Pranata, Agustyan Elvry (2018) Pengaruh Jenis dan Konsentrasi Anion pada Fasa Penerima Terhadap Efisiensi Tranpor Ion Tiosianat Melalui Polymer Inclusion Membrane (PIM). Sarjana thesis, Universitas Brawijaya.
Abstract
Tiosianat adalah senyawa kimia yang dapat mencemari lingkungan.Tiosianat ditemukan dalam proses pemurnian bijih emas.Penyisihan tiosianat dapat dilakukan dengan menggunakan metode Polymer Inclusion Membrane (PIM).PIM terdiri atas polimer dasar, ekstraktan dan pemlastis.Tujuan dari penelitian ini adalah untuk mempelajari pengaruh jenis dan konsentrasi anion pada fasa penerima terhadap transpor ion tiosianat melalui PIM.Uji transpor dilakukan dengan menggunakan sel difusi yang terdiri dari dua larutan fasa yang dipisahkan oleh membrane (PIM). PIM yang digunakan terbuat dari PVC 70%w/w, aliquat 336-Cl 20%w/w, dan diocthyl phthalate (DOP) 10%w/w dengan menggunakan pelarut THF.Fasa umpan berisi 100 mL SCN- 50 ppm.Fasa penerima berisi 100 mL larutan garam natrium dengan jenis anion adalah NO3-, Cl-, dan SO42-.Konsentrasi larutan di fasa penerima yang digunakan adalah 0,25;0,50;0,75; dan 1,0 M.Kedua larutan diaduk dengan kecepatan 150 rpm selama 150 menit. Larutan pada kedua fasa diambil sebanyak 1 mL setiap 30 menit. Kemudian ditentukan konsentrasi tiosianat secara spektrofotometri menggunakan pereaksi FeCl3 pada panjang gelombang 457 nm dengan membentuk senyawa kompleks Fe(SCN)2+ berwana merah. Hasil penelitian menunjukkan bahwa ion Cl- dalam fasa penerima menyebabkan transport maksimum ion tiosianat, dengan konsentrasi ion klorida sebesar 1 M. Pada kondisi tersebut diperoleh nilai permeabilitas membran sebesar 0,849x10-3 mL/cm2.menit, fluks awal sebesar 4,25x10-2 mg/cm2.menit, dan efisiensi transport sebesar 59,8%.
English Abstract
Thiocyanate was a chemical compound that can pollute the enviromental . Thiocyanate was found produced from extraction of gold ore. Removal of thiocyanate ion could be conducted by using Polymer Inclusion Membrane PIM. PIM was consisted of base polymer, extractant, and plasticizer. The aim of this research was to study the effect of anions nature and its concentration in the stripping phase to the transport of thiocyanate through PIM. Transport experiment was conducted by using a diffusion cell which is consisted of two compartments separated by a membrane (PIM). PIM was prepared from PVC 70% w.t, Aliquat 336-Cl 20% w.t, and Diocthyl phatalate (DOP) 10% w.t dissolved in THF. Feed phase was filled with 100 mL of thiocyanate solution of 50 mg/L. Stripping phase was filled with 100 ml of sodium solutions at various anions origin, including NO3-, Cl-, dan SO42-. The concentration of the stripping phase solution was varied at 0.25; 0.50 ;0.75; dan 1.00 M. Both phase were stirred at about 150 rpm for 150 minute. Every 30 minutes, an analyte solution was taken up from both compartments for about 1 mL. Thiocyanate concentration was was analyzed using spectrophotometric method using iron(III)chloride at wavelength at 457 nm as red iron(III)thiocyanate complex spectrophotometric method at 457 nm. The results showed that the use of Cl- ion at 1 M concentration in the stipping phase caused the optimum transport of thiocyanate ion. At this condition, the value of membrane permeability, the initial flux, and transport efficiency were 0,849 x 10-3 mL/cm2.minute, 4,25x10-2 mg/cm2.minute, and 59,8 %, respectivelly.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FMIPIA/2018/544/051800432 |
| Uncontrolled Keywords: | PIM, ion tiosianat, permeabilitas membrane, fluks, efisiensi tranpor, PIM, thiocyanate ion, membrane permeability, flux, transport efficiency. |
| Subjects: | 500 Natural sciences and mathematics > 541 Physical chemistry > 541.3 Miscellaneous topics in physical chemistry > 541.37 Electrochemistry and magnetochemistry |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Nur Cholis |
| Date Deposited: | 09 Feb 2018 07:27 |
| Last Modified: | 22 Oct 2021 05:27 |
| URI: | http://repository.ub.ac.id/id/eprint/8853 |
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