Impact of environmental conditions on the sorption behavior of Pb(II) in Na-bentonite suspensions
In this study, a local bentonite from Lin’an county (Zhejiang province, China) was converted to Na-purified form and the Na-bentonite sample was characterized by using FTIR and XRD to determine its chemical constituents and micro-structure. The removal of lead from wastewaters by Na-bentonite was st...
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| Veröffentlicht in: | Journal of hazardous materials 2010-11, Vol.183 (1), p.632-640 |
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| creator | Yang, Shitong Zhao, Donglin Zhang, Hui Lu, Songsheng Chen, Lei Yu, Xianjin |
| description | In this study, a local bentonite from Lin’an county (Zhejiang province, China) was converted to Na-purified form and the Na-bentonite sample was characterized by using FTIR and XRD to determine its chemical constituents and micro-structure. The removal of lead from wastewaters by Na-bentonite was studied as a function of various environmental parameters such as contact time, pH, ionic strength, foreign ions, humic substances and temperature under ambient conditions. The results indicated that the sorption of Pb(II) on Na-bentonite was strongly dependent on pH and ionic strength. The Langmuir, Freundlich and D–R models were used to simulate the sorption isotherms of Pb(II) at three different temperatures of 298, 318 and 338
K. The thermodynamic parameters (Δ
H°, Δ
S° and Δ
G°) calculated from the temperature dependent sorption isotherms indicated that the sorption process of Pb(II) on Na-bentonite was endothermic and spontaneous. At low pH, the sorption of Pb(II) was dominated by outer-sphere surface complexation and ion exchange with Na
+/H
+ on Na-bentonite surfaces, whereas inner-sphere surface complexation was the main sorption mechanism at high pH. From the experimental results, it is possible to conclude that Na-bentonite has good potentialities for cost-effective disposal of lead bearing wastewaters. |
| doi_str_mv | 10.1016/j.jhazmat.2010.07.072 |
| format | Article |
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K. The thermodynamic parameters (Δ
H°, Δ
S° and Δ
G°) calculated from the temperature dependent sorption isotherms indicated that the sorption process of Pb(II) on Na-bentonite was endothermic and spontaneous. At low pH, the sorption of Pb(II) was dominated by outer-sphere surface complexation and ion exchange with Na
+/H
+ on Na-bentonite surfaces, whereas inner-sphere surface complexation was the main sorption mechanism at high pH. From the experimental results, it is possible to conclude that Na-bentonite has good potentialities for cost-effective disposal of lead bearing wastewaters.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2010.07.072</identifier><identifier>PMID: 20728269</identifier><identifier>CODEN: JHMAD9</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>Adsorption ; Applied sciences ; Bentonite - chemistry ; Chemical engineering ; China ; Complexation ; Contact ; Environment ; Environmental impact ; Exact sciences and technology ; General purification processes ; Humic substances ; Hydrogen-Ion Concentration ; Ion exchange ; Isotherms ; Lead - isolation & purification ; Mathematical models ; Na-bentonite ; Osmolar Concentration ; Pb(II) ; Pollution ; Sodium ; Sorption ; Strength ; Suspensions - chemistry ; Thermodynamic data ; Waste water ; Wastewaters ; Water Pollutants, Chemical - isolation & purification ; Water treatment and pollution</subject><ispartof>Journal of hazardous materials, 2010-11, Vol.183 (1), p.632-640</ispartof><rights>2010 Elsevier B.V.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2010 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c525t-1f8aa26accdc6f3a8f2ea0eb98035d966426a88129a0b5d9cc3f256eff85ed043</citedby><cites>FETCH-LOGICAL-c525t-1f8aa26accdc6f3a8f2ea0eb98035d966426a88129a0b5d9cc3f256eff85ed043</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S030438941000957X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=23307420$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20728269$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yang, Shitong</creatorcontrib><creatorcontrib>Zhao, Donglin</creatorcontrib><creatorcontrib>Zhang, Hui</creatorcontrib><creatorcontrib>Lu, Songsheng</creatorcontrib><creatorcontrib>Chen, Lei</creatorcontrib><creatorcontrib>Yu, Xianjin</creatorcontrib><title>Impact of environmental conditions on the sorption behavior of Pb(II) in Na-bentonite suspensions</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>In this study, a local bentonite from Lin’an county (Zhejiang province, China) was converted to Na-purified form and the Na-bentonite sample was characterized by using FTIR and XRD to determine its chemical constituents and micro-structure. The removal of lead from wastewaters by Na-bentonite was studied as a function of various environmental parameters such as contact time, pH, ionic strength, foreign ions, humic substances and temperature under ambient conditions. The results indicated that the sorption of Pb(II) on Na-bentonite was strongly dependent on pH and ionic strength. The Langmuir, Freundlich and D–R models were used to simulate the sorption isotherms of Pb(II) at three different temperatures of 298, 318 and 338
K. The thermodynamic parameters (Δ
H°, Δ
S° and Δ
G°) calculated from the temperature dependent sorption isotherms indicated that the sorption process of Pb(II) on Na-bentonite was endothermic and spontaneous. At low pH, the sorption of Pb(II) was dominated by outer-sphere surface complexation and ion exchange with Na
+/H
+ on Na-bentonite surfaces, whereas inner-sphere surface complexation was the main sorption mechanism at high pH. From the experimental results, it is possible to conclude that Na-bentonite has good potentialities for cost-effective disposal of lead bearing wastewaters.</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Bentonite - chemistry</subject><subject>Chemical engineering</subject><subject>China</subject><subject>Complexation</subject><subject>Contact</subject><subject>Environment</subject><subject>Environmental impact</subject><subject>Exact sciences and technology</subject><subject>General purification processes</subject><subject>Humic substances</subject><subject>Hydrogen-Ion Concentration</subject><subject>Ion exchange</subject><subject>Isotherms</subject><subject>Lead - isolation & purification</subject><subject>Mathematical models</subject><subject>Na-bentonite</subject><subject>Osmolar Concentration</subject><subject>Pb(II)</subject><subject>Pollution</subject><subject>Sodium</subject><subject>Sorption</subject><subject>Strength</subject><subject>Suspensions - chemistry</subject><subject>Thermodynamic data</subject><subject>Waste water</subject><subject>Wastewaters</subject><subject>Water Pollutants, Chemical - isolation & purification</subject><subject>Water treatment and pollution</subject><issn>0304-3894</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU-LFDEQxYMo7jj6EZS-iOuhx0rSf9InkcVdBxb1oOdQna4wGbqTMekZ0E9vmhn15kIg8Or3qop6jL3ksOHAm3f7zX6HvyacNwKyBm1-4hFbcdXKUkrZPGYrkFCVUnXVFXuW0h4AeFtXT9mVyKwSTbdiuJ0OaOYi2IL8ycXgJ_IzjoUJfnCzCz4VwRfzjooU4mERip52eHIhLqav_fV2-7ZwvviMZZ-twbs5s8d0IJ8W-3P2xOKY6MXlX7Pvtx-_3Xwq77_cbW8-3JemFvVccqsQRYPGDKaxEpUVhEB9p0DWQ9c0VS4qxUWH0GfBGGlF3ZC1qqYBKrlmb859DzH8OFKa9eSSoXFET-GYdKtaIQUXzcNkXQEscCav_0vytgUpu6pemtZn1MSQUiSrD9FNGH9qDnpJTO_1JTG9JKah1cuQNXt1GXHsJxr-uv5ElIHXFwCTwdFG9Malf5yU0FYCMvf-zFE-8slR1Mk48oYGF8nMegjugVV-A8kxtyM</recordid><startdate>20101115</startdate><enddate>20101115</enddate><creator>Yang, Shitong</creator><creator>Zhao, Donglin</creator><creator>Zhang, Hui</creator><creator>Lu, Songsheng</creator><creator>Chen, Lei</creator><creator>Yu, Xianjin</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>7QQ</scope><scope>7SR</scope><scope>7SU</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>7X8</scope><scope>7ST</scope><scope>7U7</scope><scope>SOI</scope></search><sort><creationdate>20101115</creationdate><title>Impact of environmental conditions on the sorption behavior of Pb(II) in Na-bentonite suspensions</title><author>Yang, Shitong ; Zhao, Donglin ; Zhang, Hui ; Lu, Songsheng ; Chen, Lei ; Yu, Xianjin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c525t-1f8aa26accdc6f3a8f2ea0eb98035d966426a88129a0b5d9cc3f256eff85ed043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Adsorption</topic><topic>Applied sciences</topic><topic>Bentonite - chemistry</topic><topic>Chemical engineering</topic><topic>China</topic><topic>Complexation</topic><topic>Contact</topic><topic>Environment</topic><topic>Environmental impact</topic><topic>Exact sciences and technology</topic><topic>General purification processes</topic><topic>Humic substances</topic><topic>Hydrogen-Ion Concentration</topic><topic>Ion exchange</topic><topic>Isotherms</topic><topic>Lead - isolation & purification</topic><topic>Mathematical models</topic><topic>Na-bentonite</topic><topic>Osmolar Concentration</topic><topic>Pb(II)</topic><topic>Pollution</topic><topic>Sodium</topic><topic>Sorption</topic><topic>Strength</topic><topic>Suspensions - chemistry</topic><topic>Thermodynamic data</topic><topic>Waste water</topic><topic>Wastewaters</topic><topic>Water Pollutants, Chemical - isolation & purification</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, Shitong</creatorcontrib><creatorcontrib>Zhao, Donglin</creatorcontrib><creatorcontrib>Zhang, Hui</creatorcontrib><creatorcontrib>Lu, Songsheng</creatorcontrib><creatorcontrib>Chen, Lei</creatorcontrib><creatorcontrib>Yu, Xianjin</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>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Environmental Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><collection>Environment Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, Shitong</au><au>Zhao, Donglin</au><au>Zhang, Hui</au><au>Lu, Songsheng</au><au>Chen, Lei</au><au>Yu, Xianjin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Impact of environmental conditions on the sorption behavior of Pb(II) in Na-bentonite suspensions</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2010-11-15</date><risdate>2010</risdate><volume>183</volume><issue>1</issue><spage>632</spage><epage>640</epage><pages>632-640</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><coden>JHMAD9</coden><abstract>In this study, a local bentonite from Lin’an county (Zhejiang province, China) was converted to Na-purified form and the Na-bentonite sample was characterized by using FTIR and XRD to determine its chemical constituents and micro-structure. The removal of lead from wastewaters by Na-bentonite was studied as a function of various environmental parameters such as contact time, pH, ionic strength, foreign ions, humic substances and temperature under ambient conditions. The results indicated that the sorption of Pb(II) on Na-bentonite was strongly dependent on pH and ionic strength. The Langmuir, Freundlich and D–R models were used to simulate the sorption isotherms of Pb(II) at three different temperatures of 298, 318 and 338
K. The thermodynamic parameters (Δ
H°, Δ
S° and Δ
G°) calculated from the temperature dependent sorption isotherms indicated that the sorption process of Pb(II) on Na-bentonite was endothermic and spontaneous. At low pH, the sorption of Pb(II) was dominated by outer-sphere surface complexation and ion exchange with Na
+/H
+ on Na-bentonite surfaces, whereas inner-sphere surface complexation was the main sorption mechanism at high pH. From the experimental results, it is possible to conclude that Na-bentonite has good potentialities for cost-effective disposal of lead bearing wastewaters.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><pmid>20728269</pmid><doi>10.1016/j.jhazmat.2010.07.072</doi><tpages>9</tpages></addata></record> |
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| identifier | ISSN: 0304-3894 |
| ispartof | Journal of hazardous materials, 2010-11, Vol.183 (1), p.632-640 |
| issn | 0304-3894 1873-3336 |
| language | eng |
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| subjects | Adsorption Applied sciences Bentonite - chemistry Chemical engineering China Complexation Contact Environment Environmental impact Exact sciences and technology General purification processes Humic substances Hydrogen-Ion Concentration Ion exchange Isotherms Lead - isolation & purification Mathematical models Na-bentonite Osmolar Concentration Pb(II) Pollution Sodium Sorption Strength Suspensions - chemistry Thermodynamic data Waste water Wastewaters Water Pollutants, Chemical - isolation & purification Water treatment and pollution |
| title | Impact of environmental conditions on the sorption behavior of Pb(II) in Na-bentonite suspensions |
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