Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels
We report the synthesis of hydroxyapatite/polyacrylamide (HAp/PAAm) composite hydrogels with various HAp contents by free radical polymerization and their removal capability of Pb 2+ ions in aqueous solutions with controlled initial Pb 2+ ion concentrations and pH values of 2–5. The swelling ratio o...
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| Veröffentlicht in: | Journal of hazardous materials 2008-11, Vol.159 (2), p.294-299 |
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| creator | Jang, Suk Hyun Jeong, Young Gyu Min, Byung Gil Lyoo, Won Seok Lee, Sang Cheol |
| description | We report the synthesis of hydroxyapatite/polyacrylamide (HAp/PAAm) composite hydrogels with various HAp contents by free radical polymerization and their removal capability of Pb
2+ ions in aqueous solutions with controlled initial Pb
2+ ion concentrations and pH values of 2–5. The swelling ratio of the composite gels in aqueous solutions decreases with increasing the HAp content in the gels. The composite gel with higher HAp content exhibits the higher removal capacity of Pb
2+ ions owing to the higher adsorption sites for Pb
2+ ions, but shows the slower removal rate of Pb
2+ ions due to the lower degree of swelling. The removal mechanism of Pb
2+ ion is very sensitive to the pH value in aqueous solution, although the removed amount of Pb
2+ ion is nearly same, regardless of pH values of 2–5. The removal mechanism, the dissolution of HAp in the composite gel and subsequent precipitation of hydroxypyromorphite (HPy), is dominant at lower pH 2–3, whereas the mechanism, the adsorption of Pb
2+ ions on the composite gel and following cation exchange reaction between Pb
2+ ions adsorbed and Ca
2+ of HAp, is dominant at higher pH 4–5. The equilibrium removal process of Pb
2+ ions by the composite gels at pH 5 is described well with the Langmuir isotherm model. The equilibrium removal capacities of the composite gels with 30, 50, and 70
wt.% HAp contents are evaluated to be 123, 178, and 209
mg/g, respectively. |
| doi_str_mv | 10.1016/j.jhazmat.2008.02.018 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_69686913</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0304389408002483</els_id><sourcerecordid>35489566</sourcerecordid><originalsourceid>FETCH-LOGICAL-c527t-aae3f4ae4fb0da68b74ce5b9c9a0b93ee7c7198bfff6997c5c5e06802f0c138b3</originalsourceid><addsrcrecordid>eNqF0U2L1TAUBuAginMd_QlKN7pr56RJ02QlMvgFA7rQreE0PXF6aZua9A7WX2_LLbq8qxDynDcHXsZecig4cHVzLI73-GfAuSgBdAFlAVw_Ygeua5ELIdRjdgABMhfayCv2LKUjAPC6kk_ZFddSQMXlgf34GmnCiHMXxgzHNusJ22y7RBrCA_bZFMNEcV6y4LP7pY3h94LT6me6mUK_oItLj0PXUubCMIW0PpzdT-rTc_bEY5_oxX5es-8f3n-7_ZTfffn4-fbdXe6qsp5zRBJeIknfQItKN7V0VDXGGYTGCKLa1dzoxnuvjKld5SoCpaH04LjQjbhmb86567a_TpRmO3TJUd_jSOGUrDJKK8PFRSgqqU2l1EXIt8RSwmUooaxXvMLqDF0MKUXydordgHGxHOzWqT3avVO7dWqhtGun69yr_YNTM1D7f2ovcQWvd4DJYe8jjq5L_1wJupRCb0Fvz24thh46ija5jkZHbRfJzbYN3YVV_gJtbsTZ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>14027968</pqid></control><display><type>article</type><title>Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels</title><source>MEDLINE</source><source>Elsevier ScienceDirect Journals</source><creator>Jang, Suk Hyun ; Jeong, Young Gyu ; Min, Byung Gil ; Lyoo, Won Seok ; Lee, Sang Cheol</creator><creatorcontrib>Jang, Suk Hyun ; Jeong, Young Gyu ; Min, Byung Gil ; Lyoo, Won Seok ; Lee, Sang Cheol</creatorcontrib><description>We report the synthesis of hydroxyapatite/polyacrylamide (HAp/PAAm) composite hydrogels with various HAp contents by free radical polymerization and their removal capability of Pb
2+ ions in aqueous solutions with controlled initial Pb
2+ ion concentrations and pH values of 2–5. The swelling ratio of the composite gels in aqueous solutions decreases with increasing the HAp content in the gels. The composite gel with higher HAp content exhibits the higher removal capacity of Pb
2+ ions owing to the higher adsorption sites for Pb
2+ ions, but shows the slower removal rate of Pb
2+ ions due to the lower degree of swelling. The removal mechanism of Pb
2+ ion is very sensitive to the pH value in aqueous solution, although the removed amount of Pb
2+ ion is nearly same, regardless of pH values of 2–5. The removal mechanism, the dissolution of HAp in the composite gel and subsequent precipitation of hydroxypyromorphite (HPy), is dominant at lower pH 2–3, whereas the mechanism, the adsorption of Pb
2+ ions on the composite gel and following cation exchange reaction between Pb
2+ ions adsorbed and Ca
2+ of HAp, is dominant at higher pH 4–5. The equilibrium removal process of Pb
2+ ions by the composite gels at pH 5 is described well with the Langmuir isotherm model. The equilibrium removal capacities of the composite gels with 30, 50, and 70
wt.% HAp contents are evaluated to be 123, 178, and 209
mg/g, respectively.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2008.02.018</identifier><identifier>PMID: 18430514</identifier><identifier>CODEN: JHMAD9</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Acrylic Resins - chemical synthesis ; Acrylic Resins - chemistry ; Adsorbent ; Adsorption ; Applied sciences ; Chemical engineering ; Chromatography, Ion Exchange ; Durapatite - chemical synthesis ; Durapatite - chemistry ; Exact sciences and technology ; Heavy metal ; Hydrogel ; Hydrogels - chemical synthesis ; Hydrogels - chemistry ; Hydrogen-Ion Concentration ; Hydroxyapatite ; Ion exchange ; Lead - isolation & purification ; Microscopy, Electron, Scanning ; Models, Statistical ; Organic polymers ; Physicochemistry of polymers ; Pollution ; Polyacrylamide ; Polymerization ; Preparation, kinetics, thermodynamics, mechanism and catalysts ; Solutions ; Spectrophotometry, Atomic ; Thermodynamics ; X-Ray Diffraction</subject><ispartof>Journal of hazardous materials, 2008-11, Vol.159 (2), p.294-299</ispartof><rights>2008 Elsevier B.V.</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c527t-aae3f4ae4fb0da68b74ce5b9c9a0b93ee7c7198bfff6997c5c5e06802f0c138b3</citedby><cites>FETCH-LOGICAL-c527t-aae3f4ae4fb0da68b74ce5b9c9a0b93ee7c7198bfff6997c5c5e06802f0c138b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304389408002483$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20824388$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18430514$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Jang, Suk Hyun</creatorcontrib><creatorcontrib>Jeong, Young Gyu</creatorcontrib><creatorcontrib>Min, Byung Gil</creatorcontrib><creatorcontrib>Lyoo, Won Seok</creatorcontrib><creatorcontrib>Lee, Sang Cheol</creatorcontrib><title>Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>We report the synthesis of hydroxyapatite/polyacrylamide (HAp/PAAm) composite hydrogels with various HAp contents by free radical polymerization and their removal capability of Pb
2+ ions in aqueous solutions with controlled initial Pb
2+ ion concentrations and pH values of 2–5. The swelling ratio of the composite gels in aqueous solutions decreases with increasing the HAp content in the gels. The composite gel with higher HAp content exhibits the higher removal capacity of Pb
2+ ions owing to the higher adsorption sites for Pb
2+ ions, but shows the slower removal rate of Pb
2+ ions due to the lower degree of swelling. The removal mechanism of Pb
2+ ion is very sensitive to the pH value in aqueous solution, although the removed amount of Pb
2+ ion is nearly same, regardless of pH values of 2–5. The removal mechanism, the dissolution of HAp in the composite gel and subsequent precipitation of hydroxypyromorphite (HPy), is dominant at lower pH 2–3, whereas the mechanism, the adsorption of Pb
2+ ions on the composite gel and following cation exchange reaction between Pb
2+ ions adsorbed and Ca
2+ of HAp, is dominant at higher pH 4–5. The equilibrium removal process of Pb
2+ ions by the composite gels at pH 5 is described well with the Langmuir isotherm model. The equilibrium removal capacities of the composite gels with 30, 50, and 70
wt.% HAp contents are evaluated to be 123, 178, and 209
mg/g, respectively.</description><subject>Acrylic Resins - chemical synthesis</subject><subject>Acrylic Resins - chemistry</subject><subject>Adsorbent</subject><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Chromatography, Ion Exchange</subject><subject>Durapatite - chemical synthesis</subject><subject>Durapatite - chemistry</subject><subject>Exact sciences and technology</subject><subject>Heavy metal</subject><subject>Hydrogel</subject><subject>Hydrogels - chemical synthesis</subject><subject>Hydrogels - chemistry</subject><subject>Hydrogen-Ion Concentration</subject><subject>Hydroxyapatite</subject><subject>Ion exchange</subject><subject>Lead - isolation & purification</subject><subject>Microscopy, Electron, Scanning</subject><subject>Models, Statistical</subject><subject>Organic polymers</subject><subject>Physicochemistry of polymers</subject><subject>Pollution</subject><subject>Polyacrylamide</subject><subject>Polymerization</subject><subject>Preparation, kinetics, thermodynamics, mechanism and catalysts</subject><subject>Solutions</subject><subject>Spectrophotometry, Atomic</subject><subject>Thermodynamics</subject><subject>X-Ray Diffraction</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>eNqF0U2L1TAUBuAginMd_QlKN7pr56RJ02QlMvgFA7rQreE0PXF6aZua9A7WX2_LLbq8qxDynDcHXsZecig4cHVzLI73-GfAuSgBdAFlAVw_Ygeua5ELIdRjdgABMhfayCv2LKUjAPC6kk_ZFddSQMXlgf34GmnCiHMXxgzHNusJ22y7RBrCA_bZFMNEcV6y4LP7pY3h94LT6me6mUK_oItLj0PXUubCMIW0PpzdT-rTc_bEY5_oxX5es-8f3n-7_ZTfffn4-fbdXe6qsp5zRBJeIknfQItKN7V0VDXGGYTGCKLa1dzoxnuvjKld5SoCpaH04LjQjbhmb86567a_TpRmO3TJUd_jSOGUrDJKK8PFRSgqqU2l1EXIt8RSwmUooaxXvMLqDF0MKUXydordgHGxHOzWqT3avVO7dWqhtGun69yr_YNTM1D7f2ovcQWvd4DJYe8jjq5L_1wJupRCb0Fvz24thh46ija5jkZHbRfJzbYN3YVV_gJtbsTZ</recordid><startdate>20081130</startdate><enddate>20081130</enddate><creator>Jang, Suk Hyun</creator><creator>Jeong, Young Gyu</creator><creator>Min, Byung Gil</creator><creator>Lyoo, Won Seok</creator><creator>Lee, Sang Cheol</creator><general>Elsevier B.V</general><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>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7U7</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope></search><sort><creationdate>20081130</creationdate><title>Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels</title><author>Jang, Suk Hyun ; Jeong, Young Gyu ; Min, Byung Gil ; Lyoo, Won Seok ; Lee, Sang Cheol</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c527t-aae3f4ae4fb0da68b74ce5b9c9a0b93ee7c7198bfff6997c5c5e06802f0c138b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Acrylic Resins - chemical synthesis</topic><topic>Acrylic Resins - chemistry</topic><topic>Adsorbent</topic><topic>Adsorption</topic><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Chromatography, Ion Exchange</topic><topic>Durapatite - chemical synthesis</topic><topic>Durapatite - chemistry</topic><topic>Exact sciences and technology</topic><topic>Heavy metal</topic><topic>Hydrogel</topic><topic>Hydrogels - chemical synthesis</topic><topic>Hydrogels - chemistry</topic><topic>Hydrogen-Ion Concentration</topic><topic>Hydroxyapatite</topic><topic>Ion exchange</topic><topic>Lead - isolation & purification</topic><topic>Microscopy, Electron, Scanning</topic><topic>Models, Statistical</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Pollution</topic><topic>Polyacrylamide</topic><topic>Polymerization</topic><topic>Preparation, kinetics, thermodynamics, mechanism and catalysts</topic><topic>Solutions</topic><topic>Spectrophotometry, Atomic</topic><topic>Thermodynamics</topic><topic>X-Ray Diffraction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jang, Suk Hyun</creatorcontrib><creatorcontrib>Jeong, Young Gyu</creatorcontrib><creatorcontrib>Min, Byung Gil</creatorcontrib><creatorcontrib>Lyoo, Won Seok</creatorcontrib><creatorcontrib>Lee, Sang Cheol</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>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Toxicology Abstracts</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>Jang, Suk Hyun</au><au>Jeong, Young Gyu</au><au>Min, Byung Gil</au><au>Lyoo, Won Seok</au><au>Lee, Sang Cheol</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2008-11-30</date><risdate>2008</risdate><volume>159</volume><issue>2</issue><spage>294</spage><epage>299</epage><pages>294-299</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><coden>JHMAD9</coden><abstract>We report the synthesis of hydroxyapatite/polyacrylamide (HAp/PAAm) composite hydrogels with various HAp contents by free radical polymerization and their removal capability of Pb
2+ ions in aqueous solutions with controlled initial Pb
2+ ion concentrations and pH values of 2–5. The swelling ratio of the composite gels in aqueous solutions decreases with increasing the HAp content in the gels. The composite gel with higher HAp content exhibits the higher removal capacity of Pb
2+ ions owing to the higher adsorption sites for Pb
2+ ions, but shows the slower removal rate of Pb
2+ ions due to the lower degree of swelling. The removal mechanism of Pb
2+ ion is very sensitive to the pH value in aqueous solution, although the removed amount of Pb
2+ ion is nearly same, regardless of pH values of 2–5. The removal mechanism, the dissolution of HAp in the composite gel and subsequent precipitation of hydroxypyromorphite (HPy), is dominant at lower pH 2–3, whereas the mechanism, the adsorption of Pb
2+ ions on the composite gel and following cation exchange reaction between Pb
2+ ions adsorbed and Ca
2+ of HAp, is dominant at higher pH 4–5. The equilibrium removal process of Pb
2+ ions by the composite gels at pH 5 is described well with the Langmuir isotherm model. The equilibrium removal capacities of the composite gels with 30, 50, and 70
wt.% HAp contents are evaluated to be 123, 178, and 209
mg/g, respectively.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>18430514</pmid><doi>10.1016/j.jhazmat.2008.02.018</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0304-3894 |
| ispartof | Journal of hazardous materials, 2008-11, Vol.159 (2), p.294-299 |
| issn | 0304-3894 1873-3336 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_69686913 |
| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Acrylic Resins - chemical synthesis Acrylic Resins - chemistry Adsorbent Adsorption Applied sciences Chemical engineering Chromatography, Ion Exchange Durapatite - chemical synthesis Durapatite - chemistry Exact sciences and technology Heavy metal Hydrogel Hydrogels - chemical synthesis Hydrogels - chemistry Hydrogen-Ion Concentration Hydroxyapatite Ion exchange Lead - isolation & purification Microscopy, Electron, Scanning Models, Statistical Organic polymers Physicochemistry of polymers Pollution Polyacrylamide Polymerization Preparation, kinetics, thermodynamics, mechanism and catalysts Solutions Spectrophotometry, Atomic Thermodynamics X-Ray Diffraction |
| title | Preparation and lead ion removal property of hydroxyapatite/polyacrylamide composite hydrogels |
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