Abstract:Batch experiments of equilibrium adsorption were carried out to investigate the characteristics of phosphorus from different grain sizes sediment in Western Liao River. The results indicated that phosphorus sorption characteristics of different grain size sediment conformed with the Freundlich and Langmuir isotherm. Clay and silt adorption capacity had greater numbers relatively, and values were 3791.12mg/kg and 2323.33mg/kg respectively, which were equivalent to 6.68 and 4.09 times of coarse sand. Besides, phosphorus from clay and silt adsorption was an important part of the sediment phosphorus cycling, entrance flux were 3791.12mg/kg and 2323.33mg/kg adsorbed phosphorus per kilogram suspend silt respectively, which carried by wash load from Western Liao River to the sea. Furthermore, the proportion of wash load sediment in total phosphorus adsorption was 28.30%. In addition, the study results indicated there was a high correlation between normalized partition coefficient and loosely combined humus. Otherwise, phosphorus sorption capacity had a high correlation with stably combined humus. There might be micro-hole filling sorption mechanism on aggregate structure formed by stably and tightly combined humus.
王而力, 王嗣淇. 西辽河不同粒级沉积物对磷的吸附特征[J]. 中国环境科学, 2012, 32(6): 1054-1061.
WANG 而Li, WANG Si-Qi. Adorption characteristics of phosphorus from different grain sizes sediment in western liao river. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(6): 1054-1061.