Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
Volume 36, Issue 6
Displaying 1-7 of 7 articles from this issue
  • Chapter 1 and Chapter 2
    Masayoshi MURAKAMI
    1983 Volume 36 Issue 6 Pages 359-360
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
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  • Norio TAKAGI, Shunsaku KATOH, Kazuhiko SUGASAKA
    1983 Volume 36 Issue 6 Pages 374-375
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
    An abrasion study of granular adsorbent was made in order to establish the standard method for estimating the strength of the adsorbent during the recovery process of uranium from sea water by using a fluidized bed. The hydrophilic poly (acrylamidoxime) resin and the titaniumactivated carbon composite adsorbents granulated by polyvinyl alcohol or poly acrylicacid hydrazide were used as the sample adsorbents. The abrasion losses of the adsorbents by magnetic stirring, horizontal shaking, and vertical shaking were compared with those yielded in the fluidized bed for 10days.
    For both the vertical and horizontal shakings, the abrasion losses of three kinds of adsorbents by shaknngs for 5minutes were proportional to those by the fluidization. The linear relationship was not found in the case of magnetic stirring, and the granulated adsorbents showedremarkably high abrasion rates as compared with the resin.
    From these results, it was concluded that shaking method was suitable for the estimation of the abrasion loss of adsorbent in the fluidized bed.
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  • Studies of the Natural Gas Brine (Part 13)
    Kyunosuke MAJIMA, Kazuko KATSUKI, Shumpei OKA
    1983 Volume 36 Issue 6 Pages 381-382
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
    This report covers part of experiments which have been carried out to elucidate the foundamental properties of isotllermal evaporation at 110°C for the natural gas brine and the ion-exchange membrane brine. In these experiments, the isotherms and invariant pohlts at 110°C of the ternary system KCl-MgCl2-H2O and the quaternary system KCI-MgCl2-CaCl2-H2O were obtained.
    As are sult, it was found that for the ternary system KCI-MgCl2-H2O, the values of the isotherms became greater in similar formsas temperature rose, that is, at 50°C, 75°C, and 110°C, and that the values of potassium chloride and magnesium chloride of the invariant points were greater likewise.
    In the case of the quaternary system KCl-MgCl2-CaCl2-H2O, it was found that the values at the invariant points T, V, amd W for potassium chloride and magnesium chloride increased but thevalues for calcium chloride decreased. However, as for V at 75°C and U1 and U2 at 110°C, the value for potassium chloride proved to be decreased, whereas that for magnesium chloride proved to be increased. In the case of calcium chlofide, value at U1 was decreased, and the value at U2 was increased. As temperature rose, the crystallization region of the double salt CaCl2·KCl became larger, where as that of MgCl2·6H2O was much smaller.
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  • Katsuya UESUGI, Shigeroku YAMAGUCHI, Yoshio ISHIHARA
    1983 Volume 36 Issue 6 Pages 387-388
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
    An atomic absorption spectrophotometric method combined with 2-hydroxy-1-naphthaldoxime (HNA) extraction technique was studied for the determination of manganese in sea water and common salt. Manganese formed a complex with HNA, and was extracted into chloroform. The optimum conditions on the extraction of manganese were examined. The effect of coexisting diverse substances in the aqueous phase were also examined. The extract was decomposed with nitric acid-perchloric acid mixture, and then dissolved with 0.1 N hydrochloric acid. The resulting solution was sprayed into an acetylene-air fiame. Less than 10μg of manganese was quantitatively extracted into 10ml of 0.02 M-HNA chloroform solution from aqueous solution at pH 10, by shaking for 10 min. When a known amount of manganese was added to the sea water samples, the manganese was recovered satisfactorily. The coefficient of variation was 2.4% at 10μg of manganese (n=10). Some samples of sea water, common salt and imported salt were analized.
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  • Shoichiro YOSHIDA
    1983 Volume 36 Issue 6 Pages 392-393
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
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  • Report of The Work Group for Testing Method of Adsorbent on Extraction of Uranium from Seawater, The Workshop for Effective Uses of Seawater Resources, The Society of Sea Water Science, Japan
    Hidetake KAKIHANA, Noboru OGATA
    1983 Volume 36 Issue 6 Pages 403-408
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
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  • Takeo YAMABE
    1983 Volume 36 Issue 6 Pages 409-414
    Published: 1983
    Released on J-STAGE: February 19, 2013
    JOURNAL FREE ACCESS
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