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All Journal Indonesia Chimica Acta Al-Kimia
Djabal Nur Basir, Djabal
Department Of Chemistry, Faculty Of Mathematics And Natural Science, Universitas Hasanuddin, Makassar 90245, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Selektifitas Transpor Lantanum Dari Mineral Monasit Dengan Teknik Supported Liquid Membrane Nur Basir, Djabal
Indonesia Chimica Acta Volume 2 No 1 - June 2009
Publisher : Indonesia Chimica Acta

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Abstract

Transport selectivity of lanthanum from monazite mineral by supported liquid membrane, SLM technique has been studied. The supporting membrane, PTFE(polytetrafluoroethylene) was activated by immersing in a mixture of TBP(trybuthylphosphate) and D2EHPA (di-2-ethylhexyl phosphoric acid) at the composition of concentration in kerosene as carrier. Determination of the REE’s total concentration was carried out by visible spectrophotometric with NAS (sodium alizarin sulfonat) as the colouring agent, absorbance of the solution was determinated at 534 nm as maximum wavelength. For the determination of REE,s specific concentration an ICP-AES has been adopted, at emission maximum wavelength in each specific of REE’s, e.q : Ce at 418.66 nm, La at 408.316 nm, Nd at 401.225 nm, Gd at 342.247 nm, and Lu at 261.542 nm. Transport selectivity of lanthanum through SLM in a mixture of the REE’s simulation by optimum condition were pH of feed phase was 3.0, concentration of carrier composition (TBP : D2EHPA) was (0.3 : 0.7) M, and concentration of chloride acid of the receiving phase was 3.0 M. In this condition, separation factor of La toward Nd, Gd, and Lu : αLa,Nd 5.0297, αLa,Gd 8.1935, , αLu,La 11.9529. Transport selectivity of lanthanum from monazite mineral through SLM at optimum condition have been resulted lanthanum with the perity rate of increase from 25.08% to 89.84%, with recovery was 84.15%.Keywords : supported liquid membrane, carrier, polytetrafluoroethylene, trybuthylphosphate, di-2-ethylhexyl phosphoric acid.
Permeabilitas Membran Transpor Campuran Unsur Tanah Jarang (La, Nd, Gd, Lu) Menggunakan Carrier (TBP : D2EHPA) Melalui Supported Liquid Membrane Djabal Nur Basir
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.617 KB) | DOI: 10.24252/al-kimia.v3i1.1656

Abstract

Methods that have been developed currently for the separation and purification of rare earth elements, REE’s are solvent extraction by through immobilization of an extracting agent in a porous polymeric membrane. This methods beside could increase the transport selectivity, also the amount of carrier was very few. This technique is known as supported liquid membrane, SLM. Research toward transport and separation of REE’s through SLM have been still relatively limited merely to single feed-binary mixture, and one type of carrier. The transport   membrane permeability was obtained in a mixture of REE’s (La,Nd,Gd,Lu) using the carrier TBP : D2EHPA by SLM. In this SLM technique, supporting membrane PTFE (polytetrafluoroethylene) was soaked in a mixture of TBP carrier (tributilfosfat) as a neutral ligand and D2EHPA (acid-2- etilheksilfosfat) as anionic ligand with a particular concentration ratio in the solvent kerosene as membrane phase. HCl as receiver phase and solution mixture of REE’s as feed phase. Determination of the REE’s total concentration was carried out by UV-Vis spectrophotometry with NAS (sodium alizarin sulfonate) as the colouring agent at pH 4,75 and the solution absorbance was determinated at 534 nm as maximum wavelength. Transport patterns of REE’s on the variation of the concentration of total mixed carrier composition, pH, and concentration  of the receiver phase were done for 300 minutes. The optimum conditions of transport mixture of REE’s (La, Nd, Gd, Lu) were feed phase pH 3,0; carrier TBP: D2EHPA (0,3:0,7) M; and receiver phase HCl 3,0 M. In this condition, the transport membrane permeability in mixture of REE’s was 0,1077 cm.menit-1 with the percent of transport was 95,24%.
Selektifitas Transpor Lantanum Dari Mineral Monasit Dengan Teknik Supported Liquid Membrane Djabal Nur Basir
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 2 No 1 - June 2009
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v2i1.973

Abstract

Transport selectivity of lanthanum from monazite mineral by supported liquid membrane, SLM technique has been studied. The supporting membrane, PTFE(polytetrafluoroethylene) was activated by immersing in a mixture of TBP(trybuthylphosphate) and D2EHPA (di-2-ethylhexyl phosphoric acid) at the composition of concentration in kerosene as carrier. Determination of the REE’s total concentration was carried out by visible spectrophotometric with NAS (sodium alizarin sulfonat) as the colouring agent, absorbance of the solution was determinated at 534 nm as maximum wavelength. For the determination of REE,s specific concentration an ICP-AES has been adopted, at emission maximum wavelength in each specific of REE’s, e.q : Ce at 418.66 nm, La at 408.316 nm, Nd at 401.225 nm, Gd at 342.247 nm, and Lu at 261.542 nm. Transport selectivity of lanthanum through SLM in a mixture of the REE’s simulation by optimum condition were pH of feed phase was 3.0, concentration of carrier composition (TBP : D2EHPA) was (0.3 : 0.7) M, and concentration of chloride acid of the receiving phase was 3.0 M. In this condition, separation factor of La toward Nd, Gd, and Lu : αLa,Nd 5.0297, αLa,Gd 8.1935, , αLu,La 11.9529. Transport selectivity of lanthanum from monazite mineral through SLM at optimum condition have been resulted lanthanum with the perity rate of increase from 25.08% to 89.84%, with recovery was 84.15%.Keywords : supported liquid membrane, carrier, polytetrafluoroethylene, trybuthylphosphate, di-2-ethylhexyl phosphoric acid.
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