Submicron-sized powdered activated carbon (PAC) was produced from a commercially available normal PAC by a bead mill. The submicron PAC decomposed dichloramine and nitrogen trichloride, impairing aesthetic quality with chlorinous odor, at a much faster rate than did normal PAC. Moreover, decomposition rates were faster for dichloramine and nitrogen trichloride than for monochloramine and free chlorine. Selective removal of chlorinous odors among chlorine compounds in a short time was thereby possible. The earthy–musty compound geosmin was also much more rapidly removed by adsorption on submicron PAC than on normal PAC. The increased removal rate was partly due to the adsorption capacity increase owing to the particle size reduction of PAC to submicron range, which accounted for 40% of the improvement of geosmin removal at a PAC contact time of 10 min.
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December 2008
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
December 01 2008
Submicron-sized activated carbon particles for the rapid removal of chlorinous and earthy-musty compounds
Yoshihiko Matsui;
1Division of Built Environment, Graduate School of Engineering, Hokkaido University, N13W8, Sapporo, 060-8628, Japan
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Kenji Murai;
Kenji Murai
1Division of Built Environment, Graduate School of Engineering, Hokkaido University, N13W8, Sapporo, 060-8628, Japan
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Hiroshi Sasaki;
Hiroshi Sasaki
1Division of Built Environment, Graduate School of Engineering, Hokkaido University, N13W8, Sapporo, 060-8628, Japan
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Koichi Ohno;
Koichi Ohno
1Division of Built Environment, Graduate School of Engineering, Hokkaido University, N13W8, Sapporo, 060-8628, Japan
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Taku Matsushita
Taku Matsushita
1Division of Built Environment, Graduate School of Engineering, Hokkaido University, N13W8, Sapporo, 060-8628, Japan
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Journal of Water Supply: Research and Technology-Aqua (2008) 57 (8): 577–583.
Article history
Received:
August 06 2007
Accepted:
December 25 2007
Citation
Yoshihiko Matsui, Kenji Murai, Hiroshi Sasaki, Koichi Ohno, Taku Matsushita; Submicron-sized activated carbon particles for the rapid removal of chlorinous and earthy-musty compounds. Journal of Water Supply: Research and Technology-Aqua 1 December 2008; 57 (8): 577–583. doi: https://doi.org/10.2166/aqua.2008.070
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