Mutual Effects of Pb(II) and Humic Acid Adsorption on Multiwalled Carbon Nanotubes/Polyacrylamide Composites from Aqueous Solutions
This paper examines the adsorption of Pb(II) and a natural organic macromolecular compound (humic acid, HA) on polyacrylamide (PAAM) -grafted multiwalled carbon nanotubes (denoted as MWCNTs/PAAM), prepared by an N2-plasma-induced grafting technique. The mutual effects of HA/Pb(II) on Pb(II) and HA a...
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| Veröffentlicht in: | Environmental science & technology 2011-04, Vol.45 (8), p.3621-3627 |
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| creator | Yang, Shubin Hu, Jun Chen, Changlun Shao, Dadong Wang, Xiangke |
| description | This paper examines the adsorption of Pb(II) and a natural organic macromolecular compound (humic acid, HA) on polyacrylamide (PAAM) -grafted multiwalled carbon nanotubes (denoted as MWCNTs/PAAM), prepared by an N2-plasma-induced grafting technique. The mutual effects of HA/Pb(II) on Pb(II) and HA adsorption on MWCNTs/PAAM, as well as the effects of pH, ionic strength, HA/Pb(II) concentrations, and the addition sequences of HA/Pb(II) were investigated. The results indicated that Pb(II) and HA adsorption were strongly dependent on pH and ionic strength. The presence of HA led to a strong increase in Pb(II) adsorption at low pH and a decrease at high pH, whereas the presence of Pb(II) led to an increase in HA adsorption. The adsorbed HA contributed to modification of adsorbent surface properties and partial complexation of Pb(II) with the adsorbed HA. Different effects of HA/Pb(II) concentrations and addition sequences on Pb(II) and HA adsorption were observed, indicating different adsorption mechanisms. After adsorption of HA on MWCNTs/PAAM, the adsorption capacity for Pb(II) was enhanced at pH 5.0; the adsorption capacity for HA was also enhanced after Pb(II) adsorption on MWCNTs/PAAM. These results are important for estimating and optimizing the removal of metal ions and organic substances by use of MWCNT/PAAM composites. |
| doi_str_mv | 10.1021/es104047d |
| format | Article |
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The mutual effects of HA/Pb(II) on Pb(II) and HA adsorption on MWCNTs/PAAM, as well as the effects of pH, ionic strength, HA/Pb(II) concentrations, and the addition sequences of HA/Pb(II) were investigated. The results indicated that Pb(II) and HA adsorption were strongly dependent on pH and ionic strength. The presence of HA led to a strong increase in Pb(II) adsorption at low pH and a decrease at high pH, whereas the presence of Pb(II) led to an increase in HA adsorption. The adsorbed HA contributed to modification of adsorbent surface properties and partial complexation of Pb(II) with the adsorbed HA. Different effects of HA/Pb(II) concentrations and addition sequences on Pb(II) and HA adsorption were observed, indicating different adsorption mechanisms. After adsorption of HA on MWCNTs/PAAM, the adsorption capacity for Pb(II) was enhanced at pH 5.0; the adsorption capacity for HA was also enhanced after Pb(II) adsorption on MWCNTs/PAAM. These results are important for estimating and optimizing the removal of metal ions and organic substances by use of MWCNT/PAAM composites.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es104047d</identifier><identifier>PMID: 21395259</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Acidity ; Acrylic Resins - chemistry ; Adsorption ; Applied sciences ; Aqueous solutions ; Carbon ; Composite materials ; Drinking water and swimming-pool water. Desalination ; Exact sciences and technology ; General purification processes ; Humic Substances - analysis ; Hydrogen-Ion Concentration ; Ions ; Lead ; Lead - analysis ; Lead - chemistry ; Nanotubes ; Nanotubes, Carbon - chemistry ; Nanotubes, Carbon - ultrastructure ; Organic chemistry ; Osmolar Concentration ; Pollution ; Remediation and Control Technologies ; Waste Disposal, Fluid ; Wastewaters ; Water Pollutants, Chemical - analysis ; Water Pollutants, Chemical - chemistry ; Water Purification - methods ; Water treatment and pollution</subject><ispartof>Environmental science & technology, 2011-04, Vol.45 (8), p.3621-3627</ispartof><rights>Copyright © 2011 American Chemical Society</rights><rights>2015 INIST-CNRS</rights><rights>Copyright American Chemical Society Apr 15, 2011</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a437t-33df8f09b089518af9b03146b9a1ceb8d2ab325e2c60b10b1a998810115afdf33</citedby><cites>FETCH-LOGICAL-a437t-33df8f09b089518af9b03146b9a1ceb8d2ab325e2c60b10b1a998810115afdf33</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/es104047d$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es104047d$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>315,781,785,2766,27080,27928,27929,56742,56792</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24098999$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21395259$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yang, Shubin</creatorcontrib><creatorcontrib>Hu, Jun</creatorcontrib><creatorcontrib>Chen, Changlun</creatorcontrib><creatorcontrib>Shao, Dadong</creatorcontrib><creatorcontrib>Wang, Xiangke</creatorcontrib><title>Mutual Effects of Pb(II) and Humic Acid Adsorption on Multiwalled Carbon Nanotubes/Polyacrylamide Composites from Aqueous Solutions</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>This paper examines the adsorption of Pb(II) and a natural organic macromolecular compound (humic acid, HA) on polyacrylamide (PAAM) -grafted multiwalled carbon nanotubes (denoted as MWCNTs/PAAM), prepared by an N2-plasma-induced grafting technique. The mutual effects of HA/Pb(II) on Pb(II) and HA adsorption on MWCNTs/PAAM, as well as the effects of pH, ionic strength, HA/Pb(II) concentrations, and the addition sequences of HA/Pb(II) were investigated. The results indicated that Pb(II) and HA adsorption were strongly dependent on pH and ionic strength. The presence of HA led to a strong increase in Pb(II) adsorption at low pH and a decrease at high pH, whereas the presence of Pb(II) led to an increase in HA adsorption. The adsorbed HA contributed to modification of adsorbent surface properties and partial complexation of Pb(II) with the adsorbed HA. Different effects of HA/Pb(II) concentrations and addition sequences on Pb(II) and HA adsorption were observed, indicating different adsorption mechanisms. After adsorption of HA on MWCNTs/PAAM, the adsorption capacity for Pb(II) was enhanced at pH 5.0; the adsorption capacity for HA was also enhanced after Pb(II) adsorption on MWCNTs/PAAM. These results are important for estimating and optimizing the removal of metal ions and organic substances by use of MWCNT/PAAM composites.</description><subject>Acidity</subject><subject>Acrylic Resins - chemistry</subject><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Aqueous solutions</subject><subject>Carbon</subject><subject>Composite materials</subject><subject>Drinking water and swimming-pool water. Desalination</subject><subject>Exact sciences and technology</subject><subject>General purification processes</subject><subject>Humic Substances - analysis</subject><subject>Hydrogen-Ion Concentration</subject><subject>Ions</subject><subject>Lead</subject><subject>Lead - analysis</subject><subject>Lead - chemistry</subject><subject>Nanotubes</subject><subject>Nanotubes, Carbon - chemistry</subject><subject>Nanotubes, Carbon - ultrastructure</subject><subject>Organic chemistry</subject><subject>Osmolar Concentration</subject><subject>Pollution</subject><subject>Remediation and Control Technologies</subject><subject>Waste Disposal, Fluid</subject><subject>Wastewaters</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water Purification - methods</subject><subject>Water treatment and pollution</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpl0V1rFDEUBuAgFrtWL_wDEgTRXow9SWZmk8tlqXah1YIK3g1n8gFTMpM1mSB73T_eLF3bonAgITycvPAS8obBJwacndnEoIZ6aZ6RBWs4VI1s2HOyAGCiUqL9dUxepnQDAFyAfEGOOROq4Y1akNurPGf09Nw5q-dEg6PX_cfN5pTiZOhFHgdNV3owdGVSiNt5CBMtc5X9PPxB762ha4x9efqKU5hzb9PZdfA71HHncRyMpeswbkMaZpuoi2Gkq9_Zhpzo9-Dzfl96RY4c-mRfH84T8vPz-Y_1RXX57ctmvbqssBbLuRLCOOlA9SBVwyS6chOsbnuFTNteGo694I3luoWelUGlpGTAWIPOOCFOyIf7vdsYSoY0d-OQtPUep32gTrYcoOVLVeS7f-RNyHEq4Qpqa87Vkhd0eo90DClF67ptHEaMu45Bt--le-il2LeHhbkfrXmQf4so4P0BYNLoXcRJD-nR1aCkUk8c6vQY6v8P7wBYvaFP</recordid><startdate>20110415</startdate><enddate>20110415</enddate><creator>Yang, Shubin</creator><creator>Hu, Jun</creator><creator>Chen, Changlun</creator><creator>Shao, Dadong</creator><creator>Wang, Xiangke</creator><general>American Chemical Society</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>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></search><sort><creationdate>20110415</creationdate><title>Mutual Effects of Pb(II) and Humic Acid Adsorption on Multiwalled Carbon Nanotubes/Polyacrylamide Composites from Aqueous Solutions</title><author>Yang, Shubin ; Hu, Jun ; Chen, Changlun ; Shao, Dadong ; Wang, Xiangke</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a437t-33df8f09b089518af9b03146b9a1ceb8d2ab325e2c60b10b1a998810115afdf33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acidity</topic><topic>Acrylic Resins - chemistry</topic><topic>Adsorption</topic><topic>Applied sciences</topic><topic>Aqueous solutions</topic><topic>Carbon</topic><topic>Composite materials</topic><topic>Drinking water and swimming-pool water. Desalination</topic><topic>Exact sciences and technology</topic><topic>General purification processes</topic><topic>Humic Substances - analysis</topic><topic>Hydrogen-Ion Concentration</topic><topic>Ions</topic><topic>Lead</topic><topic>Lead - analysis</topic><topic>Lead - chemistry</topic><topic>Nanotubes</topic><topic>Nanotubes, Carbon - chemistry</topic><topic>Nanotubes, Carbon - ultrastructure</topic><topic>Organic chemistry</topic><topic>Osmolar Concentration</topic><topic>Pollution</topic><topic>Remediation and Control Technologies</topic><topic>Waste Disposal, Fluid</topic><topic>Wastewaters</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Pollutants, Chemical - chemistry</topic><topic>Water Purification - methods</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Shubin</creatorcontrib><creatorcontrib>Hu, Jun</creatorcontrib><creatorcontrib>Chen, Changlun</creatorcontrib><creatorcontrib>Shao, Dadong</creatorcontrib><creatorcontrib>Wang, Xiangke</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>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Shubin</au><au>Hu, Jun</au><au>Chen, Changlun</au><au>Shao, Dadong</au><au>Wang, Xiangke</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mutual Effects of Pb(II) and Humic Acid Adsorption on Multiwalled Carbon Nanotubes/Polyacrylamide Composites from Aqueous Solutions</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2011-04-15</date><risdate>2011</risdate><volume>45</volume><issue>8</issue><spage>3621</spage><epage>3627</epage><pages>3621-3627</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>This paper examines the adsorption of Pb(II) and a natural organic macromolecular compound (humic acid, HA) on polyacrylamide (PAAM) -grafted multiwalled carbon nanotubes (denoted as MWCNTs/PAAM), prepared by an N2-plasma-induced grafting technique. The mutual effects of HA/Pb(II) on Pb(II) and HA adsorption on MWCNTs/PAAM, as well as the effects of pH, ionic strength, HA/Pb(II) concentrations, and the addition sequences of HA/Pb(II) were investigated. The results indicated that Pb(II) and HA adsorption were strongly dependent on pH and ionic strength. The presence of HA led to a strong increase in Pb(II) adsorption at low pH and a decrease at high pH, whereas the presence of Pb(II) led to an increase in HA adsorption. The adsorbed HA contributed to modification of adsorbent surface properties and partial complexation of Pb(II) with the adsorbed HA. Different effects of HA/Pb(II) concentrations and addition sequences on Pb(II) and HA adsorption were observed, indicating different adsorption mechanisms. After adsorption of HA on MWCNTs/PAAM, the adsorption capacity for Pb(II) was enhanced at pH 5.0; the adsorption capacity for HA was also enhanced after Pb(II) adsorption on MWCNTs/PAAM. These results are important for estimating and optimizing the removal of metal ions and organic substances by use of MWCNT/PAAM composites.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>21395259</pmid><doi>10.1021/es104047d</doi><tpages>7</tpages></addata></record> |
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| ispartof | Environmental science & technology, 2011-04, Vol.45 (8), p.3621-3627 |
| issn | 0013-936X 1520-5851 |
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| source | MEDLINE; American Chemical Society Journals |
| subjects | Acidity Acrylic Resins - chemistry Adsorption Applied sciences Aqueous solutions Carbon Composite materials Drinking water and swimming-pool water. Desalination Exact sciences and technology General purification processes Humic Substances - analysis Hydrogen-Ion Concentration Ions Lead Lead - analysis Lead - chemistry Nanotubes Nanotubes, Carbon - chemistry Nanotubes, Carbon - ultrastructure Organic chemistry Osmolar Concentration Pollution Remediation and Control Technologies Waste Disposal, Fluid Wastewaters Water Pollutants, Chemical - analysis Water Pollutants, Chemical - chemistry Water Purification - methods Water treatment and pollution |
| title | Mutual Effects of Pb(II) and Humic Acid Adsorption on Multiwalled Carbon Nanotubes/Polyacrylamide Composites from Aqueous Solutions |
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