TY - JOUR
T1 - Characteristics and reactivity of algae-produced dissolved organic carbon
AU - Nguyen, My Linh
AU - Westerhoff, Paul
AU - Baker, Lawrence
AU - Hu, Qiang
AU - Esparza-Soto, Mario
AU - Sommerfeld, Milton
PY - 2005/11
Y1 - 2005/11
N2 - Algae (green, blue-green, and diatom) grown in inorganic media produced particulate and dissolved organic carbon (DOC). DOC produced by a green-alga contains 25% hydrophobic acids. DOC from all algae had specific ultraviolet absorbance values less than 2.0m-1 (mg/L)-1. Algae-produced DOC was biologically labile; greater than 60% degraded in bioreactors within 5 days. The biodegradable material likely included carbohydrates, amino acids, and amino sugars, which were present in hydrophobic acid isolates. Chlorination of algal DOC formed disinfection by-products; DOC from the green alga, Scenedesmus quadricauda, produced chloroform [0.53 micromole per mg carbon (μmol/mg C)], dichloroacetic acid (0.27 μmol/mg C), and trichloroacetic acid (0.14 μmol/mg C. This work complements other studies, which focused on algal total organic carbon (DOC and cellular material), and clearly demonstrates the importance of identifying algae-derived sources of DOC in water supplies and removing such DOC in water treatment plants prior to chlorination. Journal of Environmental Engineering
AB - Algae (green, blue-green, and diatom) grown in inorganic media produced particulate and dissolved organic carbon (DOC). DOC produced by a green-alga contains 25% hydrophobic acids. DOC from all algae had specific ultraviolet absorbance values less than 2.0m-1 (mg/L)-1. Algae-produced DOC was biologically labile; greater than 60% degraded in bioreactors within 5 days. The biodegradable material likely included carbohydrates, amino acids, and amino sugars, which were present in hydrophobic acid isolates. Chlorination of algal DOC formed disinfection by-products; DOC from the green alga, Scenedesmus quadricauda, produced chloroform [0.53 micromole per mg carbon (μmol/mg C)], dichloroacetic acid (0.27 μmol/mg C), and trichloroacetic acid (0.14 μmol/mg C. This work complements other studies, which focused on algal total organic carbon (DOC and cellular material), and clearly demonstrates the importance of identifying algae-derived sources of DOC in water supplies and removing such DOC in water treatment plants prior to chlorination. Journal of Environmental Engineering
KW - Algae
KW - Disinfection
KW - Dissolved organic carbon
KW - Organic matter
KW - Water quality
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U2 - 10.1061/(ASCE)0733-9372(2005)131:11(1574)
DO - 10.1061/(ASCE)0733-9372(2005)131:11(1574)
M3 - Article
AN - SCOPUS:27644568085
SN - 0733-9372
VL - 131
SP - 1574
EP - 1582
JO - Journal of Environmental Engineering
JF - Journal of Environmental Engineering
IS - 11
ER -
