Characterization and Performance of CA/Chitosan Membrane from Golden Snail Shell in the Application of Humic Acid Purification

Abstract:

The removal of humic acid from water is accomplished by a process known asultrafiltration membrane. This study investigates the simple method of preparing cellulose acetate (CA)-based ultrafiltration membranes by introducing chitosan into the dope solution. The result shows the positive effect of incorporating chitosan (1-3 wt%) as a membrane additive on their characteristics and performance. The membranes exhibit improved properties including increased bulk porosity and hydrophilicity. The pure water flux is significantly improved, reaching 100 L/m2.h with 3 wt% chitosan compared to 47 L/m2.h for the pure CA membrane. In particular, the 1% chitosan modification shows optimal performance, achieving high flux (82 L/m2.h) and humic acid rejection (80%). Furthermore, the modified CA membrane shows stability in both acidic and alkaline solutions over a 24 h exposure. These results suggest promising prospects for the application of chitosan-modified CA membranes in efficient water purification processes.

• Periodical: Key Engineering Materials (Volume 999)
• Pages: 27-34
• DOI: https://doi.org/10.4028/p-fX06gE
• Online since: December 2024
• Authors: Sri Mulyati*, Anisa Luthfiana, Aulia Chintia Ambarita, Chyva Rizka Nanda, Cut Meurah Rosnelly
• Keywords: Cellulose Acetate, Chitosan, Golden Snail Shell, Humic Acid

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