Membran Padat Kitosan-Silika-PEG sebagai Membran Pemisah Ion Logam Bivalen dan Rhodamin B pada Limbah Cair Industri Tekstil

F. Widhi Mahatmanti; E.  Kusumastuti; W. D. P. Rengga

doi:10.17977/um0260v3i22019p012

Authors

F. Widhi Mahatmanti Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang, Indonesia 50229
E. Kusumastuti Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang, Indonesia 50229
W. D. P. Rengga Jurusan Teknik Kimia, Fakultas Teknik, Universitas Negeri Semarang, Indonesia 50229

DOI:

https://doi.org/10.17977/um0260v3i22019p012

Keywords:

Membran pemisah, Membran padat Ch/Si/P, Ion logam bivalen, Rhodamin B

Abstract

The use of membrane on separation has been widely studied. In this study, the Chitosan-silicapolyethylene glycol (Ch/Si/P) solid membrane is prepared and performed adsorption test for bivalent metal ions, including Pb(II), Cu(II), and Cd(II), and Rhodamine B dye in textile waste water. The Ch/Si/P composite membrane is made by mixing of chitosan, silica (extracted from ash hulk) and polyethylene glycol with ratio 1: 0.8: 0.5 (w/w). The performance of membrane is carried out using dead end method. The result shows that membrane has a heteregenous and very tight structure. On the other hand, commercial membrane shows a fibrous structure. The rejection test shows that the selectivity of Ch/Si/P solid membrane increases from Cu(II)> Cd(II)> Pb(II)> Rhodamine B. In comparison, the commercial membrane shows the selectivity in the sequence of Rhodamine B > Pb(II) > Cd(II) > Cu(II). It is clearly observed that Ch/Si/P solid membrane for bivalen metal ions is better than commercially available, and it indicates that functional group spread on the surface acts as a binding site.