STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS

The removal of 4-Nitrophenol (4-NP) from aqueous media by adsorption is studied in a batch system using different porous materials: activated carbon, zirconia, alumina, sepiolite, natural zeolite and 13X zeolite. Depending on their adsorption capacities, the best adsorbent was chosen to be impregnat...

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Autores principales:	MATUS,C, CAMÚ,E, VILLARROEL,M, OJEDA,J, BAEZA,P
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2016
Materias:	Adsorption 4-Nitrophenol supports π-complexation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200010
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spelling	oai:scielo:S0717-970720160002000102016-09-14STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALSMATUS,CCAMÚ,EVILLARROEL,MOJEDA,JBAEZA,P Adsorption 4-Nitrophenol supports π-complexation The removal of 4-Nitrophenol (4-NP) from aqueous media by adsorption is studied in a batch system using different porous materials: activated carbon, zirconia, alumina, sepiolite, natural zeolite and 13X zeolite. Depending on their adsorption capacities, the best adsorbent was chosen to be impregnated with different levels of nickel (Ni) in order to study the adsorption by π-complexation in batch and continuous systems. The samples of Ni(x)/support (x= 2, 4, 6%) were prepared by wet impregnation and were characterised using the same method as with all the materials, by N2 adsorption-desorption using the BET method, surface acidity and Z potential measurements by electrophoretic migration. The samples were measured in a UV-Vis electrophotometer at a wavelength of 318 nm, while the adsorption capacity of the material in the batch system was determined by calculating the difference in concentration once the adsorbent became saturated after an initial concentration of ~20 ppm, and in the continuous system this was done by integrating the area under the adsorption curve. The results suggest that adsorption capacity depends on the specific BET area, apparent acid strength and the IEP of each support, and that it varies with the addition of Ni.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.61 n.2 20162016-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200010en10.4067/S0717-97072016000200010
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Adsorption 4-Nitrophenol supports π-complexation
spellingShingle	Adsorption 4-Nitrophenol supports π-complexation MATUS,C CAMÚ,E VILLARROEL,M OJEDA,J BAEZA,P STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS
description	The removal of 4-Nitrophenol (4-NP) from aqueous media by adsorption is studied in a batch system using different porous materials: activated carbon, zirconia, alumina, sepiolite, natural zeolite and 13X zeolite. Depending on their adsorption capacities, the best adsorbent was chosen to be impregnated with different levels of nickel (Ni) in order to study the adsorption by π-complexation in batch and continuous systems. The samples of Ni(x)/support (x= 2, 4, 6%) were prepared by wet impregnation and were characterised using the same method as with all the materials, by N2 adsorption-desorption using the BET method, surface acidity and Z potential measurements by electrophoretic migration. The samples were measured in a UV-Vis electrophotometer at a wavelength of 318 nm, while the adsorption capacity of the material in the batch system was determined by calculating the difference in concentration once the adsorbent became saturated after an initial concentration of ~20 ppm, and in the continuous system this was done by integrating the area under the adsorption curve. The results suggest that adsorption capacity depends on the specific BET area, apparent acid strength and the IEP of each support, and that it varies with the addition of Ni.
author	MATUS,C CAMÚ,E VILLARROEL,M OJEDA,J BAEZA,P
author_facet	MATUS,C CAMÚ,E VILLARROEL,M OJEDA,J BAEZA,P
author_sort	MATUS,C
title	STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS
title_short	STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS
title_full	STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS
title_fullStr	STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS
title_full_unstemmed	STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS
title_sort	study of the removal of 4-nitrophenol from aqueous media by adsorption on different materials
publisher	Sociedad Chilena de Química
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000200010
work_keys_str_mv	AT matusc studyoftheremovalof4nitrophenolfromaqueousmediabyadsorptionondifferentmaterials AT camue studyoftheremovalof4nitrophenolfromaqueousmediabyadsorptionondifferentmaterials AT villarroelm studyoftheremovalof4nitrophenolfromaqueousmediabyadsorptionondifferentmaterials AT ojedaj studyoftheremovalof4nitrophenolfromaqueousmediabyadsorptionondifferentmaterials AT baezap studyoftheremovalof4nitrophenolfromaqueousmediabyadsorptionondifferentmaterials
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STUDY OF THE REMOVAL OF 4-NITROPHENOL FROM AQUEOUS MEDIA BY ADSORPTION ON DIFFERENT MATERIALS

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