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| Adsorption of 17β-E2 on Different Components of Sediments |
| Received:February 02, 2015 |
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| KeyWord:17β-E2;sediment;organic matter;iron and manganese oxides;adsorption |
| Author Name | Affiliation | E-mail | | LI Ru-feng | Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China | | | LIN Jian-de | Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China
School of Civil and Traffic Engineering, North China University of Water Resource and Electric Power, Zhengzhou 450011, China | | | FENG Cheng-hong | Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China | fengchenghong@bnu.edu.cn | | SHAO Jian | School of Civil and Traffic Engineering, North China University of Water Resource and Electric Power, Zhengzhou 450011, China | | | LI Yan-xia | Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China | | | LIU Jing-ling | Key Laboratory for Water and Sediment Science of Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, China | |
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| Abstract: |
| 17β-E2 has recently become research focus because of its low concentrations, strong hazard and widespread distribution in the environment. However, its environmental behaviors are still unclear. The present study investigated the adsorption behaviors of 17β-E2 on different composition of sediments(e.g., organic matter, iron and manganese oxides, and clay minerals) from the Yangtze Estuary. The effects of pH and salinity on the adsorption capacity of 17β-E2 were also examined. The specific surface area of sediments was closely related to organic matter and iron and manganese oxides. Adsorption of 17β-E2 simultaneously occurred on the surface and at the interlayer of the sediments. The adsorption capacity sharply increased with adsorption time until adsorption equilibrium. The adsorption isotherms were fitted well with different adsorption equilibrium models. Organic matter delayed the adsorption process, while iron and manganese oxides exhibited little impact on the adsorption. Overall, the adsorption capacity of 17β-E2 on the sediments decreased with pH rise, but increased with salinity elevation. |
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