Adsorption/desorption in a new Zn(II)-TiO2 adsorption system was investigated at different particle concentrations (C-p). TEM, SEM and XRD analyses revealed that the TiO2 particles were an aggregation of nano-sized (approximately 10 nm) pure anatase-type TiO2. Adsorption experiments were carried out with particle concentrations of 100, 400 and 1000 mg/L, and their adsorption isotherms were found to decline successively, showing an obvious C-P effect. Desorption experiments indicated that adsorption in this system was irreversible, and the irreversibility increased with increasing C-P. These phenomena could be explained by the MEA (metastable equilibrium adsorption) theory and the C-P effect could be modeled well with an MEA-Freundlich-type CP effect isotherm equation. This study may help understand environmental behavior of contaminants on ultrafine natural particles.
%0 Journal Article
%1 Yang2007a
%A Yang, Y. H.
%A Chen, H.
%A Pan, G.
%D 2007
%J Journal Of Environmental Sciences-China
%K nanoparticles tio2
%P 1442--1445
%T Particle concentration effect in adsorption/desorption of Zn(II) on anatase type nano TiO2
%V 19
%X Adsorption/desorption in a new Zn(II)-TiO2 adsorption system was investigated at different particle concentrations (C-p). TEM, SEM and XRD analyses revealed that the TiO2 particles were an aggregation of nano-sized (approximately 10 nm) pure anatase-type TiO2. Adsorption experiments were carried out with particle concentrations of 100, 400 and 1000 mg/L, and their adsorption isotherms were found to decline successively, showing an obvious C-P effect. Desorption experiments indicated that adsorption in this system was irreversible, and the irreversibility increased with increasing C-P. These phenomena could be explained by the MEA (metastable equilibrium adsorption) theory and the C-P effect could be modeled well with an MEA-Freundlich-type CP effect isotherm equation. This study may help understand environmental behavior of contaminants on ultrafine natural particles.
@article{Yang2007a,
abstract = {Adsorption/desorption in a new Zn(II)-TiO2 adsorption system was investigated at different particle concentrations (C-p). TEM, SEM and XRD analyses revealed that the TiO2 particles were an aggregation of nano-sized (approximately 10 nm) pure anatase-type TiO2. Adsorption experiments were carried out with particle concentrations of 100, 400 and 1000 mg/L, and their adsorption isotherms were found to decline successively, showing an obvious C-P effect. Desorption experiments indicated that adsorption in this system was irreversible, and the irreversibility increased with increasing C-P. These phenomena could be explained by the MEA (metastable equilibrium adsorption) theory and the C-P effect could be modeled well with an MEA-Freundlich-type CP effect isotherm equation. This study may help understand environmental behavior of contaminants on ultrafine natural particles. },
added-at = {2011-10-01T01:43:18.000+0200},
ap = {ISSN 1001-0742},
author = {Yang, Y. H. and Chen, H. and Pan, G.},
biburl = {https://www.bibsonomy.org/bibtex/20adc237c4965ee622ca0f575f7118d71/afcallender},
groups = {public},
interhash = {a5e68e281801c5a552c4f1ad2cb18418},
intrahash = {0adc237c4965ee622ca0f575f7118d71},
journal = {Journal Of Environmental Sciences-China},
keywords = {nanoparticles tio2},
pages = {1442--1445},
tc = {0},
timestamp = {2011-10-12T20:52:13.000+0200},
title = {Particle concentration effect in adsorption/desorption of Zn(II) on anatase type nano TiO2},
username = {afcallender},
ut = {WOS:000252292300006},
volume = 19,
year = 2007
}