Pembuatan Membran Selulosa Asetat dengan Penambahan Karbon Aktif dari Ranting Eucalyptus alba sebagai Filter Air dalam Menurunkan Kadar Fe

Abstract

Eucalyptus alba branches that contain cellulose compounds can be used as natural materials for the production of activated carbon to make membranes. The purpose of this study is to make cellulose acetate membranes with the addition of Eucalyptus alba activated carbon to reduce Fe metal levels. The method used was carbonization and chemical activation using ZnCl2, followed by the manufacture of cellulose acetate membranes using phase inversion techniques. Membrane characterization using X-Ray Diffraction (XRD), morphological analysis using Scanning Electron Microscopy (SEM), determination of flux, selectivity to Fe metal using Atomic Absorption Spectrophotometry (SSA) and tensile strength test, so that Eucalyptus alba membrane was obtained which was able to reduce Fe metal levels, the initial concentration of 5.723 mg/L could be reduced to 2.995 mg/L; 2.872 mg/L; and 1.250 mg/L. Reduction of metal concentration Fe was 47.66% respectively; 49,81%; and 78.19%. The flux value of cellulose acetate membrane without the addition of activated carbon was 0.044 mL/cm2.s and the addition of activated carbon of 0.5 g 1g 1.5 g was 0.033 mL/cm2.s 0.017 mL/cm2.s 0.011 mL/cm2.s. The mechanical properties produced were 0.27 Mpa, 0.78 Mpa, 0.120 Mpa, and 0.145 Mpa, respectively. Based on the data from the research results, it is known that the membrane with the addition of activated carbon Eucalyptus alba meets the SNI Surface water quality standards.