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PENGARUH ION LOGAM NIKEL, BEST, TEMBAGA, DAN SENG ,TERHADAP PEMISAHAN ION KROM (VI) DAR! LIMBAH DENGAN TEKNIK MEMBRAN CAIR EMULSI

Master Theses from #PUBLISHER# / 2005-10-14 10:48:22
Oleh : Ari Marlina, S2 - Chemistry
Dibuat : 1999-07-00, dengan 1 file

Keyword : for extraction Cr (VI) ion from solution of 100 ppm Cr were as follows: TBP concentration was 5% (v/v), Span 80 was 5% (v/v), parafin was 1%, internal phase concentration was 0,3
Nomor Panggil (DDC) : T. 541.372.3 MAR
Sumber pengambilan dokumen : 20050467

ABSTRAK:

Telah dilakukan ekstraksi ion krom (VI) dalam air libah elektroplating dengan teknik membran cair emulsi, dimana fasa membran yang berupa emulsi terdiri dari kerosen sebagai pelarut, sorbitan monooleat (Span-80) sebagai surfaktan, tri butil phosfat (TBP) sebagai zat pengemban dan larutan NaHCO3 sebagai fasa internal.

Kondisi optimum yang digunakan untuk mengekstraksi larutan yang mengandung 100 ppm Cr (VI) adalah sebagai berikut: konsentrasi TBP 5%(v/v), konsentrasi Span-80 5%(v/v), konsentrasi parafin 1gi.(v/v), konsentrasi fasa internal 0,3M, perbandingan volume fasa orgamic dengan fasa internal 2:1, waktu pembentukan emulsi 5 menit, kecepatan pengadukan pembentukan emulsi 4400 rpm, perbandingan volume fasa emulsi dengan fasa eksternal 1:5, waktu kontak emulsi dengan fasa eksternal 5 menit dan kecepatan pengadukan antara fasa emulsi dengan fasa eksternal 300 rpm. Pengaruh beberapa ion terhadap ekstraksi ion krom (VI) juga telah dipelajari. Ion besi, tembaga, nikel dan seng sedikit terekstrak, sehingga adanya ion-ion tersebut dalam larutan ion krom tidak mempengaruhi persen ekstraksi ion krom.

Deskripsi Alternatif :

ABSTRACT

Extraction of Cr (VI) from water solution of electroplating by liquid membrane emulsion technique have been done, where the emulsion membrane consists of kerosene as solvent, span 80 as surfactant, tributyl phosphate (TBP) as carrier and NaHCO3 as internal phase.

Optimum condition obtained for extraction Cr (VI) ion from solution of 100 ppm Cr were as follows: TBP concentration was 5% (v/v), Span 80 was 5% (v/v), parafin was 1%, internal phase concentration was 0,3M, the ratio of internal phase volume to organic phase volume was 1: 2, time of emulsion formation was 5 minutes, rate of emulsion formation was 4400 rpm, the ratio of emulsion phase volume to external phase volume was 1:5, contact time of emulsion with external phase was 5 minutes and contact rate of emulsion with external phase was 300 rpm. The influence of several ions for chrom ion extraction was also studied. Iron, copper, nickel and zink ions were also extraction by the liquid membrane membrane, but the presence of these ions in chrom ion solution did not change the percent extraction of chrom ion

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