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Volume 40 (1986 - 198･･･
- Issue 6 Pages 323-
- Issue 5 Pages 265-
- Issue 4 Pages 211-
- Issue 3 Pages 135-
- Issue 2 Pages 78-
- Issue 1 Pages 3-
Volume 40, Issue 3
Displaying 1-9 of 9 articles from this issue
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Studies on the Property of Matter of Common Salt (Part 1)Tomio SHINOHARA, Kiyomi SOGA, Kenichi KAGIWADA1986 Volume 40 Issue 3 Pages 135-140
Published: 1986
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSA test was made to study how to measure the adhesion of salt. For this purpose, a sample of 200grams of common salt was made pass through a vibration sieve and fall down from the height of 50cm to an inclined panel equipped with a piece of sand-paper.
Various parameters of the test were compared with the adhesion of salt to several kinds of food, and the following points were clarified:
(1) For measuring the adhesion of salt, it was the most suitable way to indicate the angle ofpanel inclination θA when 6 grams of salt remained on the panel of 200×200mm in size and equipped with the 600 mesh sand-paper.
(2) The correlation coefficient of adhesion (θA) to the size of particles was 0.949. The shape of salt proved to be an influential factor on the adhesion.
(3) A strong interrelation was found between the adhesion (θA) and the amount of salt adhered to various kinds of food.View full abstractDownload PDF (3889K) -
Studies on Environmental Analysis (Part 25)Akihiro KIMURA, Akio YONEDA, Yoshimichi MAEDA, Takatugu AZUMI1986 Volume 40 Issue 3 Pages 141-145
Published: 1986
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSA preconcentration method with combined diethyldithiocarbamate (DDTC) and iron (III) was studied for X-ray fluorescence determination of molybdenum in sea water.
Ten grams of sodium chloride, one milligram of iron (III) and 10ml of 10w/v% sodium acetate buffer were added to 500ml of sample, which was adjusted to pH3.0, by adding 3ml of 2w/v% DDTC solution. The coprecipitate containing molybdenum was then collected on a membrane filter paper (0.45μm), dried at room temperature and delivered to the X-ray fluorescence analysis.
Limits of detection and lower determination of this method were 0.3 μg/l and 0.9μg/l, respectively. This method was applied to determination of molybdenum in sea water. The analytical results found by the calibration curve method were in good agreement with those by the standard addition method. The relative standard deviation in respective five determinations of sea water was 2.9%. It was concluded that the calibration curve method was available for the determination of molybdenum in sea water.View full abstractDownload PDF (3306K) -
Flowability of Kitchen Salt (Part 1)Akihiro GOTOH, Humikazu IKASAKI, Mitsutaka KAWAMURA1986 Volume 40 Issue 3 Pages 146-151
Published: 1986
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSInternal friction coefficient and bulk density were proposed as parameters for salt flowability, and a direct shear tester equipped with a press loading system were employed to measure the above mentioned properties for salt. In addition, the influence of a moisture content on the flowability of salt was examined.
Kitchen grade salt was prepared for the experiments. It was found that the flowability of salt depended on the normal stress applied and the moisture content. It should be noted that in the lower stress the flowability of dry salt was superior to that of moisture salt, whereas the flowability of moisture salt was superior to that of dry salt in the higher stress.View full abstractDownload PDF (3741K) -
Noriaki NAKAZAWA, Makoto AKEO, Masahito SATO, Teiji OKUBO1986 Volume 40 Issue 3 Pages 152-158
Published: 1986
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSThe water produced by a desalting evaporator is usually very pure. However, if sea water, especially in an area of a large city, contains ammonia as one of it's volatile pollutants, it is supposed that some of the ammonia enters the product water. The behavior of ammonia is affected by temperature, pH and salinity in sea water. Therefore, it is difficult to predict the behavior of ammonia in a desalting evaporator.
In this paper, the behavior of ammonia in a multi-stage flash evaporator (MSF) is investigated by using simulation program which theoretically considered the effects upon ammonia behavior about temperature, pH, salinity, the buffer action of sea water and the oxgen concentration in solution.
As a result, experimental data of ammonia behavior in the 3,000 m3/day, 39 stages desalting flash evaporation test plant are simulated accurately by the computer estimation. Particularly, the maximum point of ammonia concentration in the product water in the early stage of adding ammoia chloride to the make-up sea water can be explained for the first time in this theoretical estimation methods. It is clear that the behavior or ammonia in a MSF plant can be exactly estimated under varied conditions by using this methods.View full abstractDownload PDF (4605K) -
Takaji AKIYA, Shigetake KAWASAKI1986 Volume 40 Issue 3 Pages 159-173
Published: 1986
Released on J-STAGE: February 19, 2013
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Takeshi KAJIHARA1986 Volume 40 Issue 3 Pages 174-181
Published: 1986
Released on J-STAGE: February 19, 2013
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Mineo KOBAYASHI1986 Volume 40 Issue 3 Pages 182-189
Published: 1986
Released on J-STAGE: February 19, 2013
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Nobumitsu KITASHIMA1986 Volume 40 Issue 3 Pages 190-196
Published: 1986
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSDownload PDF (5152K) -
Kiyoshi KATAWAKI1986 Volume 40 Issue 3 Pages 197-205
Published: 1986
Released on J-STAGE: February 19, 2013
JOURNAL FREE ACCESSDownload PDF (6040K)
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