Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite
Organophilic-bentonite, produced by exchange of cetyltrimethylammonium cation for metal cations on the bentonite, was exploited as adsorbent for removal of catechol from aqueous solutions using batch technique. The dependence of removal on various physico-chemical parameters, such as contact time (1...
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| Veröffentlicht in: | Journal of hazardous materials 2008-02, Vol.150 (3), p.765-773 |
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| container_title | Journal of hazardous materials |
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| creator | Shakir, K. Ghoneimy, H.F. Elkafrawy, A.F. Beheir, Sh.G. Refaat, M. |
| description | Organophilic-bentonite, produced by exchange of cetyltrimethylammonium cation for metal cations on the bentonite, was exploited as adsorbent for removal of catechol from aqueous solutions using batch technique. The dependence of removal on various physico-chemical parameters, such as contact time (1–250
min), concentration (0.8–15.3
mmol
L
−1), temperature (30, 40, 50
±
1
°C) and pH (5–12) of the adsorptive solution were investigated. Obtained results show that catechol could be removed efficiently (∼100%) at pH values ≥9.9. The uptake process follows first-order rate kinetics and the equilibrium data fit well into the Langmuir and Freundlich adsorption isotherms over a wide range of concentration (1–10
mmol
L
−1). The magnitude of change of free energy (Δ
G°), enthalpy (Δ
H°) and entropy (Δ
S°) were determined. |
| doi_str_mv | 10.1016/j.jhazmat.2007.05.037 |
| format | Article |
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min), concentration (0.8–15.3
mmol
L
−1), temperature (30, 40, 50
±
1
°C) and pH (5–12) of the adsorptive solution were investigated. Obtained results show that catechol could be removed efficiently (∼100%) at pH values ≥9.9. The uptake process follows first-order rate kinetics and the equilibrium data fit well into the Langmuir and Freundlich adsorption isotherms over a wide range of concentration (1–10
mmol
L
−1). The magnitude of change of free energy (Δ
G°), enthalpy (Δ
H°) and entropy (Δ
S°) were determined.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2007.05.037</identifier><identifier>PMID: 17587494</identifier><identifier>CODEN: JHMAD9</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Adsorption ; Applied sciences ; Bentonite - chemistry ; Catechol removal ; Catechols - chemistry ; Cetrimonium Compounds - chemistry ; Chemical engineering ; Exact sciences and technology ; Hydrogen-Ion Concentration ; Kinetics ; Organophilic-bentonite ; Phenols ; Pollution ; Quaternary ammonium salts ; Solutions ; Thermodynamics ; Water Pollutants, Chemical - chemistry ; Water Purification - methods</subject><ispartof>Journal of hazardous materials, 2008-02, Vol.150 (3), p.765-773</ispartof><rights>2007 Elsevier B.V.</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c527t-bf0b1d56c8e9fcb82f3cc7fa8c78c601e4f2a5d86836f492e96e1488d47a5eec3</citedby><cites>FETCH-LOGICAL-c527t-bf0b1d56c8e9fcb82f3cc7fa8c78c601e4f2a5d86836f492e96e1488d47a5eec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jhazmat.2007.05.037$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,45974</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20028512$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17587494$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Shakir, K.</creatorcontrib><creatorcontrib>Ghoneimy, H.F.</creatorcontrib><creatorcontrib>Elkafrawy, A.F.</creatorcontrib><creatorcontrib>Beheir, Sh.G.</creatorcontrib><creatorcontrib>Refaat, M.</creatorcontrib><title>Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>Organophilic-bentonite, produced by exchange of cetyltrimethylammonium cation for metal cations on the bentonite, was exploited as adsorbent for removal of catechol from aqueous solutions using batch technique. The dependence of removal on various physico-chemical parameters, such as contact time (1–250
min), concentration (0.8–15.3
mmol
L
−1), temperature (30, 40, 50
±
1
°C) and pH (5–12) of the adsorptive solution were investigated. Obtained results show that catechol could be removed efficiently (∼100%) at pH values ≥9.9. The uptake process follows first-order rate kinetics and the equilibrium data fit well into the Langmuir and Freundlich adsorption isotherms over a wide range of concentration (1–10
mmol
L
−1). The magnitude of change of free energy (Δ
G°), enthalpy (Δ
H°) and entropy (Δ
S°) were determined.</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Bentonite - chemistry</subject><subject>Catechol removal</subject><subject>Catechols - chemistry</subject><subject>Cetrimonium Compounds - chemistry</subject><subject>Chemical engineering</subject><subject>Exact sciences and technology</subject><subject>Hydrogen-Ion Concentration</subject><subject>Kinetics</subject><subject>Organophilic-bentonite</subject><subject>Phenols</subject><subject>Pollution</subject><subject>Quaternary ammonium salts</subject><subject>Solutions</subject><subject>Thermodynamics</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water Purification - methods</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>eNqFkU9r3DAQxUVpabZpP0KLLu3NjmRJlnwqJaR_IBAo6VnI41FXi21tJW8g-fTRdk173NMww29mHu8R8p6zmjPeXu3q3dY9TW6pG8Z0zVTNhH5BNtxoUQkh2pdkwwSTlTCdvCBvct4xxrhW8jW5KMVo2ckNuf-JU3xwI42eglsQtnGkPsWJuj8HjIdMcxwPS4hzpv0jdUOOaX9saZyXSGP67ea434YxQNVjGc1hwbfklXdjxndrvSS_vt7cX3-vbu--_bj-cluBavRS9Z71fFAtGOw89KbxAkB7Z0AbaBlH6RunBtMa0XrZNdi1yKUxg9ROIYK4JJ9Od_cpFrV5sVPIgOPo5qN0K4oZDVfmLMi7Vned0OdBaZRghhVQnUBIMeeE3u5TmFx6tJzZY0B2Z9eA7DEgy5Rlfx98WB8c-gmH_1trIgX4uAIugxt9cjOE_I8rtxqjeFO4zycOi8EPAZPNEHAGHEJCWOwQwxkpz2RXsxA</recordid><startdate>20080211</startdate><enddate>20080211</enddate><creator>Shakir, K.</creator><creator>Ghoneimy, H.F.</creator><creator>Elkafrawy, A.F.</creator><creator>Beheir, Sh.G.</creator><creator>Refaat, M.</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></search><sort><creationdate>20080211</creationdate><title>Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite</title><author>Shakir, K. ; Ghoneimy, H.F. ; Elkafrawy, A.F. ; Beheir, Sh.G. ; Refaat, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c527t-bf0b1d56c8e9fcb82f3cc7fa8c78c601e4f2a5d86836f492e96e1488d47a5eec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Adsorption</topic><topic>Applied sciences</topic><topic>Bentonite - chemistry</topic><topic>Catechol removal</topic><topic>Catechols - chemistry</topic><topic>Cetrimonium Compounds - chemistry</topic><topic>Chemical engineering</topic><topic>Exact sciences and technology</topic><topic>Hydrogen-Ion Concentration</topic><topic>Kinetics</topic><topic>Organophilic-bentonite</topic><topic>Phenols</topic><topic>Pollution</topic><topic>Quaternary ammonium salts</topic><topic>Solutions</topic><topic>Thermodynamics</topic><topic>Water Pollutants, Chemical - chemistry</topic><topic>Water Purification - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shakir, K.</creatorcontrib><creatorcontrib>Ghoneimy, H.F.</creatorcontrib><creatorcontrib>Elkafrawy, A.F.</creatorcontrib><creatorcontrib>Beheir, Sh.G.</creatorcontrib><creatorcontrib>Refaat, M.</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><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shakir, K.</au><au>Ghoneimy, H.F.</au><au>Elkafrawy, A.F.</au><au>Beheir, Sh.G.</au><au>Refaat, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2008-02-11</date><risdate>2008</risdate><volume>150</volume><issue>3</issue><spage>765</spage><epage>773</epage><pages>765-773</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><coden>JHMAD9</coden><abstract>Organophilic-bentonite, produced by exchange of cetyltrimethylammonium cation for metal cations on the bentonite, was exploited as adsorbent for removal of catechol from aqueous solutions using batch technique. The dependence of removal on various physico-chemical parameters, such as contact time (1–250
min), concentration (0.8–15.3
mmol
L
−1), temperature (30, 40, 50
±
1
°C) and pH (5–12) of the adsorptive solution were investigated. Obtained results show that catechol could be removed efficiently (∼100%) at pH values ≥9.9. The uptake process follows first-order rate kinetics and the equilibrium data fit well into the Langmuir and Freundlich adsorption isotherms over a wide range of concentration (1–10
mmol
L
−1). The magnitude of change of free energy (Δ
G°), enthalpy (Δ
H°) and entropy (Δ
S°) were determined.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>17587494</pmid><doi>10.1016/j.jhazmat.2007.05.037</doi><tpages>9</tpages></addata></record> |
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| ispartof | Journal of hazardous materials, 2008-02, Vol.150 (3), p.765-773 |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Adsorption Applied sciences Bentonite - chemistry Catechol removal Catechols - chemistry Cetrimonium Compounds - chemistry Chemical engineering Exact sciences and technology Hydrogen-Ion Concentration Kinetics Organophilic-bentonite Phenols Pollution Quaternary ammonium salts Solutions Thermodynamics Water Pollutants, Chemical - chemistry Water Purification - methods |
| title | Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite |
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