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.
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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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