The influence of pH and temperature changes on the adsorption behavior of organophilic clays used in the stabilization/solidification of hazardous wastes
The effect of temperature, pH, and Na + /Ca 2+ concentration on the adsorptive behavior of organophilic clay used in the solidification/stabilization of hazardous wastes was addressed. The organophilic clay used was montmorillonite type clay modified by cation exchange with a mixed tallow amine as t...
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| Veröffentlicht in: | Journal of environmental engineering and science 2002-03, Vol.1 (2), p.123-133 |
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| container_title | Journal of environmental engineering and science |
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| creator | Uribe, A Bishop, Paul L Pinto, N G |
| description | The effect of temperature, pH, and Na
+
/Ca
2+
concentration on the adsorptive behavior of organophilic clay used in the solidification/stabilization of hazardous wastes was addressed. The organophilic clay used was montmorillonite type clay modified by cation exchange with a mixed tallow amine as the sorbent. The contaminants used in this work were phenol, 2-chlorophenol, aniline, and chlorobenzene. 2-Butanone (also known as methyl ethyl ketone, MEK) was initially studied, but preliminary work showed that the organophilic clay poorly sorbed it and it was not studied further. A group of isothermal tests were performed to clarify specific sorption behaviors due to temperature effects, high pH, and concentration of the cations Na
+
and Ca
2+
. The adsorption capacity of the organophilic clay decreased as follows: chlorobenzene > 2-chlorophenol > phenol > aniline. Desorption in high pH environments was seen for phenol and 2-chlorophenol. Changes in temperature, rise in the pH, or increases in Na
+
/Ca
2+
concentrations had no effect on the adsorption of either aniline or chlorobenzene.Key words: organophilic clay, adsorption, hazardous wastes, solidification/stabilization, isotherm. |
| doi_str_mv | 10.1139/s02-007 |
| format | Article |
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+
/Ca
2+
concentration on the adsorptive behavior of organophilic clay used in the solidification/stabilization of hazardous wastes was addressed. The organophilic clay used was montmorillonite type clay modified by cation exchange with a mixed tallow amine as the sorbent. The contaminants used in this work were phenol, 2-chlorophenol, aniline, and chlorobenzene. 2-Butanone (also known as methyl ethyl ketone, MEK) was initially studied, but preliminary work showed that the organophilic clay poorly sorbed it and it was not studied further. A group of isothermal tests were performed to clarify specific sorption behaviors due to temperature effects, high pH, and concentration of the cations Na
+
and Ca
2+
. The adsorption capacity of the organophilic clay decreased as follows: chlorobenzene > 2-chlorophenol > phenol > aniline. Desorption in high pH environments was seen for phenol and 2-chlorophenol. Changes in temperature, rise in the pH, or increases in Na
+
/Ca
2+
concentrations had no effect on the adsorption of either aniline or chlorobenzene.Key words: organophilic clay, adsorption, hazardous wastes, solidification/stabilization, isotherm.</description><identifier>ISSN: 1496-256X</identifier><identifier>ISSN: 1496-2551</identifier><identifier>EISSN: 1496-256X</identifier><identifier>DOI: 10.1139/s02-007</identifier><language>eng</language><publisher>Ottawa, Canada: NRC Research Press</publisher><subject>aniline ; solidification</subject><ispartof>Journal of environmental engineering and science, 2002-03, Vol.1 (2), p.123-133</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c237t-d2405e7cd79dd26ab3c17eaebd887be5a87495b15e4919d136b5ade1abf0f5473</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Uribe, A</creatorcontrib><creatorcontrib>Bishop, Paul L</creatorcontrib><creatorcontrib>Pinto, N G</creatorcontrib><title>The influence of pH and temperature changes on the adsorption behavior of organophilic clays used in the stabilization/solidification of hazardous wastes</title><title>Journal of environmental engineering and science</title><addtitle>Revue du génie et de la science de l'environnement</addtitle><description>The effect of temperature, pH, and Na
+
/Ca
2+
concentration on the adsorptive behavior of organophilic clay used in the solidification/stabilization of hazardous wastes was addressed. The organophilic clay used was montmorillonite type clay modified by cation exchange with a mixed tallow amine as the sorbent. The contaminants used in this work were phenol, 2-chlorophenol, aniline, and chlorobenzene. 2-Butanone (also known as methyl ethyl ketone, MEK) was initially studied, but preliminary work showed that the organophilic clay poorly sorbed it and it was not studied further. A group of isothermal tests were performed to clarify specific sorption behaviors due to temperature effects, high pH, and concentration of the cations Na
+
and Ca
2+
. The adsorption capacity of the organophilic clay decreased as follows: chlorobenzene > 2-chlorophenol > phenol > aniline. Desorption in high pH environments was seen for phenol and 2-chlorophenol. Changes in temperature, rise in the pH, or increases in Na
+
/Ca
2+
concentrations had no effect on the adsorption of either aniline or chlorobenzene.Key words: organophilic clay, adsorption, hazardous wastes, solidification/stabilization, isotherm.</description><subject>aniline</subject><subject>solidification</subject><issn>1496-256X</issn><issn>1496-2551</issn><issn>1496-256X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNp1kNtKxDAQhoMouK7iK-RKQagmPaW9FPEEgjcK3pVpMt1Guk3NtMr6Jr6tWRUVwZs5MN__M_yM7UtxLGVSnpCIIyHUBpvJtMyjOMsfNn_N22yH6FEImSlZzNjbXYvc9k03Ya-Ru4YPVxx6w0dcDuhhnDxy3UK_QOKu52PAwZDzw2jDWmMLz9b5tdD5BfRuaG1nNdcdrIhPhCa4f6hohDqcXmEtPCHXWWMbqz_WtbyFV_DGTcRfgEakXbbVQEe499Xn7P7i_O7sKrq5vbw-O72JdJyoMTJxKjJU2qjSmDiHOtFSIWBtikLVmEGh0jKrZYZpKUsjk7zOwKCEuhFNlqpkzg4-fQfvniaksVpa0th10GP4ppK5TIoklDk7_AS1d0Qem2rwdgl-VUlRraOvQvRViP7HsvfaIyF43X7DX1A1mCaAR_-Df13fAfLelsM</recordid><startdate>20020301</startdate><enddate>20020301</enddate><creator>Uribe, A</creator><creator>Bishop, Paul L</creator><creator>Pinto, N G</creator><general>NRC Research Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7T2</scope><scope>7U2</scope><scope>C1K</scope></search><sort><creationdate>20020301</creationdate><title>The influence of pH and temperature changes on the adsorption behavior of organophilic clays used in the stabilization/solidification of hazardous wastes</title><author>Uribe, A ; Bishop, Paul L ; Pinto, N G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c237t-d2405e7cd79dd26ab3c17eaebd887be5a87495b15e4919d136b5ade1abf0f5473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>aniline</topic><topic>solidification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Uribe, A</creatorcontrib><creatorcontrib>Bishop, Paul L</creatorcontrib><creatorcontrib>Pinto, N G</creatorcontrib><collection>CrossRef</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Safety Science and Risk</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Journal of environmental engineering and science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Uribe, A</au><au>Bishop, Paul L</au><au>Pinto, N G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The influence of pH and temperature changes on the adsorption behavior of organophilic clays used in the stabilization/solidification of hazardous wastes</atitle><jtitle>Journal of environmental engineering and science</jtitle><addtitle>Revue du génie et de la science de l'environnement</addtitle><date>2002-03-01</date><risdate>2002</risdate><volume>1</volume><issue>2</issue><spage>123</spage><epage>133</epage><pages>123-133</pages><issn>1496-256X</issn><issn>1496-2551</issn><eissn>1496-256X</eissn><abstract>The effect of temperature, pH, and Na
+
/Ca
2+
concentration on the adsorptive behavior of organophilic clay used in the solidification/stabilization of hazardous wastes was addressed. The organophilic clay used was montmorillonite type clay modified by cation exchange with a mixed tallow amine as the sorbent. The contaminants used in this work were phenol, 2-chlorophenol, aniline, and chlorobenzene. 2-Butanone (also known as methyl ethyl ketone, MEK) was initially studied, but preliminary work showed that the organophilic clay poorly sorbed it and it was not studied further. A group of isothermal tests were performed to clarify specific sorption behaviors due to temperature effects, high pH, and concentration of the cations Na
+
and Ca
2+
. The adsorption capacity of the organophilic clay decreased as follows: chlorobenzene > 2-chlorophenol > phenol > aniline. Desorption in high pH environments was seen for phenol and 2-chlorophenol. Changes in temperature, rise in the pH, or increases in Na
+
/Ca
2+
concentrations had no effect on the adsorption of either aniline or chlorobenzene.Key words: organophilic clay, adsorption, hazardous wastes, solidification/stabilization, isotherm.</abstract><cop>Ottawa, Canada</cop><pub>NRC Research Press</pub><doi>10.1139/s02-007</doi><tpages>11</tpages></addata></record> |
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| identifier | ISSN: 1496-256X |
| ispartof | Journal of environmental engineering and science, 2002-03, Vol.1 (2), p.123-133 |
| issn | 1496-256X 1496-2551 1496-256X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16138361 |
| source | ICE Virtual Library Journals; Alma/SFX Local Collection |
| subjects | aniline solidification |
| title | The influence of pH and temperature changes on the adsorption behavior of organophilic clays used in the stabilization/solidification of hazardous wastes |
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