PENGAMBILAN AIR DARI SISTEM ISOPROPIL ALKOHOL – AIR DENGAN DISTILASI ADSORPTIF MENGGUNAKAN ZEOLIT ALAM DAN SILIKA GEL

Silviana Silviana; Aprilina Purbasari

doi:10.14710/reaktor.12.1.29-32

DOI: https://doi.org/10.14710/reaktor.12.1.29-32

PENGAMBILAN AIR DARI SISTEM ISOPROPIL ALKOHOL – AIR DENGAN DISTILASI ADSORPTIF MENGGUNAKAN ZEOLIT ALAM DAN SILIKA GEL

*Silviana Silviana - Jurusan Teknik Kimia Fakultas Teknik UNDIP Semarang, Indonesia

Aprilina Purbasari - Jurusan Teknik Kimia Fakultas Teknik UNDIP Semarang, Indonesia

Published: 18 Jun 2008.

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Abstract

Isopropil alkohol (IPA) merupakan pelarut umum yang digunakan di industri. Secara ekonomi, dalam penggunaan pelarut perlu diupayakan proses pengambilan kembali pelarut tersebut. Kendala pengambilan kembali pelarut IPA dalam sistem IPA–air adalah sistem tersebut membentuk azeotrop. Untuk itu, penelitian ini mengkaji proses pengambilan air dalam sistem IPA–air melalui proses distilasi adsorptif menggunakan adsorben zeolit alam dan silika gel sebagai adsorbennya. Percobaan dilakukan dengan variabel tetap volume umpan sebesar 200 ml, dan variabel berubah jenis adsorben (zeolit alam dan silika gel) dan komposisi umpan IPA (70, 73, 75, 80 %-b). Proses distilasi adsoprsi dijalankan selama 30 menit sampai keluar produk, selanjutunya pengambilan produk untuk dianalisa tiap 5 menit dengan analisa gravimetri. Hasil penelitian menunjukkan penggunaan adsorben silika gel lebih efektif dan selektif menyerap air daripada zeolit alam. Dan didapat kondisi optimum penggunaan silika gel komposisi umpan adalah 75% berat IPA dalam larutan hingga kemurnian IPA hingga 91,6% pada menit ke dua puluh.

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Keywords: distilasi adsorptif, isopropil alkohol, silika gel, zeolit alam

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Section: Research Article

Language : ID

In Volume 12, Nomor 1, Juni 2008

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