Document Detail

Chemical and biological oxidation of NOM surrogates and effect on HAA formation.
MedLine Citation:
PMID:  19375771     Owner:  NLM     Status:  MEDLINE    
Formation of disinfection by-products (DBPs) can be controlled by removal of disinfection by-product precursors before disinfection. Variable success has been reported, depending on the treatment used and water tested. Chemical and biological oxidations are candidate technologies to control DBP formation. Given the uncertainty over the identity of DBP precursors, the use of surrogates of natural organic matter (NOM) allows fundamental probing of the links between compound character, removal and DBP formation. Nine compounds were chosen to represent NOM and their removal by two advanced oxidation processes (AOPs), UV-C irradiation and biological treatment compared while haloacetic acid (HAA) formation before and after treatment was measured. Although AOPs were able to fully remove all compounds, incomplete mineralisation led to increased HAA levels, dramatically in the case of two amino acids. Biological treatment was effective in removing amino acids but also moderately increased the HAA formation potential (HAAFP) of hydrophilic compounds. These findings indicate waters with high amino acid concentrations will be susceptible to raised HAA levels following AOP treatment and careful process selection for HAA control is required in such cases.
T Bond; E H Goslan; B Jefferson; F Roddick; L Fan; S A Parsons
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-04-02
Journal Detail:
Title:  Water research     Volume:  43     ISSN:  0043-1354     ISO Abbreviation:  Water Res.     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-05-22     Completed Date:  2009-07-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0105072     Medline TA:  Water Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  2615-22     Citation Subset:  IM    
Centre for Water Science, Cranfield University, Bedfordshire, MK43 0AL, UK.
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MeSH Terms
Acetic Acids / chemistry*
Organic Chemicals / chemistry*
Water Pollutants, Chemical / chemistry
Water Purification / methods*
Reg. No./Substance:
0/Acetic Acids; 0/Organic Chemicals; 0/Water Pollutants, Chemical

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