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.
Research Article|October 01 2011
Characteristic of algogenic organic matter and its effect on UF membrane fouling
B. Z. Dong
T. Li, B. Z. Dong, Z. Liu, W. H. Chu; Characteristic of algogenic organic matter and its effect on UF membrane fouling. Water Sci Technol 1 October 2011; 64 (8): 1685–1691. doi: https://doi.org/10.2166/wst.2011.148
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