Lead (II) ion removal using a cellulose acetate-PEG membrane from water hyacinth (Eichhornia crassipes)

Pollution of lead (Pb) in waters causes many environmental problems. Various methods have been developed to overcome these problems, including the use of cellulose acetate membranes as filtration media in water treatment. Water hyacinth is one of the plants that have a high cellulose content and is easily decomposed so that it can be used as a base material for cellulose acetate membranes. In this research, the cellulose acetate membrane was made using the solvent casting method. The cellulose acetate membrane produced in this study was then characterized using FTIR, SEM, and the performance of the membrane by measuring the values of flux, density, and selectivity. Then determined the effectiveness of the cellulose acetate membrane against lead (II) metal ion filtration using AAS. Studied the effect of adding the plasticizer PEG 4000 to the pore size of the cellulose acetate membrane. The results showed that the addition of a PEG plasticizer did not affect the structure of the cellulose acetate because there was no shift in the wavenumbers indicated by the typical group of cellulose acetate namely C=O at wavenumbers of 1726.29 cm-1 and a C-O ester group at wavenumbers of 1112.93 cm-1. The SEM results show that the pore size formed is included in the microfiltration membrane. The effectiveness of the resulting membrane filtration has a rejection coefficient of lead (II) metal ion was 68.11%.