Carbonaceous and nitrogenous disinfection by-product formation from algal organic matter.
Identifieur interne : 004016 ( Ncbi/Curation ); précédent : 004015; suivant : 004017Carbonaceous and nitrogenous disinfection by-product formation from algal organic matter.
Auteurs : Emma H. Goslan [Royaume-Uni] ; Céline Seigle [France] ; Diane Purcell [Australie] ; Rita Henderson [Australie] ; Simon A. Parsons [Royaume-Uni] ; Bruce Jefferson [Royaume-Uni] ; Simon J. Judd [Qatar]Source :
- Chemosphere [ 1879-1298 ] ; 2017.
Descripteurs français
- KwdFr :
- Azote (), Azote (analyse), Carbone (), Carbone (analyse), Chlore (), Diatomées (métabolisme), Désinfectants (), Désinfection (), Eau de boisson (), Halogénation, Interactions hydrophobes et hydrophiles, Microbiologie de l'eau, Microcystis (métabolisme), Polluants chimiques de l'eau (analyse), Purification de l'eau (), Scenedesmus (métabolisme), Température, Trihalogénométhanes (analyse).
- MESH :
- analyse : Azote, Carbone, Polluants chimiques de l'eau, Trihalogénométhanes.
- métabolisme : Diatomées, Microcystis, Scenedesmus.
- Azote, Carbone, Chlore, Désinfectants, Désinfection, Eau de boisson, Halogénation, Interactions hydrophobes et hydrophiles, Microbiologie de l'eau, Purification de l'eau, Température.
English descriptors
- KwdEn :
- Carbon (analysis), Carbon (chemistry), Chlorine (chemistry), Diatoms (metabolism), Disinfectants (chemistry), Disinfection (methods), Drinking Water (chemistry), Halogenation, Hydrophobic and Hydrophilic Interactions, Microcystis (metabolism), Nitrogen (analysis), Nitrogen (chemistry), Scenedesmus (metabolism), Temperature, Trihalomethanes (analysis), Water Microbiology, Water Pollutants, Chemical (analysis), Water Purification (methods).
- MESH :
- chemical , analysis : Carbon, Nitrogen, Trihalomethanes, Water Pollutants, Chemical.
- chemical , chemistry : Carbon, Chlorine, Disinfectants, Drinking Water, Nitrogen.
- metabolism : Diatoms, Microcystis, Scenedesmus.
- methods : Disinfection, Water Purification.
- Halogenation, Hydrophobic and Hydrophilic Interactions, Temperature, Water Microbiology.
Abstract
Seasonal algal blooms in drinking water sources release intracellular and extracellular algal organic matter (AOM) in significant concentrations into the water. This organic matter provides precursors for disinfection by-products (DBPs) formed when the water is subsequently chlorinated at the final disinfection stage of the potable water treatment process. This paper presents results of AOM characterisation from five algal species (three cyanobacteria, one diatom and one green) alongside the measurement of the DBP formation potential from the AOM of six algal species (an additional diatom). The character was explored in terms of hydrophilicity, charge and protein and carbohydrate content. 18 DBPs were measured following chlorination of the AOM samples: the four trihalomethanes (THMs), nine haloacetic acids (HAAs), four haloacetonitriles (HANs) and one halonitromethane (HNM). The AOM was found to be mainly hydrophilic (52 and 81%) in nature. Yields of up to 92.4 μg mg(-1) C carbonaceous DBPs were measured, with few consistent trends between DBP formation propensity and either the specific ultraviolet absorbance (SUVA) or the chemical characteristics. The AOM from diatomaceous algae formed significant amounts of nitrogenous DBPs (up to 1.7 μg mg(-1) C). The weak trends in DBPFP may be attributable to the hydrophilic nature of AOM, which also makes it more challenging to remove by conventional water treatment processes.
DOI: 10.1016/j.chemosphere.2016.11.148
PubMed: 27951445
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pubmed:27951445Le document en format XML
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<series><title level="j">Chemosphere</title>
<idno type="eISSN">1879-1298</idno>
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<term>Carbon (chemistry)</term>
<term>Chlorine (chemistry)</term>
<term>Diatoms (metabolism)</term>
<term>Disinfectants (chemistry)</term>
<term>Disinfection (methods)</term>
<term>Drinking Water (chemistry)</term>
<term>Halogenation</term>
<term>Hydrophobic and Hydrophilic Interactions</term>
<term>Microcystis (metabolism)</term>
<term>Nitrogen (analysis)</term>
<term>Nitrogen (chemistry)</term>
<term>Scenedesmus (metabolism)</term>
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<term>Diatomées (métabolisme)</term>
<term>Désinfectants ()</term>
<term>Désinfection ()</term>
<term>Eau de boisson ()</term>
<term>Halogénation</term>
<term>Interactions hydrophobes et hydrophiles</term>
<term>Microbiologie de l'eau</term>
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<term>Chlorine</term>
<term>Disinfectants</term>
<term>Drinking Water</term>
<term>Nitrogen</term>
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<term>Carbone</term>
<term>Polluants chimiques de l'eau</term>
<term>Trihalogénométhanes</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Diatoms</term>
<term>Microcystis</term>
<term>Scenedesmus</term>
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<term>Water Purification</term>
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<term>Microcystis</term>
<term>Scenedesmus</term>
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<term>Water Microbiology</term>
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<term>Carbone</term>
<term>Chlore</term>
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<term>Désinfection</term>
<term>Eau de boisson</term>
<term>Halogénation</term>
<term>Interactions hydrophobes et hydrophiles</term>
<term>Microbiologie de l'eau</term>
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<front><div type="abstract" xml:lang="en">Seasonal algal blooms in drinking water sources release intracellular and extracellular algal organic matter (AOM) in significant concentrations into the water. This organic matter provides precursors for disinfection by-products (DBPs) formed when the water is subsequently chlorinated at the final disinfection stage of the potable water treatment process. This paper presents results of AOM characterisation from five algal species (three cyanobacteria, one diatom and one green) alongside the measurement of the DBP formation potential from the AOM of six algal species (an additional diatom). The character was explored in terms of hydrophilicity, charge and protein and carbohydrate content. 18 DBPs were measured following chlorination of the AOM samples: the four trihalomethanes (THMs), nine haloacetic acids (HAAs), four haloacetonitriles (HANs) and one halonitromethane (HNM). The AOM was found to be mainly hydrophilic (52 and 81%) in nature. Yields of up to 92.4 μg mg(-1) C carbonaceous DBPs were measured, with few consistent trends between DBP formation propensity and either the specific ultraviolet absorbance (SUVA) or the chemical characteristics. The AOM from diatomaceous algae formed significant amounts of nitrogenous DBPs (up to 1.7 μg mg(-1) C). The weak trends in DBPFP may be attributable to the hydrophilic nature of AOM, which also makes it more challenging to remove by conventional water treatment processes.</div>
</front>
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