A comparison of the role of two blue-green algae in THM and HAA formation

WATER RESEARCH

卷:43

Article

Huang, J.¹  Graham, N.¹  Templeton, M. R.¹  Zhang, Y.^1,2  Collins, C.²  Nieuwenhuijsen, M.³ 

[1] Univ London Imperial Coll Sci Technol & Med, Dept Civil & Environm Engn, London SW7 2AZ, England

[2] Univ Reading, Dept Soil Sci, Reading RG6 6DW, Berks, England

[3] Ctr Res Environm Epidemiol CREAL, IMIM, CIBERESP, Barcelona 08003, Spain

关键词: Algae;    Anabaena flos-aquae;    Microcystis aeruginosa;    Disinfection by-products;    Trihalomethanes;    Haloacetic acids;   

DOI  :  10.1016/j.watres.2009.04.029

来源: Elsevier

【 摘 要 】

The contribution of two blue-green algae species, Anabaeria flos-aquae and Microcystis aeruginosa, to the formation of trihalomethanes (THMs) and haloacetic acids (HAAs) was investigated. The experiments examined the formation potential of these disinfection by-products (DBPs) from both algae cells and extracellular organic matter (EOM) during four algal growth phases. Algal cells and EOM of Anabaena and Microcystis exhibited a high potential for DBP formation. Yields of total THMs (TTHM) and total HAAs (THAA) were closely related to the growth phase. Reactivity of EOM from Anabaena was slightly higher than corresponding cells, while the opposite result was found for Microcystis. Specific DBP yields (yield/unit C) of Anabaena were in the range of 2-11 mu mol/mmol C for TTHM and 217 mu mol/mmol C for THAA, while those of Microcystis were slightly higher. With regard to the distributions of individual THM and HAA compounds, differences were observed between the algae species and also between cells and EOM. The presence of bromide shifted the dominant compounds from HAAs to THMs. (C) 2009 Elsevier Ltd. All rights reserved.

【 授权许可】

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