Pengaruh penambahan senyawa pengompleks (EDTA dan DTPA) terhadap selektivitas pemisahan logam Cu,Ni dan Zn dengan teknik SLM

Chabibi , Ichwan (2004) Pengaruh penambahan senyawa pengompleks (EDTA dan DTPA) terhadap selektivitas pemisahan logam Cu,Ni dan Zn dengan teknik SLM. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Pengaruh penambahan larutan senyawa pengompleks, ethylenediamine¬tetraasetic acid (EDTA) dan diethylenetriaminepentaacetic acid (DTPA), pada fasa umpan telah dipelajari pada pemisahan selektif campuran ion logam berat (Cu, Ni, dan Zn) dengan teknik Membran Cair Berpendukung (SLM) menggunakan membran berpendukung politetrafluoroetilen (PTFE) yang mengandung campuran tributhyl phosphate (TBP) dan di-2-ethylhexyl phosphoric acid (D2EHPA) dengan perbandingan konsentrasi 1 : 4. Penarnbahan EDTA dengan konsentrasi 1 x 10-4 M dan DTPA dengan konsentrasi 2,5 x 10-5 M mengakibatkan selektivitas pemisahan logam Zn meningkat. Kenaikan persen transpor logam Zn dan penurunan persen tranpor logam Cu dan Ni menunjukan kenaikan selektivitas pemisahan logam Zn. Selektivitas yang didapat dari penambahan DTPA di dalam fasa umpan lebih baik daripada penambahan EDTA di fasa umpan. The effect of a water soluble chelating agent addition, ethylenediamine¬tetraacetic acid (EDTA) and diethylenetriatninepentaacetic acid (DTPA), to the feed phase was studied on the selective permeation of heavy metal ion mixture (Cu, Ni, and Zn) through a supported liquid membrane (SLM) using Politetrafluoroetilen (PTFE) as the supported membrane containing tributhyl phosphate (TBP) and di-2-ethylhexyl phosphoric acid (D2EHPA) with comparison of concentration 1 : 4. Addition of EDTA with concentration 1 x 104 M and of DTPA with concentration 2.5 x 10-5 M caused the increasing of Zn metal separation selectivity. The increase of percentage of Zn metal transport and decrease of percentage of Cu and Ni metal transport showed the increasing of Zn metal permeation selectivity. The selectivity of DTPA presence in the feed phase is better than the presence of EDTA in the feed phase.

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Science and Mathematics > Department of Chemistry
ID Code:31009
Deposited By:Mr UPT Perpus 1
Deposited On:11 Nov 2011 09:03
Last Modified:11 Nov 2011 09:03

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