Transport kinetics of chromium(VI) ions through a bulk liquid membrane containing p-tert-butyl calix[4]arene 3-morpholino propyl diamide derivative

Saf, Ahmet Özgür; Alpaydın, Sabri; Sirit, Abdulkadir

doi:10.1016/j.memsci.2006.07.023

Cited by 63 publications

(20 citation statements)

References 58 publications

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“…Pada pH intermediet lebih besar dan 4 terjadi penurunan transpor ion Co(II) yang sampai ke fasa penerima, karena Co(II) yang sampai ke fasa intermediet berkurang maka yang akan ditranspor ke penerima juga berkurang. Kemungkinan lain juga karena protonasi yang tidak sempurna dan zat pembawa yang terjadi pada antar muka antara fasa membran 2 dan fasa penerima [13] .…”

Section: Pengaruh Ph Fasa Intermedietunclassified

KINETIKA TRANSPOR Co(II) MELALUI TEKNIK MEMBRAN CAIR FASA RUAH SECARA KONSEKUTIF

Dewi¹,

Alif²,

Aziz³

2015

J.Ris.Kim.

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Determination of kinetic analysis of Co(II) ion transport through bulk liquid membranes by consecutive method have been study. The optimum condition was obtained at pH 4 for the intermediate phase and receiving phase at pH near zero, while the source phase at pH 7, oxine concentration in chloroform at source phase is 2.10 M, methyl red concentration in chloroform at receiving phase is 3.10 M. It was found that Co(II) ion receiving phase at optimum condition as 4.40%. Evaluation of Co(II) ion kinetic transport shows k1 as 0.0116 minutes . Kinetic transport process of Co(I1) ion through bulk liquid membranes by consecutive method followed first order consecutive irreversible reaction rate low. Consecutive method can used as an alternative method in determination the optimum condition of metals ion transport and kinetic evaluation of mentioned transport metals ion. Keywords : bulk liquid membranes, consecutive, cobalt PENDAHULUANTeknologi membran cair fasa ruah sudah dikenal dengan baik dalam berbagai proses industri. Metodologinya cukup handal dan telah banyak dipublikasikan untuk proses pemurnian dan pemisahan logam. Membran cair fasa ruah merupakan bagian dan teknik yang mampu memberikan seluruh fasilitas antar mukanya untuk dipakai dalam sistem pemisahan [1] . Youn [2] telah mempublikasikan metoda ini untuk pemisahan Co-Ni dengan menggunakan HEH (EHP) sebagai zat pembawa (carrier). Safavi and Shams [3] juga telah memanfaatkan metoda ini untuk memisahkan Hg(II) di dalam air dengan memakai metil merah sebagai zat pembawa.Penelitian sebelumnya dilakukan dengan menggunakan satu fasa sumber, satu fasa membran dan satu fasa penerima [2,3] . Pemakaian dua fasa membran yaitu oksin dan metil merah sebagai zat pembawa dalam membran cair fasa ruah secara konsekutif belum pernah dipublikasikan. Dalam penelitian ini orientasi penggunaan oksin dan metil merah yang digunakan secara serentak dan berurutan pada pH tertentu sangat menarik untuk dipakai dalam pemanfaatannya sebagai zat pembawa Co(II) dan larutan air melalui proses antarfasa.Penelitian ini bertujuan untuk menentukan apakah sistem konsekutif dapat digunakan untuk transpor Co(II) dan fasa sumber ke fasa penerima dan bagaimana kinetika reaksi pada proses transpor secara konsekutif.Mekanisme transpor ion logam (M +n ) melalui teknik membran cair fasa ruah secara konsekutif dapat dilihat pada Gambar 1.Transpor awal ion logam ke fasa membran dimulai dengan reaksi antara ion logam dengan zat pembawa yang terkandung dalam membran/pelarut organik membentuk kompleks tidak bermuatan. Kompleks tidak bermuatan dapat dibentuk diantaranya melalui proses pembentukan khelat (yaitu khelat netral), solvasi atau pembentukan pasangan ion [4] . Gaya sentrifugal akibat pengadukan yang dilakukan dengan putaran magnet akan mempercepat ditariknya ion M +n dan fasa sumber ke antar muka fasa membran 1 membentuk kompleks yang reversibel dengan oksin seperi yang terlihat pada reaksi 1.

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Section: Pengaruh Ph Fasa Intermedietunclassified

KINETIKA TRANSPOR Co(II) MELALUI TEKNIK MEMBRAN CAIR FASA RUAH SECARA KONSEKUTIF

Dewi¹,

Alif²,

Aziz³

2015

J.Ris.Kim.

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“…The interfacial flux due to chemical reaction is neglected, as the chemical reactions seem to take place at the interface feed phase/membrane and membrane/stripping phase interface, and it has been suggested that chemical reactions can be considered as occurring instantaneously, relative to the diffusional process [22]. Thus, a model of the mass transfer for Cr(VI) may be derived by considering various steps:…”

Section: Permeation Model In Fsslmsmentioning

confidence: 99%

The Extraction of Cr(VI) by a Flat Sheet Supported Liquid Membrane Using Alamine 336 as a Carrier

Eyüpoğlu

Tutkun

2011

Arab J Sci Eng

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Chromium compounds have received considerable attention because they have been used extensively in such industrial applications as electro-plating, steelmaking, tanning of leather goods, and as corrosion inhibitors. The use of flat sheet supported liquid membranes (FSSLMs) to remove metals from wastewaters has been actively undertaken by both the scientific and industrial communities. The present work deals with carrier-facilitated membrane transport of Cr(VI) from acidic media across a FSSLM using the organic extractant reagent Alamine 336. The efficiency of the membrane transport was optimized as a function of pH, diluent type, strip phase (NaOH) concentration, feed and strip phase mixing speed, extractant type and concentration, and support type. Various initial feed phase Cr(VI) concentrations were studied under the optimum conditions. At a 2,000 ppm optimum feed phase concentration, the FSSLM showed no significant loss in permeability and retained the same transport ability over 49 h. Under that condition, the extraction of Cr(VI) was found to be > 99% and the mass flux and permeation coefficient were calculated using related equations as 7.35 × 10 −6 kg m −2 s and 7.88 × 10 −6 m s −1 , respectively.

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“…Diffusion of the analytes through the nonporous membrane controlled the mass transfer process. Saf et al [14] and Yilmaz et al [15] studied the transport kinetics of chromium (VI) ions through a bulk liquid membrane containing pter-buthycalix [4]arene dioxaoactylamide and p-ter-buthycalix [4]arene 3-morpholino propyl diamide derivatives, respectively at temperatures ranging from 25 to 358C. The mass transfer from donor to the acceptor phase (k 1 ) and from the membrane to the acceptor phase (k 2 ) was measured.…”

Section: Influence Of Temperature On Mass Transfermentioning

confidence: 99%

“…Studies have been conducted on the transport of analytes across membranes [12] but very few have investigated the influence of temperature [13 -16]. Most of these have investigated the effect of temperature in bulk liquid membranes [14,15] or just investigation of permeation studies without detailed calculations of the mass transfer parameters [13]. This study has revealed an increase in mass transfer parameters such as diffusion coefficient; viscosity change may not necessarily lead to an overall increase in extraction efficiency in a situation where analytes are not fully trapped in the acceptor phase.…”

Section: Introductionmentioning

confidence: 99%

Influence of temperature on mass transfer in an incomplete trapping supported liquid membrane extraction of triazole fungicides

Chimuka

Michel

Cukrowska

et al. 2009

J of Separation Science

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The influence of temperature in a supported liquid membrane (SLM) extraction of triazole fungicides was investigated. The mass transfer parameters such as diffusion coefficient, flux and apparent viscosity were determined at temperatures ranging from 5 to 40 degrees C. Increase in temperature led to an increase in diffusion coefficient and flux with a flowing acceptor solution. The apparent viscosity also decreased with an increase in temperature. However, the increase in mass transfer parameters did not result in an overall increase in extraction efficiency with a stagnant or circulation acceptor phase. Stripping of the analytes from the membrane into the acceptor phase as well as the configuration of the extraction unit could have limited the influence of temperature on mass transfer. The partition coefficient of analytes from the acceptor solution to the membrane, K(A), was found to be much higher than that from the donor solution to the membrane K(D), thus triazole compounds preferred to remain in the membrane even with an increased extraction temperature.

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Transport kinetics of chromium(VI) ions through a bulk liquid membrane containing p-tert-butyl calix[4]arene 3-morpholino propyl diamide derivative

Cited by 63 publications

References 58 publications

KINETIKA TRANSPOR Co(II) MELALUI TEKNIK MEMBRAN CAIR FASA RUAH SECARA KONSEKUTIF

KINETIKA TRANSPOR Co(II) MELALUI TEKNIK MEMBRAN CAIR FASA RUAH SECARA KONSEKUTIF

The Extraction of Cr(VI) by a Flat Sheet Supported Liquid Membrane Using Alamine 336 as a Carrier

Influence of temperature on mass transfer in an incomplete trapping supported liquid membrane extraction of triazole fungicides

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