[Characteristic of algogenic organic matter (AOM) membrane fouling and its effect on UF membrane fouling].
Algogenic organic matter (AOM) was extracted from blue-green algae (Cyanobacteria) and its characteristics was determined by various methods including high-pressure size-exclusion chromatography (HP-SEC), hydrophobic and hydrophilic fractionation and fluorescence excitation emission matrix (EEM). The results showed that AOM was composed of hydrophilic fraction predominantly, account for 78%. The SUVA of AOM was only 1.1 L/(mg x m). The analysis for relative molecular weight (Mr) demonstrated that organic matter greater than 30,000 accounted for above 40% and mostly was composed of neutral hydrophilic compound. EEM analyses revealed that protein-like and humic substances existed in AOM. A test for membrane filtration exhibited that AOM could make ultrafiltration membrane substantial flux decline, which can be attributed to membrane pore clog caused by neutral hydrophilic compound with larger MW.
Li
Tian
T
School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. tian08120926@163.com
Dong
Bing-zhi
BZ
Liu
Zheng
Z
D000458:Cyanobacteria / Q000254:growth & development* / Q000378:metabolism*; D004868:Equipment Failure; D005068:Eutrophication; D005374:Filtration; D005427:Flocculation; D005618:Fresh Water / Q000032:analysis; D008567:Membranes, Artificial; D009930:Organic Chemicals / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D014462:Ultrafiltration; D014873:Water Pollutants / Q000032:analysis; D018508:Water Purification / Q000379:methods*
D008567:Membranes, Artificial; D009930:Organic Chemicals; D014873:Water Pollutants