title: Characteristic of algogenic organic matter and its effect on UF membrane fouling.
abstract: Algogenic organic matter (AOM) was extracted from blue-green algae (cyanobacteria) and its characteristic was determined by various methods including high-pressure size-exclusion chromatography (HP-SEC), hydrophobic and hydrophilic fractionation, molecular weight (MW) fractionation and fluorescence excitation emission matrix (EEM). The results revealed that AOM was hydrophilic fractionation predominantly, accounting for 78%. The specific ultraviolet absorbance of AOM was 1.1 L/(mg m) only. The analysis for MW distribution demonstrated that organic matter greater than 30,000 MW accounted for over 40% and was composed of mostly 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.
authors.affiliation: College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. tian08120926@163.com
authors.forename: T
authors.initials: T
authors.lastname: Li
authors.forename: B Z
authors.initials: BZ
authors.lastname: Dong
authors.forename: Z
authors.initials: Z
authors.lastname: Liu
authors.forename: W H
authors.initials: WH
authors.lastname: Chu
mesh_terms: D019149:Bioreactors; D000458:Cyanobacteria / Q000502:physiology*; D005453:Fluorescence; D008567:Membranes, Artificial; D012117:Resins, Synthetic; D014462:Ultrafiltration / Q000379:methods*; D014865:Waste Disposal, Fluid / Q000379:methods; D014873:Water Pollutants
chemical_list: D008567:Membranes, Artificial; D012117:Resins, Synthetic; D014873:Water Pollutants