Abstract
A crossflow bench-scale test cell was used to investigate factors (i.e. NOM concentration, ionic strength, and solution pH) affecting natural organic matter (NOM) rejection and flux decline during nanofiltration (NF). Experimental results revealed that increased NOM concentration increased permeate flux decline, salt rejection, and NOM rejection, enhancing NOM accumulation on membrane surface. At high concentration of NOM, permeate flux curve corresponded to cake formation model. Increased ionic strength from 0.004 M to 0.1 M illustrated higher flux decline, possibly as a result of increasing osmotic pressure from higher concentration of salt. Solutions possessing high ionic strength (0.05 M) showed greater flux decline and NOM rejection than those having low ionic strength (0.01 M). Increased solution pH from 4 to 10 exhibited greater flux decline, caused by increasing salt rejection and enhancing salt concentration on membrane surface.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
