STUDY OF MEMBRANE TECHNOLOGY DEVELOPMENT FOR DISINFECTION BYPRODUCTS REMOVAL

• Main Author: Yufrani Afred, Merymistika
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/54712
• Institution: Institut Teknologi Bandung

Disinfection byproducts (DbP) are organic micro-pollutants in water which is produced during disinfection. Due to its toxicity effect in ?g/L, DbPs must be removed to ensure water quality. Membrane technology is a promising method in molecular separation. This study aims to acknowledge the development of technology and material membrane as well as their challenges and outlook in DbP separation. Based on study, membrane filtration including reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and forward osmosis (FO) have been developed for DbP separation. The separation mechanisms are dominated by steric and electrostatic exclusion effect. Catalytic membrane, nanoparticlecatalytic membrane reactor (Np-CMR), was also investigated for DbP degradation through reduction reaction, which simultantly produced organic acid. Overall, the performance of membranes for DbP removal or degradation achieved 40-100%. However, the development of membranes have challenges such as trade-off between permeability and selectivity, fouling, and operating cost. This has stimulated modification of polymer membrane with superhidrophilic and defect-free characteristic. Hydrophilic polymers and nanoparticles including metal oxide, aquaporin, graphene oxide (GO), and metal organic framework (MOF) have been utilized as modifier. Based on literature data, the DbP rejection or degradation rate of modified membranes were 30-50% higher than unmodified membranes. Furthermore, the development of membrane with nanosheet of nanomaterial (thickness <100nm and nanoporous) can be considered in this field. Additionally, the capability of Np-CMR membrane to produce organic acids may provide usefull insight on reuse of wastewater contaminated DbP.