AnasFahrudin (2007) Pengaruh konsentrasi asam DI[2-etil heksil] fosfat dan waktu permentasi terhadap ekstraksi kobal[II] secara emulsi membran cair. Sarjana thesis, Universitas Brawijaya.
Abstract
Konsentrasi senyawa pengemban dan waktu permeasi mempengaruhi ekstraksi secara emulsi membran cair. Penelitian ini bertujuan untuk menentukan kondisi optimum ekstraksi kobal (II) meliputi konsentrasi D2EHPA dan waktu permeasi menggunakan emulsi membran cair. Membran cair dibuat dari campuran senyawa pengemban D2EHPA dengan variasi konsentrasi 0,25; 0,75; 1,00; 1,25; 1,50 % (v/v); surfaktan SPAN-80 3 % (v/v) dan pelarut minyak tanah dengan volume total membran cair 10 mL. Fasa eksternal mengandung larutan kobal (II) 10 ppm dalam larutan penyangga asetat pH 6. Variasi waktu permeasi yang dipelajari adalah 1, 3, 5, 7 dan 9. Konsentrasi kobal (II) sebelum dan sesudah ekstraksi ditentukan secara spektrofotometri sinar tampak menggunakan pereaksi nitroso-R pada λ=500 nm. Data dianalisis secara ANOVA menggunakan RAL dan Uji BNT pada taraf kepercayaan 95 %. Hasil penelitian menyatakan ada pengaruh konsentrasi D2EHPA dan waktu permeasi terhadap persen perolehan kembali kobal (II) secara emulsi membran cair. Kondisi optimum ekstraksi kobal (II) diperoleh pada konsentrasi D2EHPA 1,25% (v/v) dengan waktu permeasi 5 menit menghasilkan persen perolehan kembali sebesar (88,61 ± 1,49) %.
English Abstract
Concentration of carrier and permeation time affect to the extraction by liquid membrane emulsion. The aim of this research is to determine the optimum condition of cobalt (II) extraction by liquid membrane emulsion involving D2EHPA concentration and permeation time. The liquid membrane was made from a mixture of D2EHPA with concentration 0,25; 0,75; 1,00; 1,25; 1,50 % (v/v) and 3 % (v/v) of SPAN-80 as surfactant; and kerosene as solvent in total volume of 10 mL. External phase contained cobalt (II) solution 10 ppm in acetate buffer pH 6, while permeation times were studied within time of 1, 3, 5, 7 and 9 minutes. The concentration of cobalt (II) before and after extraction were determined by spectrophotometry method using nitroso-R at wavelength 500 nm. The resulting data was analyzed by ANOVA using RAL and BNT method at confidence level of 95 %. The result showed that the D2EHPA concentration and permeation time affect to the cobalt (II) recovery by the liquid membrane emulsion. The optimum condition was reached in concentration of D2EHPA 1,25 % (v/v) and the permeation time of 5 minutes resulting in (88,61 ± 1,49) % of recovery
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2007/050701367 |
| Subjects: | 300 Social sciences > 338 Production > 338.1 Agriculture |
| Divisions: | Fakultas Teknologi Pertanian > Teknologi Hasil Pertanian |
| Depositing User: | Unnamed user with email repository.ub@ub.ac.id |
| Date Deposited: | 05 Jun 2007 00:00 |
| Last Modified: | 22 Oct 2021 03:09 |
| URI: | http://repository.ub.ac.id/id/eprint/151565 |
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