REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN

ABSTRACT This study investigated the efficiency of a strongly basic anion exchange resin for the removal of phthalic acid (also known as orto-phthalic acid) and isophthalic acid in aqueous solutions. Uptake behavior of resin towards phthalic acid and isophthalic acid has been assessed as a function...

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Autores principales: Duran,Merve, Arar,Özgür, Arda,Müserref
Lenguaje:English
Publicado: Sociedad Chilena de Química 2019
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000104399
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spelling oai:scielo:S0717-970720190001043992019-04-11REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESINDuran,MerveArar,ÖzgürArda,Müserref Finex AS510GC Ion exchange Isophthalic acid Phthalic acid Regeneration ABSTRACT This study investigated the efficiency of a strongly basic anion exchange resin for the removal of phthalic acid (also known as orto-phthalic acid) and isophthalic acid in aqueous solutions. Uptake behavior of resin towards phthalic acid and isophthalic acid has been assessed as a function of resin dose, initial solution pH, and temperature. The pseudo-second-order rate equation fitted well kinetic profiles for such sorbates. Phthalic acid and isophthalic acid loading isotherm studies have been performed and experimental data were analyzed by Freundlich, Langmuir and Dubinin–Radusckevich (D-R) equations. The maximum sorption capacity of the resin predicted by the Langmuir model were 397.8 mg g−1 for the phthalic acid and 331.3 mg g−1 for isophthalic acid. The mean free sorption energies through the D-R model suggest that sorption takes place mainly through an ion exchange mechanism. The experimental results illustrated that the sorption of phthalic acid onto anion exchange resin is feasible, spontaneous and exothermic however, sorption of isophthalic acid is endothermic. The successful phthalic acid-loaded resin regeneration in a batch system revealed the higher efficiency of the 2.0 M HCl solution compared to 1.0 M HCl and 1.0 M NaOH as desorbing agents. In the case of isophthalic acid-loaded resin, 2.0 M NaCl solution found to be most efficient regenerant.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.64 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000104399en10.4067/s0717-97072019000104399
institution Scielo Chile
collection Scielo Chile
language English
topic Finex AS510GC
Ion exchange
Isophthalic acid
Phthalic acid
Regeneration
spellingShingle Finex AS510GC
Ion exchange
Isophthalic acid
Phthalic acid
Regeneration
Duran,Merve
Arar,Özgür
Arda,Müserref
REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN
description ABSTRACT This study investigated the efficiency of a strongly basic anion exchange resin for the removal of phthalic acid (also known as orto-phthalic acid) and isophthalic acid in aqueous solutions. Uptake behavior of resin towards phthalic acid and isophthalic acid has been assessed as a function of resin dose, initial solution pH, and temperature. The pseudo-second-order rate equation fitted well kinetic profiles for such sorbates. Phthalic acid and isophthalic acid loading isotherm studies have been performed and experimental data were analyzed by Freundlich, Langmuir and Dubinin–Radusckevich (D-R) equations. The maximum sorption capacity of the resin predicted by the Langmuir model were 397.8 mg g−1 for the phthalic acid and 331.3 mg g−1 for isophthalic acid. The mean free sorption energies through the D-R model suggest that sorption takes place mainly through an ion exchange mechanism. The experimental results illustrated that the sorption of phthalic acid onto anion exchange resin is feasible, spontaneous and exothermic however, sorption of isophthalic acid is endothermic. The successful phthalic acid-loaded resin regeneration in a batch system revealed the higher efficiency of the 2.0 M HCl solution compared to 1.0 M HCl and 1.0 M NaOH as desorbing agents. In the case of isophthalic acid-loaded resin, 2.0 M NaCl solution found to be most efficient regenerant.
author Duran,Merve
Arar,Özgür
Arda,Müserref
author_facet Duran,Merve
Arar,Özgür
Arda,Müserref
author_sort Duran,Merve
title REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN
title_short REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN
title_full REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN
title_fullStr REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN
title_full_unstemmed REMOVAL OF PHTHALIC ACID AND ISOPHTHALIC ACID FROM AQUEOUS SOLUTION BY ANION EXCHANGE RESIN
title_sort removal of phthalic acid and isophthalic acid from aqueous solution by anion exchange resin
publisher Sociedad Chilena de Química
publishDate 2019
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000104399
work_keys_str_mv AT duranmerve removalofphthalicacidandisophthalicacidfromaqueoussolutionbyanionexchangeresin
AT ararozgur removalofphthalicacidandisophthalicacidfromaqueoussolutionbyanionexchangeresin
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