Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes
The particle size of sediment is one of the main factors that influence the phosphorus physical adsorption on sediment. In order to eliminate the effect of other components of sediment on the phosphorus physical adsorption the sediment mineral matrices were obtained by removing inorganic matter meta...
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| Format: | Article |
| Language: | English |
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Elsevier
2013-07-01
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| Series: | Water Science and Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674237015302428 |
| _version_ | 1811259341091635200 |
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| author | Yang Xiao Xiao-lian Zhu Hao-ke Cheng Kai-jie Li Qi Lu Dong-fang Liang |
| author_facet | Yang Xiao Xiao-lian Zhu Hao-ke Cheng Kai-jie Li Qi Lu Dong-fang Liang |
| author_sort | Yang Xiao |
| collection | DOAJ |
| description | The particle size of sediment is one of the main factors that influence the phosphorus physical adsorption on sediment. In order to eliminate the effect of other components of sediment on the phosphorus physical adsorption the sediment mineral matrices were obtained by removing inorganic matter metal oxides, and organic matter from natural sediments, which were collected from the Nantong reach of the Yangtze River. The results show that an exponential relationship exists between the median particle size (D50) and specific surface area (Sg) of the sediment mineral matrices, and the fine sediment mineral matrix sample has a larger specific surface area and pore volume than the coarse sediment particles. The kinetic equations were used to describe the phosphorus adsorption process of the sediment mineral matrices, including the Elovich equation, quasi-first-order adsorption kinetic equation, and quasi-second-order adsorption kinetic equation. The results show that the quasi-second-order adsorption kinetic equation has the best fitting effect. Using the mass conservation and Langmuir adsorption kinetic equations, a formula was deduced to calculate the equilibrium adsorption capacity of the sediment mineral matrices. The results of this study show that the phosphorus adsorption capacity decreases with the increase of D50, indicating that the specific surface area and pore volume are the main factors in determining the phosphorus adsorption capacity of the sediment mineral matrices. This study will help understand the important role of sediment in the transformation of phosphorus in aquatic environments. |
| first_indexed | 2024-04-12T18:30:01Z |
| format | Article |
| id | doaj.art-29dab1170b29404cab90efd672c77777 |
| institution | Directory Open Access Journal |
| issn | 1674-2370 |
| language | English |
| last_indexed | 2024-04-12T18:30:01Z |
| publishDate | 2013-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Science and Engineering |
| spelling | doaj.art-29dab1170b29404cab90efd672c777772022-12-22T03:21:07ZengElsevierWater Science and Engineering1674-23702013-07-016326227110.3882/j.issn.1674-2370.2013.03.003Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizesYang Xiao0Xiao-lian Zhu1Hao-ke Cheng2Kai-jie Li3Qi Lu4Dong-fang Liang5State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P.R. ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P.R. ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P.R. ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P.R. ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P.R. ChinaDepartment of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200240, P.R. ChinaThe particle size of sediment is one of the main factors that influence the phosphorus physical adsorption on sediment. In order to eliminate the effect of other components of sediment on the phosphorus physical adsorption the sediment mineral matrices were obtained by removing inorganic matter metal oxides, and organic matter from natural sediments, which were collected from the Nantong reach of the Yangtze River. The results show that an exponential relationship exists between the median particle size (D50) and specific surface area (Sg) of the sediment mineral matrices, and the fine sediment mineral matrix sample has a larger specific surface area and pore volume than the coarse sediment particles. The kinetic equations were used to describe the phosphorus adsorption process of the sediment mineral matrices, including the Elovich equation, quasi-first-order adsorption kinetic equation, and quasi-second-order adsorption kinetic equation. The results show that the quasi-second-order adsorption kinetic equation has the best fitting effect. Using the mass conservation and Langmuir adsorption kinetic equations, a formula was deduced to calculate the equilibrium adsorption capacity of the sediment mineral matrices. The results of this study show that the phosphorus adsorption capacity decreases with the increase of D50, indicating that the specific surface area and pore volume are the main factors in determining the phosphorus adsorption capacity of the sediment mineral matrices. This study will help understand the important role of sediment in the transformation of phosphorus in aquatic environments.http://www.sciencedirect.com/science/article/pii/S1674237015302428sediment mineral matrixparticle sizespecific surface areapore volumephosphorus adsorption |
| spellingShingle | Yang Xiao Xiao-lian Zhu Hao-ke Cheng Kai-jie Li Qi Lu Dong-fang Liang Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes Water Science and Engineering sediment mineral matrix particle size specific surface area pore volume phosphorus adsorption |
| title | Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes |
| title_full | Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes |
| title_fullStr | Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes |
| title_full_unstemmed | Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes |
| title_short | Characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes |
| title_sort | characteristics of phosphorus adsorption by sediment mineral matrices with different particle sizes |
| topic | sediment mineral matrix particle size specific surface area pore volume phosphorus adsorption |
| url | http://www.sciencedirect.com/science/article/pii/S1674237015302428 |
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