Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
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Volume 36, Issue 3
Displaying 1-6 of 6 articles from this issue
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  • Behavior of Volatile Pollutants in Seawater Distillation Process
    Toshikatsu HAKUTA
    1982 Volume 36 Issue 3 Pages 127-139
    Published: 1982
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.36.127
    JOURNAL FREE ACCESS
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  • Corrosion and Its Protection in Saline Water
    Nagakazu MIYAUCHI
    1982 Volume 36 Issue 3 Pages 140-148
    Published: 1982
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.36.140
    JOURNAL FREE ACCESS
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  • Limiting Current Density in the Electrodialytic Equipment in the Presence of Some Space on Both Sides of Spacer
    Hirofumi MIYOSHI, Tsugio FUKUMOTO, Takeshi KATAOKA
    1982 Volume 36 Issue 3 Pages 149-153
    Published: 1982
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.36.149
    JOURNAL FREE ACCESS
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    In case a very thin spacer commercially available is inserted between the ion exchange membranes of the electrodialytic equipment, it is often difficult to place the spacer closely to the ion exchange membrane because the thickness of the spacer is thinner than that of the gasket of the ion exchange compartment.
    Therefore, this study was made to investigate the influence of the presence of some space on both sides of the spacer upon the limiting current density of the electrodialytic equipment. And the current density was measured under the presence of various spacings between the ion exchange membrane and the spacer by using a few finds of spacers.
    It was found that the value of the limiting current density in the electrodialytic equipment when some space between the ion exchange membrane and the spacer was present, was smaller than that when the ion exchange comprtment was filled with spacers.
    As the result of this study, the authors have proposed in this paper an equation of the limiting current density in the electrodialytic equipment for three different cases; firstly when the ion exchange compartment is filled with spacers, secondly when it is not provided with spacers, and thirdly when some space between the ion exchange membrane and the spacer is present.
    The limiting current densities obtained by this equation were in good agreement with the results of those measured experimentally regardless of the textile of a spacer. Therefore, it was evident that the value of the limiting current density in the electrodialytic equipment could be estimated by the above equation for all the cases mentioned above.
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  • Fundamental Investigation on Titanic Acid-Cordierite Composite Adsorbent
    Tsunehiro YAMAZAKI
    1982 Volume 36 Issue 3 Pages 154-158
    Published: 1982
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.36.154
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    A fundamental investigation was made on the adsorbent of uranium in sea-water for various titanic acid composite types. From the results of the experiment, the adsorption capacity of titanic acid-impregnated cordierite was increased to 1,900μg-U/g titanic acid when the concentration of uranium in sea-water was less than 0.1μg/l. A feasibility study was tried for 200 ton-U/year plant by honeycomb-shape adsorbent by using an ocean current, and it was proposed that many adsorbent forms with air tank were arranged as the teeth of a saw on the sea surface.
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  • Determination of Molybdenum and Vanadium in Sea-Water by Graphite Furnace Atomic Absorption Spectrophotometry with Oxine-Solvent Extraction
    Studies on the Extraction of Soluble Resources in Sea-Water (Part 1)
    Yoshitaka MIYAI, Kazuhiko SUGASAKA, Shunsaku KATOH
    1982 Volume 36 Issue 3 Pages 159-163
    Published: 1982
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.36.159
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    A study was made on a practical and simple method to be used for the simultaneous analysis of molybdenum and vanadium contained in sea-water. The trace elements of sea-water sample were pre-concentrated by solvent extraction method before these elements were determined by atomic absorption spectrophotometry.
    Oxine was used as a chelating agent, and the both chelated elements could be quantitatively extracted into 1.2.2.2. tetrachloroethane at the pH range of 3.7 to 4.7. The conditions used for the measurement of atomic absorption were that the organic phase (20 mm3) was first injected into a graphite furnace, and then it was dried (150°C-50s), ashed (300°C-50s), and atomized (2,800°C-10s) at the argon flow rate of 40cm3min-1.
    The contents of these elements in sea-water were determined by simplified standard-addition-method, and the results were 10.0μg dm-3 molybdenum and 1.6μg dm-3 vanadium, and well agreed with those previously published by other papers. The cofficient of variation (10 repeated determinations) was found to be 3.2% for molybdenum and 4.1% for vanadium.
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    1982 Volume 36 Issue 3 Pages 164-196
    Published: 1982
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.36.164
    JOURNAL FREE ACCESS
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