Document Detail


Yield of trihalomethanes and haloacetic acids upon chlorinating algal cells, and its prediction via algal cellular biochemical composition.
MedLine Citation:
PMID:  18954887     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The major objective of the present study was to investigate the contribution of major biomolecules, including protein, carbohydrates and lipids, in predicting DBPs formation upon chlorination of algal cells. Three model compounds, including bovine serum albumin (BSA), starch and fish oil, as surrogates of algal-derived proteins, carbohydrates and lipids, and cells of three algae species, representing blue-green algae, green algae, and diatoms, were chlorinated in the laboratory. The results showed that BSA (27 microg mg(-1) C) and fish oil (50 microg mg(-1) C) produced more than nine times higher levels of chloroform than starch (3 microg mg(-1) C). For the formation of HAAs, BSA was shown to have higher reactivity (49 microg mg(-1) C) than fish oil and starch (5 microg mg(-1) C). For the algal cells, Nitzschia sp. (diatom) showed higher chloroform yields (48 microg mg(-1) C) but lower HAA yields (43 microg mg(-1) C) than Chlamydomonas sp. (green algae) (chloroform: 34 microg mg(-1) C; HAA: 62 microg mg(-1) C) and Oscillatoria sp. (blue-green algae) (chloroform: 26 microg mg(-1) C; HAA: 72 microg mg(-1) C). The calculated chloroform formation of cells from the three algal groups, based on their biochemical compositions, was generally consistent with the experimental data, while the predicted values for HAAs were significantly lower than the observed ones. As compared to humic substances, such as humic and fulvic acids, the algal cells appeared to be important precursors of dichloroacetic acid.
Authors:
Hua Chang Hong; Asit Mazumder; Ming Hung Wong; Yan Liang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-01
Journal Detail:
Title:  Water research     Volume:  42     ISSN:  0043-1354     ISO Abbreviation:  Water Res.     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-12-08     Completed Date:  2009-02-26     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0105072     Medline TA:  Water Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  4941-8     Citation Subset:  IM    
Affiliation:
Croucher Institute for Environmental Sciences, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong, PR China.
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MeSH Terms
Descriptor/Qualifier:
Algae, Green / physiology*
Animals
Chlamydomonas / physiology
Cyanobacteria / physiology*
Diatoms / physiology*
Disinfectants / metabolism
Fish Oils
Fluoroacetates / analysis*
Halogenation*
Serum Albumin, Bovine
Trihalomethanes / analysis*
Chemical
Reg. No./Substance:
0/Disinfectants; 0/Fish Oils; 0/Fluoroacetates; 0/Serum Albumin, Bovine; 0/Trihalomethanes

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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