Desalination Using Cellulose Acetate Membrane From Cassava Skin
In everyday life water is widely used for industrial needs and even households. But the longer the existence of clean water is getting more limited, so we need to find ways to get quality water. One of them uses the potential of seawater using the process of desalination through a membrane process. Commercial membranes have relatively high prices. Therefore, in this study used cassava skin waste (Manihot utilisma) which contains cellulose acetate as raw material for making desalination membranes.
This study uses a simple method so that the membrane obtained is more economical. Microbial cellulose from cassava peel formed by starter Acetobacter xylinum with a variation of 2: 3: 4 soaked in 4% NaOH for 24 hours then washed with aquadest. Then soak using the CH3COOH 4% for 24 hours. Then sweeping, acetylation and hydrolysis of microbial cellulose to form cellulose acetate.
Based on the results of the test, the best membrane results are obtained with a rejection value of 24%, the best resulting flux data on the 200 Ax sample which is 0.071, this makes the membrane more selective towards salt water desalination. FTIR results are the absorption of OH groups at wave numbers 3360.00 cm-1 and groups C = O at wave numbers 1641.42 cm-1, the SEM results are 1.09 nm and there are several large pores measuring 315-844 nm, high tensile strength, repeated use of the membrane, and clearer color and texture of the membrane
SMAN 1 North Sumatera Indonesia