Title :
Study on transportation ability and adsorption model for NH4+ in Tianjin shallow porous aquifer medium
Author :
Li, Duo ; Zhou, Yahong ; Fu, Xiaogang ; Gao, Aifang
Author_Institution :
Econ., Shijiazhuang Univ., Shijiazhuang, China
Abstract :
The distribution concentration of NH4+ in the groundwater of Tianjin decreases from the shallow to deep. The content and distribution concentration features of NH4+ in different aquifers are similar to each other; however, it is higher in the south. After studying the transportation features and adsorption model for seven kinds of typical soil sample, the CEC (Cation Exchange Capacity) of these samples were determined. Finally, the research shows that adsorption mode of NH4+ for all sample soil meets Longmuir isothermal adsorption equation. Soil-column experiment results used to determine the hysteresis of NH4+ in soil samples and a one-dimensional transportation model have been built up for soil.
Keywords :
adsorption; geochemistry; groundwater; soil; 1D transportation model; China; Longmuir isothermal adsorption equation; NH4+; Tianjin shallow porous aquifer medium; adsorption mode; adsorption model; cation exchange capacity; distribution concentration; groundwater; soil sample; soil-column experiment; transportation ability; transportation features; Analytical models; Hysteresis; Isothermal processes; Mathematical model; Soil; Transportation; Water pollution; Adsorption model and transportation model; CEC; NH4+;
Conference_Titel :
Water Resource and Environmental Protection (ISWREP), 2011 International Symposium on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-339-1
DOI :
10.1109/ISWREP.2011.5892952
