Adsorption selectivity of heavy metals by Na-clinoptilolite in aqueous solutions
Adsorption selectivity of heavy metals by Na-clinoptilolite in aqueous solutions
复制标题
斜发沸石钠对水溶液中重金属的吸附选择性
DOI:
10.1007/s10450-019-00081-x
复制
发表时间:
2019-05
期刊:
影响因子:
--
通讯作者:
Li Hang
中科院分区:
文献类型:
--
作者:
Liu Xinmin;Tian Rui;Ding Wuquan;He Yunhua;Li Hang
Preferential adsorption is important to classification removal of heavy metals in wastewaters. In the present study, the adsorption forces of heavy metal cationsM2+(Pb2+, Zn2+, Cd2+and Cu2+) onto the Na+-clinoptilolite were analyzed. The selectivity sequence of heavy metal cations was given as Pb2+> Zn2+> Cd2+> Cu2+. The selectivity coefficientbetweenM2+and Na+on the natural zeolite decreased with increasing ion strength, which depends on the effects of hydration volume (steric) and electron configuration of cations (coordination and polarization). The contributions of main factors resulting in the Hofmeister series on porous zeolite were: the ionic steric effects > coordination > non-classical polarization. The interactions between Na+and zeolite is relatively weak, the electric field near zeolite surface is strong in Na+system, and the electron configurations of heavy metals are significantly enhanced by the strong electric field using Na-zeolite. Generally, the zeolite can be pretreated by ions with weak polarization, which is helpful to increase the contributions of coordination and polarization because of the strong electric field at the zeolite/water interface in these ionic solutions, and then improve the removal efficiency of heavy metal cations in wastewaters or soils using zeolite.
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影响因子:
3.2
作者:
SHANNON, RD
通讯作者:
SHANNON, RD
影响因子:
12.8
作者:
Alvarez-Ayuso, E;García-Sánchez, A;Querol, X
通讯作者:
Querol, X
DOI:
10.4236/jwarp.2011.310086
发表时间:
2011-10
期刊:
Journal of Water Resource and Protection
影响因子:
--
作者:
Abdul M. Ziyath;Parvez Mahbub;A. Goonetilleke;M. Adebajo;S. Kokot;A. Oloyede
通讯作者:
Abdul M. Ziyath;Parvez Mahbub;A. Goonetilleke;M. Adebajo;S. Kokot;A. Oloyede
影响因子:
2.9
作者:
Xinmin Liu;Wuquan Ding;R. Tian;Wei Du;Hang Li
通讯作者:
Xinmin Liu;Wuquan Ding;R. Tian;Wei Du;Hang Li
DOI:
10.1073/pnas.12.8.524
发表时间:
1926-08
影响因子:
11.1
作者:
T. Webb
通讯作者:
T. Webb