Unesa Journal of Chemistry
Volume 2, Number 1, 2013

FILTRASI ION LOGAM CR6+ DENGAN MEMBRAN KOMPOSIT KITOSAN SILIKA (FILTRATION METAL ION CR6+ WITH COMPOSITE CHITOSAN SILICA MEMBRANE)

NORALIA, ERMA (Jurusan Kimia FMIPA Unesa)



Article Info

Publish Date
29 Jan 2013

Abstract

Abstrak. Telah dibuat membran komposit kitosan silika untuk menurunkan kadar ion logam Cr6+. Membran kompositkitosan silika dibuat dengan konsentrasi silika 0,025M. Karakterisasi membran komposit kitosan silika meliputi ujitarik mulur membran menggunakan autograph dan gugus fungsional dari membran yang diketahui dengan FTIR..Data sifat mekanik membrankomposit kitosan silika menunjukkan bahwa nilai modulus young yaitu 86,80 N/mm2.Karakterisasi membran komposit kitosan silika menggunakan FTIR menunjukkan bahwa munculnya gugus fungsionalOH, NH2, C-H, C-O, C-N, Si-OH, dan Si-O-Si. Uji kinerja membran komposit kitosan silika dilakukan dengan prosesfiltrasi. Koefisien rejeksi membran komposit kitosan silika tertinggi untuk filtrasi Cr6+ yaitu 45,30% dengan konsentrasiawal Cr6+ 20 ppm. Dari data FTIR membran komposit kitosan silika sebelum dan sesudah filtrasi ion logam Cr6+terdapat pergeseran bilangan gelombang pada gugus fungsional yg menunjukkan gugus fungsional yang berperandalam proses filtrasi, yaitu NH2, OH, dan Si-O-Si.Kata Kunci: membran kitosan silika, ion logam Cr6+, filtrasi, koefisien rejeksi.Abstract. Composite chitosan silica membrane can be used to lower the levels of metal ions Cr6+. Composite chitosansilica membrane made with concentration of silica 0.025M. Composite chitosan silica embrane mechanical propertiesshows that the highest value was presented on the young's modulus addition of silica at concentrations of 0.02M with avalue of young's modulus 86.800 N/mm2. Characterization of composite chitosan silica membrane include functionalgroups of the membrane analysis with FTIR. Characterization of composite chitosan silica membrane using FTIRshowed that there was the functional group OH, NH2, CH, CO, CN, Si-OH, and Si-O-Si. From the filtration process itwas obtained that rejection coefficient of the composite chitosan silica membranes for filtration metal ion Cr6+ was45.300% with the early concentration solution of the metal ion Cr6+ 20 ppm. The FTIR of composite chitosan silicamembrane after filtration show that there were shift in the number of waves on a functional group which shows thefunctional groups that functioning in the process of filtration, NH2, OH, and Si-O-Si.Keywords: chitosan silica membrane, metal ion Cr6+, filtration, rejection coefficient.

Copyrights © 2013






Journal Info

Abbrev

unesa-journal-of-chemistry

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

Description

UNESA Journal of Chemistry is published online by the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia. 60231. Published 3 times a year (January, May and September) Aims and Scope: UNESA Journal ...