cho, Tetsuo Mukai, Kazuto Takimoto
Water Sci Technol (1996) 33 (2): 27–35.
DOI: https://doi.org/10.2166/wst.1996.0035
Date Online: 01 January 1996
View articletitled, Uncertainty and transient contamination of river water by agricultural use of industrial products: release and run-off of hazardous chemicals from agricultural plastic film View PDF for article titled, Uncertainty and transient contamination of river water by agricultural use of industrial products: release and run-off of hazardous chemicals from agricultural plastic film
Journal Articles

Fate of tricresyl phosphate isomers in Kurose River (Japan)

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Cho Kyung Jin, Kazuto Takimoto, Mitsumasa Okada
Water Sci Technol (1994) 30 (10): 189–197.
DOI: https://doi.org/10.2166/wst.1994.0527
Date Online: 01 November 1994
View articletitled, Fate of tricresyl phosphate isomers in Kurose River (Japan) View PDF for article titled, Fate of tricresyl phosphate isomers in Kurose River (Japan)
Journal Articles

Simultaneous Removal of Phosphorus and Nitrogen by Sequencing Batch Reactor Activated Sludge Process

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Mitsumasa Okada, Ryuichi Sudo
Water Sci Technol (1985) 17 (11-12): 315–316.
DOI: https://doi.org/10.2166/wst.1985.0251
Date Online: 01 November 1985
View articletitled, Simultaneous Removal of Phosphorus and Nitrogen by Sequencing Batch Reactor Activated Sludge Process View PDF for article titled, Simultaneous Removal of Phosphorus and Nitrogen by Sequencing Batch Reactor Activated Sludge Process