| CONCURRENT SORPTION OF HEAVY METAL POLLUTANTS OF SEDIMENT OF DIFFERENT GRAIN SIZES |
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| 作者姓名： | Huang Sui-liangState Key Joint Laboratory of Environmental Simulation and Pollution Control Laboratoryof Water Environment Simulation Beijing Normal University Beijing P. R. ChinaWan Zhao-huiChina Institute of Water Conservancy and Hydroelectric |
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| 作者单位： | Huang Sui-liangState Key Joint Laboratory of Environmental Simulation and Pollution Control，Laboratoryof Water Environment Simulation，Beijing Normal University，Beijing 100875，P. R. ChinaWan Zhao-huiChina Institute of Water Conservancy and Hydroelectric |
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| 基金项目： | Natural Science Foundation of China，the Post－doctoral Science Foundation of China and the Youth Teacher’ Foudation Beijing Normal University． |
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| 摘 要： | Generally, sediment in natural rivers is non-uniform, and sorption capacities of different grain sizes vary greatly. In order to quantitatively describe sorption of heavy metal pollutant by sediment in natural rivers, the concurrent sorption by sediment of different grain sizes should be studied. By combining systematic laboratory experiments and theoretical analysis the concurrent equilibrium sorption model and the concurrent sorption dynamic model by sediment of different grain sizes have been set up. Both of them indicate that there is no competition or interference among different grain sizes, its sorption content of unit weight of sediment is the sum of the sorption contents of each grain sizes , and the content of each grain size in non-uniform sediment. Furthermore, formulas for determining characteristic parameters ( b and k) in the Langmuir sorption isotherm for non-uniform sediment are deduced as follows:
These can be used as a tool for predicting the sorption content of non-uniform sediment
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CONCURRENT SORPTION OF HEAVY METAL POLLUTANTS OF SEDIMENT OF DIFFERENT GRAIN SIZES |
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| Huang Sui-liangState Key Joint Laboratory of Environmental Simulation and Pollution Control,Laboratoryof Water Environment Simulation,Beijing Normal University,Beijing ,P. R. ChinaWan Zhao-huiChina Institute of Water Conservancy and Hydroelectric.CONCURRENT SORPTION OF HEAVY METAL POLLUTANTS OF SEDIMENT OF DIFFERENT GRAIN SIZES[J].Journal of Hydrodynamics,1997(2). |
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| Authors: | Huang Sui-liangState Key Joint Laboratory of Environmental Simulation and Pollution Control Laboratoryof Water Environment Simulation Beijing Normal University Beijing P R ChinaWan Zhao-huiChina Institute of Water Conservancy and Hydroelectric |
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| Affiliation: | Huang Sui-liangState Key Joint Laboratory of Environmental Simulation and Pollution Control,Laboratoryof Water Environment Simulation,Beijing Normal University,Beijing 100875,P. R. ChinaWan Zhao-huiChina Institute of Water Conservancy and Hydroelectric |
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| Abstract: | Generally, sediment in natural rivers is non-uniform, and sorption capacities of different grain sizes vary greatly. In order to quantitatively describe sorption of heavy metal pollutant by sediment in natural rivers, the concurrent sorption by sediment of different grain sizes should be studied. By combining systematic laboratory experiments and theoretical analysis the concurrent equilibrium sorption model and the concurrent sorption dynamic model by sediment of different grain sizes have been set up. Both of them indicate that there is no competition or interference among different grain sizes, its sorption content of unit weight of sediment is the sum of the sorption contents of each grain sizes , and the content of each grain size in non-uniform sediment. Furthermore, formulas for determining characteristic parameters ( b and k) in the Langmuir sorption isotherm for non-uniform sediment are deduced as follows:These can be used as a tool for predicting the sorption content of non-uniform sediment in natural rivers. |
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| Keywords: | sediment concurrent sorption model grain sizes |
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