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Comparison of advanced oxidation processes for the removal of natural organic matter.
Water Res. 2011 May; 45(10):3263-9.WR

Abstract

This study examined the impact of UV, ozone (O(3)), advanced oxidation processes (AOPs) including O(3)/UV, H(2)O(2)/UV H(2)O(2)/O(3) in the change of molecular weight distribution (MWD) and disinfection by-product formation potential (DBPFP). Bench-scale experiments were conducted with surface river water and changes in the UV absorbance at 254 nm (UV(254)), total organic carbon (TOC), trihalomethane and haloacetic acid formation potential (THMFP, HAAFP) and MWD of the raw and oxidized water were analyzed to evaluate treatment performance. Combination of O(3) and UV with H(2)O(2) was found to result in more TOC and UV(254) reduction than the individual processes. The O(3)/UV process was found to be the most effective AOP for NOM reduction, with TOC and UV(254) reduced by 31 and 88%, respectively. Application of O(3)/UV and H(2)O(2)/UV treatments to the source waters organics with 190-1500 Da molecular weight resulted in the near complete alteration of the molecular weight of NOM from >900 Da to <300 Da H(2)O(2)/UV was found to be the most effective treatment for the reduction of THM and HAA formation under uniform formation conditions. These results could hold particular significance for drinking water utilities with low alkalinity source waters that are investigating AOPs, as there are limited published studies that have evaluated the treatment efficacy of five different oxidation processes in parallel.

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Authors+Show Affiliations

Lamsal R
Department of Civil & Resource Engineering, Dalhousie University, Halifax, NS B3J 1Z1, Canada.
Walsh ME
No affiliation info available
Gagnon GA
No affiliation info available

MeSH

Acetic AcidCarbonChromatography, GelDisinfectionMolecular WeightOrganic ChemicalsOxidation-ReductionOzoneTrihalomethanesWaterWater Purification

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21496860

Citation

Lamsal, Rupa, et al. "Comparison of Advanced Oxidation Processes for the Removal of Natural Organic Matter." Water Research, vol. 45, no. 10, 2011, pp. 3263-9.
Lamsal R, Walsh ME, Gagnon GA. Comparison of advanced oxidation processes for the removal of natural organic matter. Water Res. 2011;45(10):3263-9.
Lamsal, R., Walsh, M. E., & Gagnon, G. A. (2011). Comparison of advanced oxidation processes for the removal of natural organic matter. Water Research, 45(10), 3263-9. https://doi.org/10.1016/j.watres.2011.03.038
Lamsal R, Walsh ME, Gagnon GA. Comparison of Advanced Oxidation Processes for the Removal of Natural Organic Matter. Water Res. 2011;45(10):3263-9. PubMed PMID: 21496860.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of advanced oxidation processes for the removal of natural organic matter. AU - Lamsal,Rupa, AU - Walsh,Margaret E, AU - Gagnon,Graham A, Y1 - 2011/03/29/ PY - 2010/10/22/received PY - 2011/03/18/revised PY - 2011/03/21/accepted PY - 2011/4/19/entrez PY - 2011/4/19/pubmed PY - 2011/8/11/medline SP - 3263 EP - 9 JF - Water research JO - Water Res VL - 45 IS - 10 N2 - This study examined the impact of UV, ozone (O(3)), advanced oxidation processes (AOPs) including O(3)/UV, H(2)O(2)/UV H(2)O(2)/O(3) in the change of molecular weight distribution (MWD) and disinfection by-product formation potential (DBPFP). Bench-scale experiments were conducted with surface river water and changes in the UV absorbance at 254 nm (UV(254)), total organic carbon (TOC), trihalomethane and haloacetic acid formation potential (THMFP, HAAFP) and MWD of the raw and oxidized water were analyzed to evaluate treatment performance. Combination of O(3) and UV with H(2)O(2) was found to result in more TOC and UV(254) reduction than the individual processes. The O(3)/UV process was found to be the most effective AOP for NOM reduction, with TOC and UV(254) reduced by 31 and 88%, respectively. Application of O(3)/UV and H(2)O(2)/UV treatments to the source waters organics with 190-1500 Da molecular weight resulted in the near complete alteration of the molecular weight of NOM from >900 Da to <300 Da H(2)O(2)/UV was found to be the most effective treatment for the reduction of THM and HAA formation under uniform formation conditions. These results could hold particular significance for drinking water utilities with low alkalinity source waters that are investigating AOPs, as there are limited published studies that have evaluated the treatment efficacy of five different oxidation processes in parallel. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/21496860/Comparison_of_advanced_oxidation_processes_for_the_removal_of_natural_organic_matter_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(11)00156-4 DB - PRIME DP - Unbound Medicine ER -