All issues
Volume 33 (1997)
- Issue 4 Pages 179-
- Issue 3 Pages 97-
- Issue 2 Pages 47-
- Issue 1 Pages 1-
Volume 33, Issue 1
Displaying 1-4 of 4 articles from this issue
- |<
- <
- 1
- >
- >|
-
[in Japanese], [in Japanese], [in Japanese]1997 Volume 33 Issue 1 Pages 1-13
Published: March 15, 1997
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (1931K) -
TOSHIKO NAKAMURA1997 Volume 33 Issue 1 Pages 15-21
Published: March 15, 1997
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSLeakage water survey is the one of important duties in water works and determines unknown water flow either as a drinking water leaking origin, an industrial water leaking origin or others. Picophytoplanlton observation by incident-light fluorescence mirographs has been used as a better approach for determination of industrial water from comparing the conventional approach which used phytoplankton as an indicator on the leakage water survey. A selffluorescence of Synechococcus, for example, was excited and a microscopic observation was taken through a blue or green excitation light filteration when the water resource was a lake or a pond. A FITC was used for dying attached algae and protozoa which were often seen when the water resource was a river for a miroscopic observation.View full abstractDownload PDF (1846K) -
TAKAYUKI NISHIO, TARO YOSHIKURA, NAOYUKI NAGASHIO, HISAO ITOH1997 Volume 33 Issue 1 Pages 23-34
Published: March 15, 1997
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSA BOD biosensor suitable for measuring low BOD samples was developed using Trichosporon cutaneum, a yeast newly isolated from the mixed liquor of a sewage treatment plant. This strain maintains a stable response to secondary effluent from sewage treatment plants for over a month whereas measurements taken with a bio-electrode with immobilized T. cutaneum IFO10466, the authorized strain for BOD sensors in Japan, were unsatisfactory. Strain OKK12 gives stable and strong response to effluent as well as raw sewage of several sewage treatment plants. The ability of the isolated yeast to degrade refractory compounds in an effluent from sewage treatment plant such as lignin was elucidated by gel permeation chromatography.View full abstractDownload PDF (1252K) -
NAOYUKI MIYATA, MASAKO YAMASHITA, MICHIHIKO IKE, KEISUKE IWAHORI, MASA ...1997 Volume 33 Issue 1 Pages 35-45
Published: March 15, 1997
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe white rot fungi that are able to decolorize melanoidin were examined for the ability to remove the color from heat treatment liquor of waste sludge (HTL) obtained from the sewage wastewater treatment plant. Coriolus hirsutus was selected, and the fungal HTL decolorization was further characterized since the strain showed the highest HTL-decolorizing ability. The decolorization of the HTL supplemented with 20 g/l glucose was observed concomitantly by the fungal growth, and the decolorization efficiency reached 80% within 8 days. Fractionation of the decolorized liquor with XAD-7 resin revealed a considerable color reduction of fraction III, which is one of two major colored fractions of intact HTL, and a complete color removal of fraction I, which is the other one. Incubation of the fraction III components with the fungus resulted in a color reduction up to about 70%. Only 18% of the color reduction level was due to the adsorption of the components onto the pellets. Incubation of the fraction I components, on the other hand, also demonstrated that a small portion of the color reduction was due to the adsorption. Therefore, the color removal of HTL by C. hirsutus resulted from a substantial degradation of the colored components.View full abstractDownload PDF (1018K)
- |<
- <
- 1
- >
- >|