General purpose adsorption isotherms

The fitting of adsorption isotherm equations to experimental data is often an important aspect of data analysis. If the Langmuir and Freundlich isotherms are used, then consideration must be given to the proper weighting of the observations. Preferably nonlinear regression (nonlinear least squares)...

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Veröffentlicht in:Environ. Sci. Technol.; (United States) 1986-09, Vol.20 (9), p.895-904
1. Verfasser: Kinniburgh, David G
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description The fitting of adsorption isotherm equations to experimental data is often an important aspect of data analysis. If the Langmuir and Freundlich isotherms are used, then consideration must be given to the proper weighting of the observations. Preferably nonlinear regression (nonlinear least squares) should be used since this enables these isotherms to be fitted directly and also enables other isotherms to be tested with little extra effort. Isotherms described her which are likely to show a wide range of applicability include the Toth, modified Dubinin-Radushkevich, and multisite Langmuir isotherms. These can also describe competitive adsorption (binary exchange) reactions and are well suited for heterogeneous exchangers such as soils and sediments. Specific examples discussed are the adsorption of P and K by soils, Na-Cu exchange by montmorillonite, and Zn adsorption by ferrihydrite.
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Interaction in the soil ; CATIONS ; CHARGED PARTICLES ; CHEMICAL REACTIONS ; CHEMISORPTION ; CINC ; CLAYS ; COBRE ; COPPER ; COPPER COMPOUNDS ; CUIVRE ; DATA ; DATA ANALYSIS ; ELEMENTS ; ENVIRONMENTAL SCIENCES ; Exact sciences and technology ; EXPERIMENTAL DATA ; FERRIHYDRITE ; FOSFORO ; INFORMATION ; INORGANIC ION EXCHANGERS ; ION EXCHANGE ; ION EXCHANGE MATERIALS ; IONS ; IRON COMPOUNDS ; ISOTHERMS ; MATERIALS ; MINERALES ; MINERALS ; MINERAUX ; MODELE ; MODELOS ; MONTMORILLONITE ; NONMETALS ; NUMERICAL DATA ; PHOSPHORE ; PHOSPHORUS ; Pollution ; POTASIO ; POTASSIUM ; POTASSIUM COMPOUNDS ; SEDIMENTS ; SEPARATION PROCESSES ; SODIO ; SODIUM ; SODIUM COMPOUNDS ; Soil and sediments pollution ; SOILS ; SOLS ; SORPTION ; SUELOS ; TRANSITION ELEMENT COMPOUNDS 510100 -- Environment, Terrestrial-- Basic Studies-- (-1989) ; USES ; ZINC ; ZINC COMPOUNDS</subject><ispartof>Environ. Sci. 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Sci. Technol.; (United States)</title><addtitle>Environ. Sci. Technol</addtitle><description>The fitting of adsorption isotherm equations to experimental data is often an important aspect of data analysis. If the Langmuir and Freundlich isotherms are used, then consideration must be given to the proper weighting of the observations. Preferably nonlinear regression (nonlinear least squares) should be used since this enables these isotherms to be fitted directly and also enables other isotherms to be tested with little extra effort. Isotherms described her which are likely to show a wide range of applicability include the Toth, modified Dubinin-Radushkevich, and multisite Langmuir isotherms. These can also describe competitive adsorption (binary exchange) reactions and are well suited for heterogeneous exchangers such as soils and sediments. Specific examples discussed are the adsorption of P and K by soils, Na-Cu exchange by montmorillonite, and Zn adsorption by ferrihydrite.</description><subject>ADSORCION</subject><subject>ADSORPTION</subject><subject>ADSORPTION ISOTHERMS</subject><subject>ALKALI METAL COMPOUNDS</subject><subject>Applied sciences</subject><subject>Biological and physicochemical properties of pollutants. Interaction in the soil</subject><subject>CATIONS</subject><subject>CHARGED PARTICLES</subject><subject>CHEMICAL REACTIONS</subject><subject>CHEMISORPTION</subject><subject>CINC</subject><subject>CLAYS</subject><subject>COBRE</subject><subject>COPPER</subject><subject>COPPER COMPOUNDS</subject><subject>CUIVRE</subject><subject>DATA</subject><subject>DATA ANALYSIS</subject><subject>ELEMENTS</subject><subject>ENVIRONMENTAL SCIENCES</subject><subject>Exact sciences and technology</subject><subject>EXPERIMENTAL DATA</subject><subject>FERRIHYDRITE</subject><subject>FOSFORO</subject><subject>INFORMATION</subject><subject>INORGANIC ION EXCHANGERS</subject><subject>ION EXCHANGE</subject><subject>ION EXCHANGE MATERIALS</subject><subject>IONS</subject><subject>IRON COMPOUNDS</subject><subject>ISOTHERMS</subject><subject>MATERIALS</subject><subject>MINERALES</subject><subject>MINERALS</subject><subject>MINERAUX</subject><subject>MODELE</subject><subject>MODELOS</subject><subject>MONTMORILLONITE</subject><subject>NONMETALS</subject><subject>NUMERICAL DATA</subject><subject>PHOSPHORE</subject><subject>PHOSPHORUS</subject><subject>Pollution</subject><subject>POTASIO</subject><subject>POTASSIUM</subject><subject>POTASSIUM COMPOUNDS</subject><subject>SEDIMENTS</subject><subject>SEPARATION PROCESSES</subject><subject>SODIO</subject><subject>SODIUM</subject><subject>SODIUM COMPOUNDS</subject><subject>Soil and sediments pollution</subject><subject>SOILS</subject><subject>SOLS</subject><subject>SORPTION</subject><subject>SUELOS</subject><subject>TRANSITION ELEMENT COMPOUNDS 510100 -- Environment, Terrestrial-- Basic Studies-- (-1989)</subject><subject>USES</subject><subject>ZINC</subject><subject>ZINC COMPOUNDS</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1986</creationdate><recordtype>article</recordtype><recordid>eNp90U2L1TAUBuAginMdXblzIRcZdCHVfDQ5yVKG-RAuqMyMugunaep07G1qTgv67-3Y69WFuDqQ8_ByeMPYY8FfCS7F60icCy2Qc3uHrYSWvNBWi7tsNb-rwinz-YA9ILrhnEvF7X12IKU0ykq5YkdnsY8Zu_Uw5SFRXGNNKQ9jm_p1S2m8jnlLD9m9BjuKj3bzkF2dnlwenxebd2dvj99sCiyNHAvNGxXAVSABha4w1qI0oCvnNAIoB9wZrq0VEmvrqlBXNdj5IIdVbUTQ6pA9W3ITja2n0I4xXIfU9zGM3hgN0rkZvVjQkNO3KdLoty2F2HXYxzSRdwI0GChv457_V4qyBF2WcoYvFxhyIsqx8UNut5h_eMH9bcf-r45n_XQXO1XbWO_t71JncLQDSAG7JmMfWto7cMrCL1YsrKUxft-vMX_1BhRof_n-wn8w5582yoD_OPsni28wefyS58irCwu8tE79aQUD-Zs05X7-qH-e_xM4saRG</recordid><startdate>19860901</startdate><enddate>19860901</enddate><creator>Kinniburgh, David G</creator><general>American Chemical Society</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TV</scope><scope>C1K</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>19860901</creationdate><title>General purpose adsorption isotherms</title><author>Kinniburgh, David G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a462t-50f3c79b727a15baed14675b995a77397096058812ad89bcdbd783089abd61c53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1986</creationdate><topic>ADSORCION</topic><topic>ADSORPTION</topic><topic>ADSORPTION ISOTHERMS</topic><topic>ALKALI METAL COMPOUNDS</topic><topic>Applied sciences</topic><topic>Biological and physicochemical properties of pollutants. Interaction in the soil</topic><topic>CATIONS</topic><topic>CHARGED PARTICLES</topic><topic>CHEMICAL REACTIONS</topic><topic>CHEMISORPTION</topic><topic>CINC</topic><topic>CLAYS</topic><topic>COBRE</topic><topic>COPPER</topic><topic>COPPER COMPOUNDS</topic><topic>CUIVRE</topic><topic>DATA</topic><topic>DATA ANALYSIS</topic><topic>ELEMENTS</topic><topic>ENVIRONMENTAL SCIENCES</topic><topic>Exact sciences and technology</topic><topic>EXPERIMENTAL DATA</topic><topic>FERRIHYDRITE</topic><topic>FOSFORO</topic><topic>INFORMATION</topic><topic>INORGANIC ION EXCHANGERS</topic><topic>ION EXCHANGE</topic><topic>ION EXCHANGE MATERIALS</topic><topic>IONS</topic><topic>IRON COMPOUNDS</topic><topic>ISOTHERMS</topic><topic>MATERIALS</topic><topic>MINERALES</topic><topic>MINERALS</topic><topic>MINERAUX</topic><topic>MODELE</topic><topic>MODELOS</topic><topic>MONTMORILLONITE</topic><topic>NONMETALS</topic><topic>NUMERICAL DATA</topic><topic>PHOSPHORE</topic><topic>PHOSPHORUS</topic><topic>Pollution</topic><topic>POTASIO</topic><topic>POTASSIUM</topic><topic>POTASSIUM COMPOUNDS</topic><topic>SEDIMENTS</topic><topic>SEPARATION PROCESSES</topic><topic>SODIO</topic><topic>SODIUM</topic><topic>SODIUM COMPOUNDS</topic><topic>Soil and sediments pollution</topic><topic>SOILS</topic><topic>SOLS</topic><topic>SORPTION</topic><topic>SUELOS</topic><topic>TRANSITION ELEMENT COMPOUNDS 510100 -- Environment, Terrestrial-- Basic Studies-- (-1989)</topic><topic>USES</topic><topic>ZINC</topic><topic>ZINC COMPOUNDS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kinniburgh, David G</creatorcontrib><creatorcontrib>British Geological Survey, Wallingford, England</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Environ. Sci. Technol.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kinniburgh, David G</au><aucorp>British Geological Survey, Wallingford, England</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>General purpose adsorption isotherms</atitle><jtitle>Environ. Sci. Technol.; (United States)</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>1986-09-01</date><risdate>1986</risdate><volume>20</volume><issue>9</issue><spage>895</spage><epage>904</epage><pages>895-904</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>The fitting of adsorption isotherm equations to experimental data is often an important aspect of data analysis. If the Langmuir and Freundlich isotherms are used, then consideration must be given to the proper weighting of the observations. Preferably nonlinear regression (nonlinear least squares) should be used since this enables these isotherms to be fitted directly and also enables other isotherms to be tested with little extra effort. Isotherms described her which are likely to show a wide range of applicability include the Toth, modified Dubinin-Radushkevich, and multisite Langmuir isotherms. These can also describe competitive adsorption (binary exchange) reactions and are well suited for heterogeneous exchangers such as soils and sediments. Specific examples discussed are the adsorption of P and K by soils, Na-Cu exchange by montmorillonite, and Zn adsorption by ferrihydrite.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>22263822</pmid><doi>10.1021/es00151a008</doi><tpages>10</tpages></addata></record>
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ispartof Environ. Sci. Technol.; (United States), 1986-09, Vol.20 (9), p.895-904
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subjects ADSORCION
ADSORPTION
ADSORPTION ISOTHERMS
ALKALI METAL COMPOUNDS
Applied sciences
Biological and physicochemical properties of pollutants. Interaction in the soil
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISORPTION
CINC
CLAYS
COBRE
COPPER
COPPER COMPOUNDS
CUIVRE
DATA
DATA ANALYSIS
ELEMENTS
ENVIRONMENTAL SCIENCES
Exact sciences and technology
EXPERIMENTAL DATA
FERRIHYDRITE
FOSFORO
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE
ION EXCHANGE MATERIALS
IONS
IRON COMPOUNDS
ISOTHERMS
MATERIALS
MINERALES
MINERALS
MINERAUX
MODELE
MODELOS
MONTMORILLONITE
NONMETALS
NUMERICAL DATA
PHOSPHORE
PHOSPHORUS
Pollution
POTASIO
POTASSIUM
POTASSIUM COMPOUNDS
SEDIMENTS
SEPARATION PROCESSES
SODIO
SODIUM
SODIUM COMPOUNDS
Soil and sediments pollution
SOILS
SOLS
SORPTION
SUELOS
TRANSITION ELEMENT COMPOUNDS 510100 -- Environment, Terrestrial-- Basic Studies-- (-1989)
USES
ZINC
ZINC COMPOUNDS
title General purpose adsorption isotherms
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