海水の蒸発過程での生成析出物の成分変化について(Component Change of the Salt Produced in the Process of Sea Water Evaporation)
- 標題
- 海水の蒸発過程での生成析出物の成分変化について(Component Change of the Salt Produced in the Process of Sea Water Evaporation)
- 作者
- 水戸部 祐子, 鈴木 映一, L.A. GUZMAN, 清水 健司(Yuko MITOBE, Eiichi SUZUKI, L.A. GUZMAN, Kenji SHIMIZU)
- 文件屬性
- 日本研究
- 知識分類
- 礦物質分離
- 出版年
- 2006
- 刊名
- 日本海水学会誌
- 卷
- 60
- 期
- 4
- 頁
- p. 306-310
- 點閱數
- 4749
摘要
本研究では, 蒸発法を用いた海水からの製塩方法について検討し, 装置設計および操作条件の確立を目的として, 塩の組成と形状の制御方法を捉えることを試みた. 用いた海水は, 野田沖海水 (岩手県野田村沖1km, 水深30m) と三睦沖海洋深層水 (岩手県宮古市トドヶ崎東方31km, 水深680m) で, 2種類の海水の違いについて報告する.
本論文で用いた海水では, 沈殿結晶の形状に違いがみられたが, 採取塩では, 結晶形状および組成の変化はほとんどみられなかった.
蒸発量の違いにおいて沈殿結晶と採取塩の形状の変化および組成の定量的変化を明らかにできた. また, 蒸発濃縮の初期過程における硫酸カルシウムの析出過程を明確にした.
A salt production method using the evaporation procedure was investigated. The method for controlling the composition and the shape of salt was examined, which is useful in order to design the apparatus and establish the operating condition. The seawater from Noda (1 km from NODA, d epth 30 m) and the Sanriku deep seawater (31 km east from TODOGASAKId, epth 680 m) were used and the difference between two kinds of seawaters was reported.
A distinct difference was found in the shapes of the produced crystals obtained from individual seawater. However, the extracted salts showed no significant difference in the shape and the composition of crystals.
The change in the shape as well as the quantitative change in the composition of the produced crystals and the extracted salts by the amount of evaporation was revealed. The deposition process of calcium sulfate in the early stage of evaporation was also clarified.
本論文で用いた海水では, 沈殿結晶の形状に違いがみられたが, 採取塩では, 結晶形状および組成の変化はほとんどみられなかった.
蒸発量の違いにおいて沈殿結晶と採取塩の形状の変化および組成の定量的変化を明らかにできた. また, 蒸発濃縮の初期過程における硫酸カルシウムの析出過程を明確にした.
A salt production method using the evaporation procedure was investigated. The method for controlling the composition and the shape of salt was examined, which is useful in order to design the apparatus and establish the operating condition. The seawater from Noda (1 km from NODA, d epth 30 m) and the Sanriku deep seawater (31 km east from TODOGASAKId, epth 680 m) were used and the difference between two kinds of seawaters was reported.
A distinct difference was found in the shapes of the produced crystals obtained from individual seawater. However, the extracted salts showed no significant difference in the shape and the composition of crystals.
The change in the shape as well as the quantitative change in the composition of the produced crystals and the extracted salts by the amount of evaporation was revealed. The deposition process of calcium sulfate in the early stage of evaporation was also clarified.