Removal of phosphate by mesoporous ZrO2
A type of mesoporous ZrO2 was synthesized and its phosphate removal potential was investigated in this study. The adsorption isotherm, pH effect, ionic strength effect and desorption were examined in batch experiments. The adsorption data fitted well to the Langmuir model with which the maximum P ad...
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| Veröffentlicht in: | Journal of hazardous materials 2008-03, Vol.151 (2-3), p.616-622 |
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| creator | Liu, Honglei Sun, Xiaofei Yin, Chengqing Hu, Chun |
| description | A type of mesoporous ZrO2 was synthesized and its phosphate removal potential was investigated in this study. The adsorption isotherm, pH effect, ionic strength effect and desorption were examined in batch experiments. The adsorption data fitted well to the Langmuir model with which the maximum P adsorption capacity was estimated to be 29.71 mgP/g. The amount of phosphate adsorbed increased rapidly in the first 5 h and slowly towards the end of the run, suggesting the possible monolayer coverage of phosphate ions on the surface of the adsorbent. The phosphate adsorption tended to increase with a decrease of pH and an increase of ionic strength. A phosphate desorbability of approximately 60% was observed with 0.5 M NaOH, which indicated a relatively strong bonding between the adsorbed PO4(3-) and the sorptive sites on the surface of the adsorbent. The immobilization of phosphate probably occurs by the mechanisms of ion exchange and physicochemical attraction. Due to its high adsorption capacity, this type of Zirconium oxide has the potential for application to control phosphorus pollution. |
| doi_str_mv | 10.1016/j.jhazmat.2007.06.033 |
| format | Article |
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The adsorption isotherm, pH effect, ionic strength effect and desorption were examined in batch experiments. The adsorption data fitted well to the Langmuir model with which the maximum P adsorption capacity was estimated to be 29.71 mgP/g. The amount of phosphate adsorbed increased rapidly in the first 5 h and slowly towards the end of the run, suggesting the possible monolayer coverage of phosphate ions on the surface of the adsorbent. The phosphate adsorption tended to increase with a decrease of pH and an increase of ionic strength. A phosphate desorbability of approximately 60% was observed with 0.5 M NaOH, which indicated a relatively strong bonding between the adsorbed PO4(3-) and the sorptive sites on the surface of the adsorbent. The immobilization of phosphate probably occurs by the mechanisms of ion exchange and physicochemical attraction. Due to its high adsorption capacity, this type of Zirconium oxide has the potential for application to control phosphorus pollution.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2007.06.033</identifier><identifier>PMID: 17658689</identifier><identifier>CODEN: JHMAD9</identifier><language>eng</language><publisher>Amsterdam: Elsevier</publisher><subject>Adsorption ; Applied sciences ; Chemical engineering ; Chemistry, Physical - methods ; Exact sciences and technology ; Hydrogen-Ion Concentration ; Ion exchange ; Ions ; Models, Chemical ; Phosphates - chemistry ; Pollution ; Porosity ; Pressure ; Sodium Hydroxide - chemistry ; Spectrophotometry, Infrared - methods ; Time Factors ; X-Ray Diffraction ; Zirconium - analysis ; Zirconium - chemistry</subject><ispartof>Journal of hazardous materials, 2008-03, Vol.151 (2-3), p.616-622</ispartof><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c368t-7e77c2cca72369e0938fa9ffdf0d284f79ecb540946be00a50be6df9c3c119fb3</citedby><cites>FETCH-LOGICAL-c368t-7e77c2cca72369e0938fa9ffdf0d284f79ecb540946be00a50be6df9c3c119fb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20106782$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17658689$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Liu, Honglei</creatorcontrib><creatorcontrib>Sun, Xiaofei</creatorcontrib><creatorcontrib>Yin, Chengqing</creatorcontrib><creatorcontrib>Hu, Chun</creatorcontrib><title>Removal of phosphate by mesoporous ZrO2</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>A type of mesoporous ZrO2 was synthesized and its phosphate removal potential was investigated in this study. The adsorption isotherm, pH effect, ionic strength effect and desorption were examined in batch experiments. The adsorption data fitted well to the Langmuir model with which the maximum P adsorption capacity was estimated to be 29.71 mgP/g. The amount of phosphate adsorbed increased rapidly in the first 5 h and slowly towards the end of the run, suggesting the possible monolayer coverage of phosphate ions on the surface of the adsorbent. The phosphate adsorption tended to increase with a decrease of pH and an increase of ionic strength. A phosphate desorbability of approximately 60% was observed with 0.5 M NaOH, which indicated a relatively strong bonding between the adsorbed PO4(3-) and the sorptive sites on the surface of the adsorbent. The immobilization of phosphate probably occurs by the mechanisms of ion exchange and physicochemical attraction. Due to its high adsorption capacity, this type of Zirconium oxide has the potential for application to control phosphorus pollution.</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Chemistry, Physical - methods</subject><subject>Exact sciences and technology</subject><subject>Hydrogen-Ion Concentration</subject><subject>Ion exchange</subject><subject>Ions</subject><subject>Models, Chemical</subject><subject>Phosphates - chemistry</subject><subject>Pollution</subject><subject>Porosity</subject><subject>Pressure</subject><subject>Sodium Hydroxide - chemistry</subject><subject>Spectrophotometry, Infrared - methods</subject><subject>Time Factors</subject><subject>X-Ray Diffraction</subject><subject>Zirconium - analysis</subject><subject>Zirconium - chemistry</subject><issn>0304-3894</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkM1LwzAYxoMobk7_BKUX9dT6JmnzcZThFwwGohcvIU0TttIuNemE-dfbsaJHT8_l97zvww-hSwwZBszu6qxe6e9W9xkB4BmwDCg9QlMsOE0ppewYTYFCnlIh8wk6i7EGAMyL_BRNMGeFYEJO0e2rbf2XbhLvkm7lY7fSvU3KXdLa6Dsf_DYmH2FJztGJ0020F2PO0Pvjw9v8OV0sn17m94vUUCb6lFvODTFGc0KZtCCpcFo6VzmoiMgdl9aURQ4yZ6UF0AWUllVOGmowlq6kM3RzuNsF_7m1sVftOhrbNHpjhy2KA2GcC_ovSAkmwLEcwOIAmuBjDNapLqxbHXYKg9qrVLUaVaq9SgVMDSqH3tX4YFu2tvprje4G4HoEdDS6cUFvzDr-cgQwMC4I_QEH_33s</recordid><startdate>20080301</startdate><enddate>20080301</enddate><creator>Liu, Honglei</creator><creator>Sun, Xiaofei</creator><creator>Yin, Chengqing</creator><creator>Hu, Chun</creator><general>Elsevier</general><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>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope></search><sort><creationdate>20080301</creationdate><title>Removal of phosphate by mesoporous ZrO2</title><author>Liu, Honglei ; Sun, Xiaofei ; Yin, Chengqing ; Hu, Chun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c368t-7e77c2cca72369e0938fa9ffdf0d284f79ecb540946be00a50be6df9c3c119fb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Adsorption</topic><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Chemistry, Physical - methods</topic><topic>Exact sciences and technology</topic><topic>Hydrogen-Ion Concentration</topic><topic>Ion exchange</topic><topic>Ions</topic><topic>Models, Chemical</topic><topic>Phosphates - chemistry</topic><topic>Pollution</topic><topic>Porosity</topic><topic>Pressure</topic><topic>Sodium Hydroxide - chemistry</topic><topic>Spectrophotometry, Infrared - methods</topic><topic>Time Factors</topic><topic>X-Ray Diffraction</topic><topic>Zirconium - analysis</topic><topic>Zirconium - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Honglei</creatorcontrib><creatorcontrib>Sun, Xiaofei</creatorcontrib><creatorcontrib>Yin, Chengqing</creatorcontrib><creatorcontrib>Hu, Chun</creatorcontrib><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>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Honglei</au><au>Sun, Xiaofei</au><au>Yin, Chengqing</au><au>Hu, Chun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Removal of phosphate by mesoporous ZrO2</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2008-03-01</date><risdate>2008</risdate><volume>151</volume><issue>2-3</issue><spage>616</spage><epage>622</epage><pages>616-622</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><coden>JHMAD9</coden><abstract>A type of mesoporous ZrO2 was synthesized and its phosphate removal potential was investigated in this study. The adsorption isotherm, pH effect, ionic strength effect and desorption were examined in batch experiments. The adsorption data fitted well to the Langmuir model with which the maximum P adsorption capacity was estimated to be 29.71 mgP/g. The amount of phosphate adsorbed increased rapidly in the first 5 h and slowly towards the end of the run, suggesting the possible monolayer coverage of phosphate ions on the surface of the adsorbent. The phosphate adsorption tended to increase with a decrease of pH and an increase of ionic strength. A phosphate desorbability of approximately 60% was observed with 0.5 M NaOH, which indicated a relatively strong bonding between the adsorbed PO4(3-) and the sorptive sites on the surface of the adsorbent. The immobilization of phosphate probably occurs by the mechanisms of ion exchange and physicochemical attraction. Due to its high adsorption capacity, this type of Zirconium oxide has the potential for application to control phosphorus pollution.</abstract><cop>Amsterdam</cop><pub>Elsevier</pub><pmid>17658689</pmid><doi>10.1016/j.jhazmat.2007.06.033</doi><tpages>7</tpages></addata></record> |
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| subjects | Adsorption Applied sciences Chemical engineering Chemistry, Physical - methods Exact sciences and technology Hydrogen-Ion Concentration Ion exchange Ions Models, Chemical Phosphates - chemistry Pollution Porosity Pressure Sodium Hydroxide - chemistry Spectrophotometry, Infrared - methods Time Factors X-Ray Diffraction Zirconium - analysis Zirconium - chemistry |
| title | Removal of phosphate by mesoporous ZrO2 |
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