Phosphate Adsorption by Fresh and Aged Aluminum Hydroxide. Consequences for Lake Restoration
Lake restoration by in-lake precipitation of PO4 3− with Al(OH)3 is commonly used but there is currently no good guidelines for calculating doses (amounts and application) that can ensure long lasting effects. We studied the effect of aging of Al(OH)3 on PO4 3− adsorption and desorption properties w...
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| Veröffentlicht in: | Environmental science & technology 2008-09, Vol.42 (17), p.6650-6655 |
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| creator | de Vicente, Inmaculada Huang, Ping Andersen, Frede Ø Jensen, Henning S |
| description | Lake restoration by in-lake precipitation of PO4 3− with Al(OH)3 is commonly used but there is currently no good guidelines for calculating doses (amounts and application) that can ensure long lasting effects. We studied the effect of aging of Al(OH)3 on PO4 3− adsorption and desorption properties with and without PO4 3− in solution and found that Al(OH)3 aged without PO4 3− lost 75% of the maximum adsorption capacity in 90 days after which no further changes occurred. Al(OH)3 aged in presence of PO4 3− maintained the adsorption capacity through 6 months and even increased it for PO4 3− concentrations |
| doi_str_mv | 10.1021/es800503s |
| format | Article |
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Consequences for Lake Restoration</title><source>MEDLINE</source><source>ACS Publications</source><creator>de Vicente, Inmaculada ; Huang, Ping ; Andersen, Frede Ø ; Jensen, Henning S</creator><creatorcontrib>de Vicente, Inmaculada ; Huang, Ping ; Andersen, Frede Ø ; Jensen, Henning S</creatorcontrib><description>Lake restoration by in-lake precipitation of PO4 3− with Al(OH)3 is commonly used but there is currently no good guidelines for calculating doses (amounts and application) that can ensure long lasting effects. We studied the effect of aging of Al(OH)3 on PO4 3− adsorption and desorption properties with and without PO4 3− in solution and found that Al(OH)3 aged without PO4 3− lost 75% of the maximum adsorption capacity in 90 days after which no further changes occurred. Al(OH)3 aged in presence of PO4 3− maintained the adsorption capacity through 6 months and even increased it for PO4 3− concentrations <150 μM. On this basis, we suggest that repeated dosing of smaller Al-aliquots may be more efficient than adding a single big dose. Also, Al should be added at the time when PO4 3− availability in the lake is highest. At laboratory conditions we obtained molar P:Al binding ratios of 0.12−0.19 at PO4 3− concentrations similar to those in eutrophic lake sediments, but when examining Al(OH)3 aged in situ in two lake sediments lower ratios (∼0.1) were found. We suggest that total Al-dosage should be calculated relative to the pool of potential mobile P in the lake with a molar ratio not less than 10 Al: 1 P.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es800503s</identifier><identifier>PMID: 18800544</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Adsorption ; Aluminum ; Aluminum Hydroxide - chemistry ; Applied sciences ; Desorption ; Eutrophication ; Exact sciences and technology ; Fresh Water ; Freshwater ; Geologic Sediments - chemistry ; Lakes ; Phosphates ; Phosphates - chemistry ; Pollution ; Remediation and Control Technologies ; Sediments</subject><ispartof>Environmental science & technology, 2008-09, Vol.42 (17), p.6650-6655</ispartof><rights>Copyright © 2008 American Chemical Society</rights><rights>2008 INIST-CNRS</rights><rights>Copyright American Chemical Society Sep 1, 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a440t-3642184383d1364c3acac4456b8a17303e20f3e54e630017aa263e1277c29a93</citedby><cites>FETCH-LOGICAL-a440t-3642184383d1364c3acac4456b8a17303e20f3e54e630017aa263e1277c29a93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es800503s$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es800503s$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2763,27075,27923,27924,56737,56787</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20616267$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18800544$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>de Vicente, Inmaculada</creatorcontrib><creatorcontrib>Huang, Ping</creatorcontrib><creatorcontrib>Andersen, Frede Ø</creatorcontrib><creatorcontrib>Jensen, Henning S</creatorcontrib><title>Phosphate Adsorption by Fresh and Aged Aluminum Hydroxide. Consequences for Lake Restoration</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Lake restoration by in-lake precipitation of PO4 3− with Al(OH)3 is commonly used but there is currently no good guidelines for calculating doses (amounts and application) that can ensure long lasting effects. We studied the effect of aging of Al(OH)3 on PO4 3− adsorption and desorption properties with and without PO4 3− in solution and found that Al(OH)3 aged without PO4 3− lost 75% of the maximum adsorption capacity in 90 days after which no further changes occurred. Al(OH)3 aged in presence of PO4 3− maintained the adsorption capacity through 6 months and even increased it for PO4 3− concentrations <150 μM. On this basis, we suggest that repeated dosing of smaller Al-aliquots may be more efficient than adding a single big dose. Also, Al should be added at the time when PO4 3− availability in the lake is highest. At laboratory conditions we obtained molar P:Al binding ratios of 0.12−0.19 at PO4 3− concentrations similar to those in eutrophic lake sediments, but when examining Al(OH)3 aged in situ in two lake sediments lower ratios (∼0.1) were found. We suggest that total Al-dosage should be calculated relative to the pool of potential mobile P in the lake with a molar ratio not less than 10 Al: 1 P.</description><subject>Adsorption</subject><subject>Aluminum</subject><subject>Aluminum Hydroxide - chemistry</subject><subject>Applied sciences</subject><subject>Desorption</subject><subject>Eutrophication</subject><subject>Exact sciences and technology</subject><subject>Fresh Water</subject><subject>Freshwater</subject><subject>Geologic Sediments - chemistry</subject><subject>Lakes</subject><subject>Phosphates</subject><subject>Phosphates - chemistry</subject><subject>Pollution</subject><subject>Remediation and Control Technologies</subject><subject>Sediments</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp90c9r2zAUB3AxVtas22H_wBCDbfTgVr9tH0NY1kHYyppDDwOhyM-LW9tK9Wxo_vspJCSwwS6SQB99eU-PkHecXXEm-DVgwZhmEl-QCdeCZbrQ_CWZMMZlVkpzf05eIz4wxoRkxStyzovdA6Um5NftOuBm7Qag0wpD3AxN6OlqS-cRcE1dX9Hpb0hLO3ZNP3b0ZlvF8NxUcEVnoUd4GqH3gLQOkS7cI9CfgEOIbpfzhpzVrkV4e9gvyHL-ZTm7yRY_vn6bTReZU4oNmTRK8ELJQlY8nb103nmltFkVjueSSRCslqAVGJlayp0TRgIXee5F6Up5QT7vYzcxpHJwsF2DHtrW9RBGtLlWWgnFZZKf_itNqQ1nXCf44S_4EMbYpyZs-kIutcpNQpd75GNAjFDbTWw6F7eWM7sbjD0OJtn3h8Bx1UF1kodJJPDxABx619bR9b7BoxPMcCNMnly2dw0O8Hy8d_HRpttc2-XtnZVc3pfL-XdbnnKdx1MT_xb4Bx8Vrc8</recordid><startdate>20080901</startdate><enddate>20080901</enddate><creator>de Vicente, Inmaculada</creator><creator>Huang, Ping</creator><creator>Andersen, Frede Ø</creator><creator>Jensen, Henning S</creator><general>American Chemical Society</general><scope>BSCLL</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>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7X8</scope><scope>7QH</scope><scope>7TV</scope><scope>7U6</scope><scope>7UA</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope></search><sort><creationdate>20080901</creationdate><title>Phosphate Adsorption by Fresh and Aged Aluminum Hydroxide. 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Consequences for Lake Restoration</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2008-09-01</date><risdate>2008</risdate><volume>42</volume><issue>17</issue><spage>6650</spage><epage>6655</epage><pages>6650-6655</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Lake restoration by in-lake precipitation of PO4 3− with Al(OH)3 is commonly used but there is currently no good guidelines for calculating doses (amounts and application) that can ensure long lasting effects. We studied the effect of aging of Al(OH)3 on PO4 3− adsorption and desorption properties with and without PO4 3− in solution and found that Al(OH)3 aged without PO4 3− lost 75% of the maximum adsorption capacity in 90 days after which no further changes occurred. Al(OH)3 aged in presence of PO4 3− maintained the adsorption capacity through 6 months and even increased it for PO4 3− concentrations <150 μM. On this basis, we suggest that repeated dosing of smaller Al-aliquots may be more efficient than adding a single big dose. Also, Al should be added at the time when PO4 3− availability in the lake is highest. At laboratory conditions we obtained molar P:Al binding ratios of 0.12−0.19 at PO4 3− concentrations similar to those in eutrophic lake sediments, but when examining Al(OH)3 aged in situ in two lake sediments lower ratios (∼0.1) were found. We suggest that total Al-dosage should be calculated relative to the pool of potential mobile P in the lake with a molar ratio not less than 10 Al: 1 P.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>18800544</pmid><doi>10.1021/es800503s</doi><tpages>6</tpages></addata></record> |
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| subjects | Adsorption Aluminum Aluminum Hydroxide - chemistry Applied sciences Desorption Eutrophication Exact sciences and technology Fresh Water Freshwater Geologic Sediments - chemistry Lakes Phosphates Phosphates - chemistry Pollution Remediation and Control Technologies Sediments |
| title | Phosphate Adsorption by Fresh and Aged Aluminum Hydroxide. Consequences for Lake Restoration |
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