Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)

Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)

Eight sediment samples from Maracaibo's estuary (Lago de Maracaibo) were assessed for their capacity to sorb different amounts of added phosphate, the results were studied according with the Langmuir, Freundlich and Temkin adsorption models. The experimental information adjusted Freundlich isotherm in the whole range of concentration used (0-250 ppm). Langmuir model, although convenient at lower concentration, desviate from linearity at higher P level used, presumably due to inter actions occurring among the highly charged orthophosphate already sorbed Temkin's isotherm do not describe as well the interrelationships between surface-solution as previously found in agricultural soils. The time of equilibrium was found to be dependent on reactive surfaces, particularly those related to amorphous forms of aluminium.

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Main Authors: 87625 López-Hernández, D., 113628 Rotondo, F., 77719 Herrera, T.
Format: biblioteca
Language:spa
Published: San José, Costa Rica Instituto Interamericano de Cooperación para la Agricultura (IICA) (Jul
Subjects:FOSFORO, SEDIMENTO, ESTUARIOS, ADSORCIÓN,
Online Access:https://repositorio.catie.ac.cr/handle/11554/11934
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spelling KOHA-OAI-BVE:1200952022-08-29T21:40:28ZIsotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo) 87625 López-Hernández, D. 113628 Rotondo, F. 77719 Herrera, T. San José, Costa Rica Instituto Interamericano de Cooperación para la Agricultura (IICA)(Jul-Set 1984)spahtmlEight sediment samples from Maracaibo's estuary (Lago de Maracaibo) were assessed for their capacity to sorb different amounts of added phosphate, the results were studied according with the Langmuir, Freundlich and Temkin adsorption models. The experimental information adjusted Freundlich isotherm in the whole range of concentration used (0-250 ppm). Langmuir model, although convenient at lower concentration, desviate from linearity at higher P level used, presumably due to inter actions occurring among the highly charged orthophosphate already sorbed Temkin's isotherm do not describe as well the interrelationships between surface-solution as previously found in agricultural soils. The time of equilibrium was found to be dependent on reactive surfaces, particularly those related to amorphous forms of aluminium.Ocho muestras de sedimentos del estuario de Maracaibo (Lago de Maracaibo) fueron evaluadas por su capacidad de sorber diferentes cantidades de fosfato añadido, los resultados fueron estudiados de acuerdo con los modelos de adsorción de Langmuir, Freundlich y Temkin. La información experimental ajustó la isoterma de Freundlich en todo el rango de concentración utilizado (0-250 ppm). El modelo de Langmuir, aunque es conveniente a bajas concentraciones, se desvía de la linealidad a los niveles de P más altos utilizados, presumiblemente debido a las interacciones que ocurren entre el ortofosfato altamente cargado ya sorbido La isoterma de Temkin no describe tan bien las interrelaciones entre la superficie-solución como las encontradas previamente en los suelos agrícolas. Se encontró que el tiempo de equilibrio dependía de las superficies reactivas, en particular las relacionadas con las formas amorfas del aluminio.Eight sediment samples from Maracaibo's estuary (Lago de Maracaibo) were assessed for their capacity to sorb different amounts of added phosphate, the results were studied according with the Langmuir, Freundlich and Temkin adsorption models. The experimental information adjusted Freundlich isotherm in the whole range of concentration used (0-250 ppm). Langmuir model, although convenient at lower concentration, desviate from linearity at higher P level used, presumably due to inter actions occurring among the highly charged orthophosphate already sorbed Temkin's isotherm do not describe as well the interrelationships between surface-solution as previously found in agricultural soils. The time of equilibrium was found to be dependent on reactive surfaces, particularly those related to amorphous forms of aluminium.Ocho muestras de sedimentos del estuario de Maracaibo (Lago de Maracaibo) fueron evaluadas por su capacidad de sorber diferentes cantidades de fosfato añadido, los resultados fueron estudiados de acuerdo con los modelos de adsorción de Langmuir, Freundlich y Temkin. La información experimental ajustó la isoterma de Freundlich en todo el rango de concentración utilizado (0-250 ppm). El modelo de Langmuir, aunque es conveniente a bajas concentraciones, se desvía de la linealidad a los niveles de P más altos utilizados, presumiblemente debido a las interacciones que ocurren entre el ortofosfato altamente cargado ya sorbido La isoterma de Temkin no describe tan bien las interrelaciones entre la superficie-solución como las encontradas previamente en los suelos agrícolas. Se encontró que el tiempo de equilibrio dependía de las superficies reactivas, en particular las relacionadas con las formas amorfas del aluminio.FOSFOROSEDIMENTOESTUARIOSADSORCIÓNTurrialba (IICA)https://repositorio.catie.ac.cr/handle/11554/11934
institution IICA
collection Koha
country Costa Rica
countrycode CR
component Bibliográfico
access En linea
En linea
databasecode cat-sibiica
tag biblioteca
region America Central
libraryname Sistema de Bibliotecas IICA/CATIE
language spa
topic FOSFORO
SEDIMENTO
ESTUARIOS
ADSORCIÓN
FOSFORO
SEDIMENTO
ESTUARIOS
ADSORCIÓN
spellingShingle FOSFORO
SEDIMENTO
ESTUARIOS
ADSORCIÓN
FOSFORO
SEDIMENTO
ESTUARIOS
ADSORCIÓN
87625 López-Hernández, D.
113628 Rotondo, F.
77719 Herrera, T.
Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)
description Eight sediment samples from Maracaibo's estuary (Lago de Maracaibo) were assessed for their capacity to sorb different amounts of added phosphate, the results were studied according with the Langmuir, Freundlich and Temkin adsorption models. The experimental information adjusted Freundlich isotherm in the whole range of concentration used (0-250 ppm). Langmuir model, although convenient at lower concentration, desviate from linearity at higher P level used, presumably due to inter actions occurring among the highly charged orthophosphate already sorbed Temkin's isotherm do not describe as well the interrelationships between surface-solution as previously found in agricultural soils. The time of equilibrium was found to be dependent on reactive surfaces, particularly those related to amorphous forms of aluminium.
format
topic_facet FOSFORO
SEDIMENTO
ESTUARIOS
ADSORCIÓN
author 87625 López-Hernández, D.
113628 Rotondo, F.
77719 Herrera, T.
author_facet 87625 López-Hernández, D.
113628 Rotondo, F.
77719 Herrera, T.
author_sort 87625 López-Hernández, D.
title Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)
title_short Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)
title_full Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)
title_fullStr Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)
title_full_unstemmed Isotermas de adsorción de fósforo en sedimentos del estuario de Maracaibo (Lago de Maracaibo)
title_sort isotermas de adsorción de fósforo en sedimentos del estuario de maracaibo (lago de maracaibo)
publisher San José, Costa Rica Instituto Interamericano de Cooperación para la Agricultura (IICA)
publishDate (Jul
url https://repositorio.catie.ac.cr/handle/11554/11934
work_keys_str_mv AT 87625lopezhernandezd isotermasdeadsorciondefosforoensedimentosdelestuariodemaracaibolagodemaracaibo
AT 113628rotondof isotermasdeadsorciondefosforoensedimentosdelestuariodemaracaibolagodemaracaibo
AT 77719herrerat isotermasdeadsorciondefosforoensedimentosdelestuariodemaracaibolagodemaracaibo
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