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Aminudin Sulaeman
Kelompok Keilmuan Kimia Analitik, Fakultas Matematika dan Ilmu Pengetahuan Alam, ITB
Mathematics

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Ekstraksi dan Pemisahan Penisilin G dari Fenilasetat dengan Teknik Membran Cair Emulsi Imam Santoso; Buchari Buchari; Muhammad Bachri Amran; Aminudin Sulaeman
Jurnal Matematika & Sains Vol 12, No 3 (2007)
Publisher : Institut Teknologi Bandung

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Abstract

The separation and purification of penicillin G from phenyl acetic acid (PAA) is very difficult to be carried out becausethe two compounds are weak acids and the two compounds can change from one to another by influence of pH. The aimof this research is to establish the optimal conditions for the extraction and separation of penicillin G from phenylaceticacid using the emulsion liquid membrane technique. The optimal conditions were ratio of internal phase volume tomembrane phase volume of 1:1; time of stiring for emulsion preparation of 1 minute; emulsion contact rate of 300 rpm;emulsion contact time of 15 minutes; rate of stirring of emulsion of 2000 rpm; rest time of emulsion of 13 minutes;concentration of penicillin G as external phase 375 ppm; and concentration of surfactant 5% (v/v). At these conditionspenicillin G can be extracted and separated from phenylacetic acid with a separation factor of 19.3 and a contact timeof 15 minutes. Thus the technique of emulsion liquid membrane may be used as a reasonably effective method toseparate penicillin G from phenylacetic acid.
Pengaruh Pelarut dan Temperatur terhadap Tranport Europium (III) melalui Membran Cair Berpendukung Buchari Buchari; Eti Testiati; Aminudin Sulaeman
Jurnal Matematika & Sains Vol 8, No 4 (2003)
Publisher : Institut Teknologi Bandung

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Study of the influence of solvents and temperature on the transport of Eu(III) through supported liquide membrane (SLM) has been undertaken. The first step of this work was to determine the best conditions for the extraction. Polytetrafluoroethylene (PTFE) membrane has been used in this research. The thickness of the film is 47 μm and the average pore size is 0.45 μm.The membrane was impregnated in the carrier solutions for 2 hours. The carrier used were di 2-ethylhexyl phosphoric acid (D2EHPA) and tributylphosphate (TBP). Feed compartment contained 100 ppm Eu(III) in a buffer solution. Receiver compartment contained 0.1 M nitric acid. The optimum result has been achieved at feed pH of 3 and a mixture of 0.8 M D2EHPA and 0.2 M TBP in kerosene. At this conditions, 71.74 % of Eu( III) was transported through SLM. The transport percentase ncreased in the solvent order of kerosene>toluena>chloroform>n-hexane>1,2-dichloroethane. The mixture of 75% of kerosene and 25% of chloroform increased the Eu(III)’s transport from 71.74 % to 79.1% compared with the kerosen as a solvent. The elevation of temperature from 25oC to 60oC increased the transport of Eu(III) from 71.74 to 92.26 %. The profile of membrane surface was characterized by scanning electron microscope (SEM).
Pengaruh Komposisi Asam Bis(2-Etilheksil)Fosfat (D2EHPA) dan Tributil Fosfat (TBP) dalam Resin Amberlite Xad-16 terhadap Sorpsion-Ion La(III), Nd(III) dan Gd(III) Ibnu Khaldun; Buchari Buchari; Muhammad Bachri Amran; Aminudin Sulaeman
Jurnal Matematika & Sains Vol 14, No 1 (2009)
Publisher : Institut Teknologi Bandung

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Sorption of La(III), Nd(III), and Gd(III) ions with solven-timpregnated resins using bis(2-ethylhexyl)phosphoric acid (D2EHPA) and tributhylphosphate (TBP) as extractants and Amberlite XAD-16 as a polymeric support has been studied. The impregnated resins containing various amounts of extractants have been prepared by the wet and dry methods. The effects of pH, types, of extractant, extractant content (extractants/resin ratios of 10/90, 20/80, 50/50, 60/40 wt.%) and contact time on sorption of those metalic ions have been investigated by batch method. The sorption capacity of Amberlite XAD-16 resin previously prepared by the wet method with a 60/40 extractant/resin mass ratio for TBP, D2EHPA/TBP, and D2EHPA were 104.3 mg/g, 99.1 mg/g and 86.2 mg/g resin, respectively. Meanwhile, sorption capacity of Amberlite XAD-16 resin previously prepared by dry method was found to be 645 mg/g; 419.16 mg/g, and 386.9 mg/g resin, respectively. The sorption percentage of the studied metal ions was within the range of 90- 99% for TBP, D2EHPA/TBP and D2EHPA XAD-16 resins at 20/80 extractant/resin mass ratio.
Co-Authors Buchari Buchari Eti Testiati Ibnu Khaldun Imam Santoso Muhammad Bachri Amran