| Summary: | 碩士 === 國立臺北科技大學 === 材料及資源工程系碩士班 === 90 === Heavy metals contamination is an important environmental issue. Conventional practices for heavy metal treatment including solidification and vetrification. Many heavy metals have become important materials for the industrial applications. Therefore, the treatment of waste containing heavy metal also drew great attention for both industrial and environmental sectors. However, most of the treatment methods can be classified into two main categories, namely the fixation of heavy metal and total removal of heavy metal. In general, total removal of heavy metal do not focus on the separation of heavy metals into valuable pure form, consequently, these heavy metals are not of any value. In order to reduce the environmental problem and achieve the purpose of resource recycling, two separation technologies were recommended in this study, by combining solvent extraction and ion exchange principles.
The purpose of this study is to develop two new types of selective resin to facilitate the separation of metal ions（Ni、V、Mo）in solution. One type selective resin involves the physical incorporation of extractant (EIR). This new type of selective resin combines the advantageous characteristics of solvent extraction and ion exchange resin. The second type of selective resin was prepared by chemically immobilization of extractant onto the ion exchange resin. , than prepared by physically and chemically immobilizing ion chelators on the surface of organic ion exchange resin.
The experimental results of selective separation show that both new types of selective resins have good separation capability toward Ni, V and Mo. For the purification of V and M, EIR could increase the relative concentration of V from 52﹪to 99%, while the D2EHPA modified Amberlite 200 could increase the relative concentration of Mo from 45﹪to 78﹪.
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