Equilibrium isotherms, kinetics and thermodynamics studies of phenolic compounds adsorption on palm-tree fruit stones
Adsorption capacity of an agricultural waste, palm-tree fruit stones (date stones), for phenolic compounds such as phenol (Ph) and p-nitro phenol (PNPh) at different temperatures was investigated. The characteristics of such waste biomass were determined and found to have a surface area and iodine n...
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| Veröffentlicht in: | Ecotoxicology and environmental safety 2012-10, Vol.84, p.39-45 |
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| creator | Ahmed, Muthanna J. Theydan, Samar K. |
| description | Adsorption capacity of an agricultural waste, palm-tree fruit stones (date stones), for phenolic compounds such as phenol (Ph) and p-nitro phenol (PNPh) at different temperatures was investigated. The characteristics of such waste biomass were determined and found to have a surface area and iodine number of 495.71m2/g and 475.88mg/g, respectively. The effects of pH (2-12), adsorbent dose (0.6–0.8g/L) and contact time (0–150min) on the adsorptive removal process were studied. Maximum removal percentages of 89.95% and 92.11% were achieved for Ph and PNPh, respectively. Experimental equilibrium data for adsorption of both components were analyzed by the Langmuir, Freundlich and Tempkin isotherm models. The results show that the best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacities of 132.37 and 161.44mg/g for Ph and PNPh, respectively. The kinetic data were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion models, and was found to follow closely the pseudo-second order model for both components. The calculated thermodynamic parameters, namely ΔG, ΔH, and ΔS showed that adsorption of Ph and PNPh was spontaneous and endothermic under examined conditions.
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► Date stones were used to remove phenol (Ph) and p-nitro phenol (PNPh) from aqueous solutions. ► Maximum removal percentages of 89.95% and 92.11 % were achieved for Ph and PNPh, respectively. ► The isotherm data were well fitted to the Langmuir isotherm. ► Maximum adsorption capacities of 132.37 and 161.44mg/g were obtained for Ph and PNPh, respectively. ► The kinetic data were well described by pseudo-second order model. |
| doi_str_mv | 10.1016/j.ecoenv.2012.06.019 |
| format | Article |
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[Display omitted]
► Date stones were used to remove phenol (Ph) and p-nitro phenol (PNPh) from aqueous solutions. ► Maximum removal percentages of 89.95% and 92.11 % were achieved for Ph and PNPh, respectively. ► The isotherm data were well fitted to the Langmuir isotherm. ► Maximum adsorption capacities of 132.37 and 161.44mg/g were obtained for Ph and PNPh, respectively. ► The kinetic data were well described by pseudo-second order model.</description><identifier>ISSN: 0147-6513</identifier><identifier>EISSN: 1090-2414</identifier><identifier>DOI: 10.1016/j.ecoenv.2012.06.019</identifier><identifier>PMID: 22795888</identifier><identifier>CODEN: EESADV</identifier><language>eng</language><publisher>San Diego, CA: Elsevier Inc</publisher><subject>Adsorption ; Adsorption isotherms ; agricultural wastes ; Animal, plant and microbial ecology ; Applied ecology ; Arecaceae - metabolism ; Biological and medical sciences ; biomass ; Date stones ; Ecotoxicology, biological effects of pollution ; equations ; Fundamental and applied biological sciences. Psychology ; General aspects ; Hydrogen-Ion Concentration ; iodine value ; Kinetics ; p-nitro phenol ; Phenol ; Phenols - metabolism ; Seeds - metabolism ; sorption isotherms ; stone fruits ; surface area ; temperature ; thermodynamics ; Time Factors ; Water Pollutants, Chemical - metabolism ; Water Purification</subject><ispartof>Ecotoxicology and environmental safety, 2012-10, Vol.84, p.39-45</ispartof><rights>2012 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2012 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c416t-16d1c79e968d1dd8fadc9e2bf9d1fe66f2fc6d9b7f82bb1b5b98ce2e634a38633</citedby><cites>FETCH-LOGICAL-c416t-16d1c79e968d1dd8fadc9e2bf9d1fe66f2fc6d9b7f82bb1b5b98ce2e634a38633</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ecoenv.2012.06.019$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26351164$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22795888$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ahmed, Muthanna J.</creatorcontrib><creatorcontrib>Theydan, Samar K.</creatorcontrib><title>Equilibrium isotherms, kinetics and thermodynamics studies of phenolic compounds adsorption on palm-tree fruit stones</title><title>Ecotoxicology and environmental safety</title><addtitle>Ecotoxicol Environ Saf</addtitle><description>Adsorption capacity of an agricultural waste, palm-tree fruit stones (date stones), for phenolic compounds such as phenol (Ph) and p-nitro phenol (PNPh) at different temperatures was investigated. The characteristics of such waste biomass were determined and found to have a surface area and iodine number of 495.71m2/g and 475.88mg/g, respectively. The effects of pH (2-12), adsorbent dose (0.6–0.8g/L) and contact time (0–150min) on the adsorptive removal process were studied. Maximum removal percentages of 89.95% and 92.11% were achieved for Ph and PNPh, respectively. Experimental equilibrium data for adsorption of both components were analyzed by the Langmuir, Freundlich and Tempkin isotherm models. The results show that the best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacities of 132.37 and 161.44mg/g for Ph and PNPh, respectively. The kinetic data were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion models, and was found to follow closely the pseudo-second order model for both components. The calculated thermodynamic parameters, namely ΔG, ΔH, and ΔS showed that adsorption of Ph and PNPh was spontaneous and endothermic under examined conditions.
[Display omitted]
► Date stones were used to remove phenol (Ph) and p-nitro phenol (PNPh) from aqueous solutions. ► Maximum removal percentages of 89.95% and 92.11 % were achieved for Ph and PNPh, respectively. ► The isotherm data were well fitted to the Langmuir isotherm. ► Maximum adsorption capacities of 132.37 and 161.44mg/g were obtained for Ph and PNPh, respectively. ► The kinetic data were well described by pseudo-second order model.</description><subject>Adsorption</subject><subject>Adsorption isotherms</subject><subject>agricultural wastes</subject><subject>Animal, plant and microbial ecology</subject><subject>Applied ecology</subject><subject>Arecaceae - metabolism</subject><subject>Biological and medical sciences</subject><subject>biomass</subject><subject>Date stones</subject><subject>Ecotoxicology, biological effects of pollution</subject><subject>equations</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects</subject><subject>Hydrogen-Ion Concentration</subject><subject>iodine value</subject><subject>Kinetics</subject><subject>p-nitro phenol</subject><subject>Phenol</subject><subject>Phenols - metabolism</subject><subject>Seeds - metabolism</subject><subject>sorption isotherms</subject><subject>stone fruits</subject><subject>surface area</subject><subject>temperature</subject><subject>thermodynamics</subject><subject>Time Factors</subject><subject>Water Pollutants, Chemical - metabolism</subject><subject>Water Purification</subject><issn>0147-6513</issn><issn>1090-2414</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kF1rFTEQhoMo9vToPxDdG8ELd83sRza5KUhpVSh4ob0O2WRic9xNtsluof_eHPeod8LAwPC8M8NDyCugFVBgHw4V6oD-oaop1BVlFQXxhOyAClrWLbRPyY5C25esg-aMnKd0oJQ2tOuek7O67kXHOd-R9ep-daMbolunwqWw3GGc0vvip_O4OJ0K5U3xexjMo1fTcZSW1ThMRbDFfIc-jE4XOkxzWL3JAZNCnBcXfJFrVuNULhGxsHF1S84Gj-kFeWbVmPDlqe_J7fXV98vP5c3XT18uP96UugW2lMAM6F6gYNyAMdwqowXWgxUGLDJma6uZEUNveT0MMHSD4BprZE2rGs6aZk_ebXvnGO5XTIucXNI4jspjWJME2nDaU9bxjLYbqmNIKaKVc3STio8Zkkfh8iA34fIoXFIms_Ace326sA4Tmr-hP4Yz8PYEqKTVaKPy2qV_HGs6ANZm7s3GWRWk-hEzc_stX2ophV6w_OmeXGwEZmMPDqNM2qHXaFxEvUgT3P9__QXN4a12</recordid><startdate>20121001</startdate><enddate>20121001</enddate><creator>Ahmed, Muthanna J.</creator><creator>Theydan, Samar K.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>FBQ</scope><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>7X8</scope></search><sort><creationdate>20121001</creationdate><title>Equilibrium isotherms, kinetics and thermodynamics studies of phenolic compounds adsorption on palm-tree fruit stones</title><author>Ahmed, Muthanna J. ; Theydan, Samar K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c416t-16d1c79e968d1dd8fadc9e2bf9d1fe66f2fc6d9b7f82bb1b5b98ce2e634a38633</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Adsorption</topic><topic>Adsorption isotherms</topic><topic>agricultural wastes</topic><topic>Animal, plant and microbial ecology</topic><topic>Applied ecology</topic><topic>Arecaceae - metabolism</topic><topic>Biological and medical sciences</topic><topic>biomass</topic><topic>Date stones</topic><topic>Ecotoxicology, biological effects of pollution</topic><topic>equations</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General aspects</topic><topic>Hydrogen-Ion Concentration</topic><topic>iodine value</topic><topic>Kinetics</topic><topic>p-nitro phenol</topic><topic>Phenol</topic><topic>Phenols - metabolism</topic><topic>Seeds - metabolism</topic><topic>sorption isotherms</topic><topic>stone fruits</topic><topic>surface area</topic><topic>temperature</topic><topic>thermodynamics</topic><topic>Time Factors</topic><topic>Water Pollutants, Chemical - metabolism</topic><topic>Water Purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ahmed, Muthanna J.</creatorcontrib><creatorcontrib>Theydan, Samar K.</creatorcontrib><collection>AGRIS</collection><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>MEDLINE - Academic</collection><jtitle>Ecotoxicology and environmental safety</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ahmed, Muthanna J.</au><au>Theydan, Samar K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Equilibrium isotherms, kinetics and thermodynamics studies of phenolic compounds adsorption on palm-tree fruit stones</atitle><jtitle>Ecotoxicology and environmental safety</jtitle><addtitle>Ecotoxicol Environ Saf</addtitle><date>2012-10-01</date><risdate>2012</risdate><volume>84</volume><spage>39</spage><epage>45</epage><pages>39-45</pages><issn>0147-6513</issn><eissn>1090-2414</eissn><coden>EESADV</coden><abstract>Adsorption capacity of an agricultural waste, palm-tree fruit stones (date stones), for phenolic compounds such as phenol (Ph) and p-nitro phenol (PNPh) at different temperatures was investigated. The characteristics of such waste biomass were determined and found to have a surface area and iodine number of 495.71m2/g and 475.88mg/g, respectively. The effects of pH (2-12), adsorbent dose (0.6–0.8g/L) and contact time (0–150min) on the adsorptive removal process were studied. Maximum removal percentages of 89.95% and 92.11% were achieved for Ph and PNPh, respectively. Experimental equilibrium data for adsorption of both components were analyzed by the Langmuir, Freundlich and Tempkin isotherm models. The results show that the best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacities of 132.37 and 161.44mg/g for Ph and PNPh, respectively. The kinetic data were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion models, and was found to follow closely the pseudo-second order model for both components. The calculated thermodynamic parameters, namely ΔG, ΔH, and ΔS showed that adsorption of Ph and PNPh was spontaneous and endothermic under examined conditions.
[Display omitted]
► Date stones were used to remove phenol (Ph) and p-nitro phenol (PNPh) from aqueous solutions. ► Maximum removal percentages of 89.95% and 92.11 % were achieved for Ph and PNPh, respectively. ► The isotherm data were well fitted to the Langmuir isotherm. ► Maximum adsorption capacities of 132.37 and 161.44mg/g were obtained for Ph and PNPh, respectively. ► The kinetic data were well described by pseudo-second order model.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><pmid>22795888</pmid><doi>10.1016/j.ecoenv.2012.06.019</doi><tpages>7</tpages></addata></record> |
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| subjects | Adsorption Adsorption isotherms agricultural wastes Animal, plant and microbial ecology Applied ecology Arecaceae - metabolism Biological and medical sciences biomass Date stones Ecotoxicology, biological effects of pollution equations Fundamental and applied biological sciences. Psychology General aspects Hydrogen-Ion Concentration iodine value Kinetics p-nitro phenol Phenol Phenols - metabolism Seeds - metabolism sorption isotherms stone fruits surface area temperature thermodynamics Time Factors Water Pollutants, Chemical - metabolism Water Purification |
| title | Equilibrium isotherms, kinetics and thermodynamics studies of phenolic compounds adsorption on palm-tree fruit stones |
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