| Project/Area Number |
11450200
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Civil and environmental engineering
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
KUBA Takahiro Faculty of Engineering, KYUSHU UNIVERSITY Associate Professor, 大学院・工学研究院, 助教授 (60284527)
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| Co-Investigator(Kenkyū-buntansha) |
YAMANISHI Hiroyuki Faculty of Engineering, KYUSHU UNIVERSITY Research Associate, 大学院・工学研究院, 助手 (20240062)
OHISHI Kyoko Faculty of Engineering, KYUSHU UNIVERSITY Research Associate, 大学院・工学研究院, 助手 (20110835)
KUSUDA Tetsuya Faculty of Engineering, KYUSHU UNIVERSITY Professor, 大学院・工学研究院, 教授 (50037967)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥15,200,000 (Direct Cost: ¥15,200,000)
Fiscal Year 2000: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1999: ¥11,700,000 (Direct Cost: ¥11,700,000)
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| Keywords | Intelligent material / Water quality / Waste water treatment / Functional polymer gel / Photoreactive gel / Denitrification / Dephosphatation / Thermo-responsive gel |
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| Research Abstract |
Biomass immobilization technique has been put to practical use in advanced waste water treatment processes. The conventional immobilization technique, however, poses a problem with respect to mass transfer resistances for substrate and product molecules to the microorganisms inside immobilization gel matrices. The problem can be solved by utilization of functional gels as an immobilizing medium, which reversibly shrink and swell when external conditions change such as temperature, pH, solvent composition and so on. In this study, visible light-stimulus-response NIPA-CH(N-isopropylacrylamide-Chlorophyllin) gels were applied to examine a possibility of the utilization in waste water treatment processes. The purpose of this study was to investigate physical properties of the NIPA-CH gels such as swelling ratios, repetitive behaviour, and the influence of the immobilized microorganisms upon the swelling capacities. The NIPA-CH gels showed sufficient swelling ratios under cyclic visible light stimuli, and it was suggested that the mass transfer of substrates would be enhanced by the shrinking and swelling effects of the visible light-stimulus-response NIPA-CH gels.
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