Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation

Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from differe...
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Autor*in:	Zhou, Shiqing [verfasserIn] Zhu, Shumin Shao, Yisheng Gao, Naiyun

Format:	Artikel
Sprache:	Englisch

Erschienen:	2015

Rechteinformationen:	Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved.

Schlagwörter:	Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry

Übergeordnetes Werk:	Enthalten in: Water research - Amsterdam [u.a.] : Elsevier, Pergamon, 1967, 72(2015), Seite 381-390
Übergeordnetes Werk:	volume:72 ; year:2015 ; pages:381-390

Links:	Volltext Link aufrufen

DOI / URN:	10.1016/j.watres.2014.11.023

Katalog-ID:	OLC1963551257

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520			\|a Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water.
540			\|a Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved.
650		4	\|a Carbon - chemistry
650		4	\|a Ozone - chemistry
650		4	\|a Microcystis - chemistry
650		4	\|a Water - chemistry
650		4	\|a Nitrogen - chemistry
650		4	\|a Extracellular Space - chemistry
650		4	\|a Intracellular Space - chemistry
650		4	\|a Organic Chemicals - chemistry
700	1		\|a Zhu, Shumin \|4 oth
700	1		\|a Shao, Yisheng \|4 oth
700	1		\|a Gao, Naiyun \|4 oth
773	0	8	\|i Enthalten in \|t Water research \|d Amsterdam [u.a.] : Elsevier, Pergamon, 1967 \|g 72(2015), Seite 381-390 \|w (DE-627)129471860 \|w (DE-600)202613-2 \|w (DE-576)014841630 \|x 0043-1354 \|7 nnns
773	1	8	\|g volume:72 \|g year:2015 \|g pages:381-390
856	4	1	\|u http://dx.doi.org/10.1016/j.watres.2014.11.023 \|3 Volltext
856	4	2	\|u http://www.ncbi.nlm.nih.gov/pubmed/25479708
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allfields	10.1016/j.watres.2014.11.023 doi PQ20160617 (DE-627)OLC1963551257 (DE-599)GBVOLC1963551257 (PRQ)c1571-695d63b0695c62acf2a3dd2d0b9341fb368514b3223ec2e08e4788a16b40bf90 (KEY)0018203620150000072000000381characteristicsofcndbpsformationfromalgalorganicma DE-627 ger DE-627 rakwb eng 550 DNB Zhou, Shiqing verfasserin aut Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry Zhu, Shumin oth Shao, Yisheng oth Gao, Naiyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 72(2015), Seite 381-390 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:72 year:2015 pages:381-390 http://dx.doi.org/10.1016/j.watres.2014.11.023 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25479708 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 72 2015 381-390
spelling	10.1016/j.watres.2014.11.023 doi PQ20160617 (DE-627)OLC1963551257 (DE-599)GBVOLC1963551257 (PRQ)c1571-695d63b0695c62acf2a3dd2d0b9341fb368514b3223ec2e08e4788a16b40bf90 (KEY)0018203620150000072000000381characteristicsofcndbpsformationfromalgalorganicma DE-627 ger DE-627 rakwb eng 550 DNB Zhou, Shiqing verfasserin aut Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry Zhu, Shumin oth Shao, Yisheng oth Gao, Naiyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 72(2015), Seite 381-390 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:72 year:2015 pages:381-390 http://dx.doi.org/10.1016/j.watres.2014.11.023 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25479708 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 72 2015 381-390
allfields_unstemmed	10.1016/j.watres.2014.11.023 doi PQ20160617 (DE-627)OLC1963551257 (DE-599)GBVOLC1963551257 (PRQ)c1571-695d63b0695c62acf2a3dd2d0b9341fb368514b3223ec2e08e4788a16b40bf90 (KEY)0018203620150000072000000381characteristicsofcndbpsformationfromalgalorganicma DE-627 ger DE-627 rakwb eng 550 DNB Zhou, Shiqing verfasserin aut Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry Zhu, Shumin oth Shao, Yisheng oth Gao, Naiyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 72(2015), Seite 381-390 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:72 year:2015 pages:381-390 http://dx.doi.org/10.1016/j.watres.2014.11.023 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25479708 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 72 2015 381-390
allfieldsGer	10.1016/j.watres.2014.11.023 doi PQ20160617 (DE-627)OLC1963551257 (DE-599)GBVOLC1963551257 (PRQ)c1571-695d63b0695c62acf2a3dd2d0b9341fb368514b3223ec2e08e4788a16b40bf90 (KEY)0018203620150000072000000381characteristicsofcndbpsformationfromalgalorganicma DE-627 ger DE-627 rakwb eng 550 DNB Zhou, Shiqing verfasserin aut Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry Zhu, Shumin oth Shao, Yisheng oth Gao, Naiyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 72(2015), Seite 381-390 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:72 year:2015 pages:381-390 http://dx.doi.org/10.1016/j.watres.2014.11.023 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25479708 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 72 2015 381-390
allfieldsSound	10.1016/j.watres.2014.11.023 doi PQ20160617 (DE-627)OLC1963551257 (DE-599)GBVOLC1963551257 (PRQ)c1571-695d63b0695c62acf2a3dd2d0b9341fb368514b3223ec2e08e4788a16b40bf90 (KEY)0018203620150000072000000381characteristicsofcndbpsformationfromalgalorganicma DE-627 ger DE-627 rakwb eng 550 DNB Zhou, Shiqing verfasserin aut Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water. Nutzungsrecht: Copyright © 2014 Elsevier Ltd. All rights reserved. Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry Zhu, Shumin oth Shao, Yisheng oth Gao, Naiyun oth Enthalten in Water research Amsterdam [u.a.] : Elsevier, Pergamon, 1967 72(2015), Seite 381-390 (DE-627)129471860 (DE-600)202613-2 (DE-576)014841630 0043-1354 nnns volume:72 year:2015 pages:381-390 http://dx.doi.org/10.1016/j.watres.2014.11.023 Volltext http://www.ncbi.nlm.nih.gov/pubmed/25479708 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-TEC SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_20 GBV_ILN_21 GBV_ILN_70 GBV_ILN_4012 GBV_ILN_4112 GBV_ILN_4219 AR 72 2015 381-390
language	English
source	Enthalten in Water research 72(2015), Seite 381-390 volume:72 year:2015 pages:381-390
sourceStr	Enthalten in Water research 72(2015), Seite 381-390 volume:72 year:2015 pages:381-390
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry
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container_title	Water research
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Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. 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author	Zhou, Shiqing
spellingShingle	Zhou, Shiqing ddc 550 misc Carbon - chemistry misc Ozone - chemistry misc Microcystis - chemistry misc Water - chemistry misc Nitrogen - chemistry misc Extracellular Space - chemistry misc Intracellular Space - chemistry misc Organic Chemicals - chemistry Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation
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topic_title	550 DNB Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation Carbon - chemistry Ozone - chemistry Microcystis - chemistry Water - chemistry Nitrogen - chemistry Extracellular Space - chemistry Intracellular Space - chemistry Organic Chemicals - chemistry
topic	ddc 550 misc Carbon - chemistry misc Ozone - chemistry misc Microcystis - chemistry misc Water - chemistry misc Nitrogen - chemistry misc Extracellular Space - chemistry misc Intracellular Space - chemistry misc Organic Chemicals - chemistry
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title	Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation
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title_full	Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation
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title_sort	characteristics of c-, n-dbps formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation
title_auth	Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation
abstract	Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water.
abstractGer	Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water.
abstract_unstemmed	Extracellular organic matter (EOM) and intracellular organic matter (IOM) of Microcystis aeruginosa have been reported to contribute to the formation of carbonaceous disinfection by-products (C-DBPs) and nitrogenous disinfection by-products (N-DBPs). Little is known about DBPs formation from different molecular weight (MW) fractions, especially for N-nitrosodimethylamine (NDMA). This study fractionated EOM and IOM into several MW fractions using a series of ultrafiltration membranes and is the first to report on the C-DBPs and N-DBPs formation from chlorination and chloramination of different MW fractions. Results showed that EOM and IOM were mainly distributed in low-MW (<1 KDa) and high-MW (>100 KDa) fractions. Additionally, the low-MW and high-MW fractions of EOM and IOM generally took an important part in forming C-DBPs and N-DBPs, either in chlorination or in chloramination. Furthermore, the effects of pre-ozonation on the formation of DBPs in subsequent chlorination and chloramination were also investigated. It was found that ozone shifted the high-MW fractions of EOM and IOM into lower MW fractions and increased the C-DBPs and N-DBPs yields to different degrees. As low-MW fractions are more difficult to remove than high-MW fractions by conventional treatment processes, therefore, activated carbon adsorption, nanofiltration (NF) and biological treatment processes can be ideal to remove the low-MW fractions and minimize the formation potential of C-DBPs and N-DBPs. Moreover, the use of ozone should be carefully considered in the treatment of algal-rich water.
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title_short	Characteristics of C-, N-DBPs formation from algal organic matter: role of molecular weight fractions and impacts of pre-ozonation
url	http://dx.doi.org/10.1016/j.watres.2014.11.023 http://www.ncbi.nlm.nih.gov/pubmed/25479708
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author2	Zhu, Shumin Shao, Yisheng Gao, Naiyun
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up_date	2024-07-04T05:59:55.849Z
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