Long term case study of MIEX pre-treatment in drinking water; understanding NOM removal
Removal of natural organic matter (NOM) is a key requirement to improve drinking water quality. This study compared the removal of NOM with, and without, the patented magnetic ion exchange process for removal of dissolved organic carbon (MIEX DOC) as a pre-treatment to microfiltration or conventiona...
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| Veröffentlicht in: | Water research (Oxford) 2011-02, Vol.45 (4), p.1539-1548 |
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| creator | Drikas, Mary Dixon, Mike Morran, Jim |
| description | Removal of natural organic matter (NOM) is a key requirement to improve drinking water quality. This study compared the removal of NOM with, and without, the patented magnetic ion exchange process for removal of dissolved organic carbon (MIEX DOC) as a pre-treatment to microfiltration or conventional coagulation treatment over a 2 year period. A range of techniques were used to characterise the NOM of the raw and treated waters. MIEX pre-treatment produced water with lower concentration of dissolved organic carbon (DOC) and lower specific UV absorbance (SUVA). The processes incorporating MIEX also produced more consistent water quality and were less affected by changes in the concentration and character of the raw water DOC. The very hydrophobic acid fraction (VHA) was the dominant NOM component in the raw water and was best removed by MIEX pre-treatment, regardless of the raw water VHA concentration. MIEX pre-treatment also produced water with lower weight average apparent molecular weight (AMW) and with the greatest reduction in complexity and range of NOM. A strong correlation was found between the VHA content and weight average AMW confirming that the VHA fraction was a major component of the NOM for both the raw water and treated waters.
► Comparison of NOM removal with, and without, MIEX pre-treatment. ► MIEX pre-treatment resulted in lower DOC and SUVA. ► MIEX processes were less affected by changes in raw water DOC. ► Very hydrophobic acid DOC best removed by MIEX pre-treatment. ► MIEX treated water had lower weight average apparent molecular weight. |
| doi_str_mv | 10.1016/j.watres.2010.11.024 |
| format | Article |
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► Comparison of NOM removal with, and without, MIEX pre-treatment. ► MIEX pre-treatment resulted in lower DOC and SUVA. ► MIEX processes were less affected by changes in raw water DOC. ► Very hydrophobic acid DOC best removed by MIEX pre-treatment. ► MIEX treated water had lower weight average apparent molecular weight.</description><identifier>ISSN: 0043-1354</identifier><identifier>EISSN: 1879-2448</identifier><identifier>DOI: 10.1016/j.watres.2010.11.024</identifier><identifier>PMID: 21167549</identifier><identifier>CODEN: WATRAG</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>absorbance ; Applied sciences ; Carbon ; Carbon - analysis ; case studies ; Chemical Fractionation ; Coagulation ; Correlation ; Dissolution ; dissolved organic carbon ; Drinking water ; Exact sciences and technology ; Fractionation ; Hydrophobic and Hydrophilic Interactions ; hydrophobicity ; ion exchange ; Ion Exchange Resins - chemistry ; Microfiltration ; MIEX ; Molecular Weight ; NOM ; Organic Chemicals - isolation & purification ; Pollution ; pretreatment ; Raw ; Time Factors ; Ultraviolet Rays ; Water Purification - methods ; water quality ; Water Supply - analysis ; Water treatment and pollution ; Weight reduction</subject><ispartof>Water research (Oxford), 2011-02, Vol.45 (4), p.1539-1548</ispartof><rights>2010 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>2010 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c513t-57f1a3e5695e81850b370414b7605a94a7e0ca5488be16f02a1d3fc1403a8aa73</citedby><cites>FETCH-LOGICAL-c513t-57f1a3e5695e81850b370414b7605a94a7e0ca5488be16f02a1d3fc1403a8aa73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.watres.2010.11.024$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24277180$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21167549$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Drikas, Mary</creatorcontrib><creatorcontrib>Dixon, Mike</creatorcontrib><creatorcontrib>Morran, Jim</creatorcontrib><title>Long term case study of MIEX pre-treatment in drinking water; understanding NOM removal</title><title>Water research (Oxford)</title><addtitle>Water Res</addtitle><description>Removal of natural organic matter (NOM) is a key requirement to improve drinking water quality. This study compared the removal of NOM with, and without, the patented magnetic ion exchange process for removal of dissolved organic carbon (MIEX DOC) as a pre-treatment to microfiltration or conventional coagulation treatment over a 2 year period. A range of techniques were used to characterise the NOM of the raw and treated waters. MIEX pre-treatment produced water with lower concentration of dissolved organic carbon (DOC) and lower specific UV absorbance (SUVA). The processes incorporating MIEX also produced more consistent water quality and were less affected by changes in the concentration and character of the raw water DOC. The very hydrophobic acid fraction (VHA) was the dominant NOM component in the raw water and was best removed by MIEX pre-treatment, regardless of the raw water VHA concentration. MIEX pre-treatment also produced water with lower weight average apparent molecular weight (AMW) and with the greatest reduction in complexity and range of NOM. A strong correlation was found between the VHA content and weight average AMW confirming that the VHA fraction was a major component of the NOM for both the raw water and treated waters.
► Comparison of NOM removal with, and without, MIEX pre-treatment. ► MIEX pre-treatment resulted in lower DOC and SUVA. ► MIEX processes were less affected by changes in raw water DOC. ► Very hydrophobic acid DOC best removed by MIEX pre-treatment. ► MIEX treated water had lower weight average apparent molecular weight.</description><subject>absorbance</subject><subject>Applied sciences</subject><subject>Carbon</subject><subject>Carbon - analysis</subject><subject>case studies</subject><subject>Chemical Fractionation</subject><subject>Coagulation</subject><subject>Correlation</subject><subject>Dissolution</subject><subject>dissolved organic carbon</subject><subject>Drinking water</subject><subject>Exact sciences and technology</subject><subject>Fractionation</subject><subject>Hydrophobic and Hydrophilic Interactions</subject><subject>hydrophobicity</subject><subject>ion exchange</subject><subject>Ion Exchange Resins - chemistry</subject><subject>Microfiltration</subject><subject>MIEX</subject><subject>Molecular Weight</subject><subject>NOM</subject><subject>Organic Chemicals - isolation & purification</subject><subject>Pollution</subject><subject>pretreatment</subject><subject>Raw</subject><subject>Time Factors</subject><subject>Ultraviolet Rays</subject><subject>Water Purification - methods</subject><subject>water quality</subject><subject>Water Supply - analysis</subject><subject>Water treatment and pollution</subject><subject>Weight reduction</subject><issn>0043-1354</issn><issn>1879-2448</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU2LFDEQhoMo7rj6D0RzEU89pvLRSSMIsqy6MOsedNFbqElXLz32x2zSvbL_3gw96k1PBcXz5i2eMPYcxBoElG926584RUprKQ4rWAupH7AVOFsVUmv3kK2E0KoAZfQJe5LSTgghpaoesxMJUFqjqxX7thmHGz5R7HnARDxNc33Px4ZfXpx_5_tIRe7Aqadh4u3A69gOP9qcyN0U3_J5qCmmCYf6sPx8dckj9eMddk_Zowa7RM-O85Rdfzj_evap2Fx9vDh7vymCATUVxjaAikxZGXLgjNgqKzTorS2FwUqjJRHQaOe2BGUjJEKtmgBaKHSIVp2y18u7-zjezpQm37cpUNfhQOOcvCu1Fk44-D-plYZSgsykXsgQx5QiNX4f2x7jvQfhD-79zi_u_cG9B_DZfY69OBbM257qP6HfsjPw6ghgCtg1EYfQpr-cltaCE5l7uXANjh5vYmauv-Qmkz8QRGldJt4tBGW1dy1Fn0JLQ6C6jRQmX4_tv2_9BTH7q5g</recordid><startdate>20110201</startdate><enddate>20110201</enddate><creator>Drikas, Mary</creator><creator>Dixon, Mike</creator><creator>Morran, Jim</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20110201</creationdate><title>Long term case study of MIEX pre-treatment in drinking water; understanding NOM removal</title><author>Drikas, Mary ; Dixon, Mike ; Morran, Jim</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c513t-57f1a3e5695e81850b370414b7605a94a7e0ca5488be16f02a1d3fc1403a8aa73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>absorbance</topic><topic>Applied sciences</topic><topic>Carbon</topic><topic>Carbon - analysis</topic><topic>case studies</topic><topic>Chemical Fractionation</topic><topic>Coagulation</topic><topic>Correlation</topic><topic>Dissolution</topic><topic>dissolved organic carbon</topic><topic>Drinking water</topic><topic>Exact sciences and technology</topic><topic>Fractionation</topic><topic>Hydrophobic and Hydrophilic Interactions</topic><topic>hydrophobicity</topic><topic>ion exchange</topic><topic>Ion Exchange Resins - chemistry</topic><topic>Microfiltration</topic><topic>MIEX</topic><topic>Molecular Weight</topic><topic>NOM</topic><topic>Organic Chemicals - isolation & purification</topic><topic>Pollution</topic><topic>pretreatment</topic><topic>Raw</topic><topic>Time Factors</topic><topic>Ultraviolet Rays</topic><topic>Water Purification - methods</topic><topic>water quality</topic><topic>Water Supply - analysis</topic><topic>Water treatment and pollution</topic><topic>Weight reduction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Drikas, Mary</creatorcontrib><creatorcontrib>Dixon, Mike</creatorcontrib><creatorcontrib>Morran, Jim</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Water research (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Drikas, Mary</au><au>Dixon, Mike</au><au>Morran, Jim</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Long term case study of MIEX pre-treatment in drinking water; understanding NOM removal</atitle><jtitle>Water research (Oxford)</jtitle><addtitle>Water Res</addtitle><date>2011-02-01</date><risdate>2011</risdate><volume>45</volume><issue>4</issue><spage>1539</spage><epage>1548</epage><pages>1539-1548</pages><issn>0043-1354</issn><eissn>1879-2448</eissn><coden>WATRAG</coden><abstract>Removal of natural organic matter (NOM) is a key requirement to improve drinking water quality. This study compared the removal of NOM with, and without, the patented magnetic ion exchange process for removal of dissolved organic carbon (MIEX DOC) as a pre-treatment to microfiltration or conventional coagulation treatment over a 2 year period. A range of techniques were used to characterise the NOM of the raw and treated waters. MIEX pre-treatment produced water with lower concentration of dissolved organic carbon (DOC) and lower specific UV absorbance (SUVA). The processes incorporating MIEX also produced more consistent water quality and were less affected by changes in the concentration and character of the raw water DOC. The very hydrophobic acid fraction (VHA) was the dominant NOM component in the raw water and was best removed by MIEX pre-treatment, regardless of the raw water VHA concentration. MIEX pre-treatment also produced water with lower weight average apparent molecular weight (AMW) and with the greatest reduction in complexity and range of NOM. A strong correlation was found between the VHA content and weight average AMW confirming that the VHA fraction was a major component of the NOM for both the raw water and treated waters.
► Comparison of NOM removal with, and without, MIEX pre-treatment. ► MIEX pre-treatment resulted in lower DOC and SUVA. ► MIEX processes were less affected by changes in raw water DOC. ► Very hydrophobic acid DOC best removed by MIEX pre-treatment. ► MIEX treated water had lower weight average apparent molecular weight.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>21167549</pmid><doi>10.1016/j.watres.2010.11.024</doi><tpages>10</tpages></addata></record> |
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| subjects | absorbance Applied sciences Carbon Carbon - analysis case studies Chemical Fractionation Coagulation Correlation Dissolution dissolved organic carbon Drinking water Exact sciences and technology Fractionation Hydrophobic and Hydrophilic Interactions hydrophobicity ion exchange Ion Exchange Resins - chemistry Microfiltration MIEX Molecular Weight NOM Organic Chemicals - isolation & purification Pollution pretreatment Raw Time Factors Ultraviolet Rays Water Purification - methods water quality Water Supply - analysis Water treatment and pollution Weight reduction |
| title | Long term case study of MIEX pre-treatment in drinking water; understanding NOM removal |
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