EMULSION LIQUID MEMBRANE FOR HEAVY METALS REMOVAL: EMULSION BREAKING STUDY

Adhi Kusumastuti; Samsudin Anis; A. L. Ahmad; B. S. Ooi; M. M. H. Shah Buddin

doi:10.11113/jt.v82.14539

Authors

Adhi Kusumastuti Faculty of Engineering, Universitas Negeri Semarang, Kampus UNNES Sekaran, 50229, Semarang, Indonesia
Samsudin Anis Faculty of Engineering, Universitas Negeri Semarang, Kampus UNNES Sekaran, 50229, Semarang, Indonesia
A. L. Ahmad School of Chemical Engineering, Engineering Campus, USM, 14300, Nibong Tebal, Penang, Malaysia
B. S. Ooi School of Chemical Engineering, Engineering Campus, USM, 14300, Nibong Tebal, Penang, Malaysia
M. M. H. Shah Buddin Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor 40450, Malaysia

DOI:

https://doi.org/10.11113/jt.v82.14539

Keywords:

Emulsion liquid membrane, heavy metals, removal, emulsion breaking, demulsification

Abstract

Emulsion liquid membrane (ELM) method has been widely applied in the separation process as the alternative of liquid/liquid extraction. This study compared the application of microwave, ultrasonic probe, and centrifuge in breaking the used emulsion. Demulsification efficiency was investigated in term of water content in the membrane phase solution before and after demulsification. The results showed that the use of microwave to break the used emulsion provided demulsification efficiency of 98.10%, while application of ultrasonic probe was able to break emulsion at efficiency of 98.45%. In the meantime, demulsification efficiency of almost 97% was achieved when employing centrifuge at centrifugation speed of 3000 rpm. Considering the energy consumption, it is recommended to apply microwave irradiation for emulsion breaking. It could save energy up to 97% and 99% compared to that of ultrasonic probe and centrifuge, respectively.

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