Multi-wall carbon nanotube (MWCNT) membrane was tested for SWRO pretreatment. The MWCNT membrane itself showed a superior permeate flux (321.3 LMH/bar), which was 4-times as polyethersulfone ultrafiltration (PES-UF) membrane. Reduction of dissolved organic matter improved to 66% with fewer amounts of powder activated carbon (PAC) (0.5 g/L) in MWCNT membrane filtration maintaining a high permeate flux of 600 LMH/bar. It was due to the increased porosity (84.5%) and hydrophilicity (52.9°) by incorporating MWCNT/polyaniline into PES membrane. Ionic strength affected organic removal in seawater filtration by altering electrostatic interaction between organic matter and surface charge of the positively charged MWCNT membrane.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors acknowledge the financial support provided by the National Centre of Excellence in Desalination Australia (NCEDA), which is funded by the Australian Government through the Water for the Future program. The authors also express thanks for the use of the facility and scientific and technical assistance provided by Dr. Cuifeng Zhou and AMMRF at the University of Sydney. Lastly, the authors also acknowledge the Kapyong Commemorative Postgraduate Scholarship awarded by the Australian Government.
ASJC Scopus subject areas
- Chemical Engineering(all)