Black Sea Journal of Engineering and Science

Yazarlar: Gülçin ÖZEVCİ

Konular:Mühendislik

Anahtar Kelimeler:Supported liquid membranes,Separation,Immobilization,Stability,Transport

Özet: In this study, as a promising alternative separation method supported liquid membranes (SLMs) are investigated. SLM is a structure that liquid immobilized into pores of a thin microporous support. Supports have different pore size and character. Preparation methods of SLM, transport mechanism and separation of element or compound from feed to stripping phase are clarified. Proper extractant is decided by considering the preferred separated gas, metal or compound and extractant is immobilized into pores of membrane. Afterwards, prepared SLM is put into middle of the two glass diffusion cell ad experiments are carried out. By SLM, extraction and strip phases occur in one-step and it has possibility of achieving high separation factors. If it is compared with other separation methods the extractant amount used is fewer than the others. Thus, the amount of chemicals and contaminants could be reduced. However, despite several advantages the membranes are unstable and their lifetimes are limited so it is significant choosing proper membrane support, extractant and diluter. Support membrane is characterized by SEM, FESEM, and SEM-EDX. They have applications in numerous areas such as analytic, biotechnology and environmental science. In recent years, nuclear industry has an increasing trend to SLMs. In separation of actinides and fission products flat sheet SLMs have potential but in industrial applications it is difficult to scale up. Hence it is significant for Turkey attempts to construct nuclear power plants and have nuclear technology like other countries to enhance flat sheet SLMs which have potential in nuclear fuel cycle steps

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