| Thermodynamic Analysis of Heavy Metals Biosorption by Two Macroalgae |
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| 作者姓名： | 陈丽丹 王宪 徐鲁荣 钱爱红 |
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| 作者单位： | CollegeofOceanogrophyandEnvironmentalScience,XiamenUniversity,Xiamen361005,FujianChina |
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| 摘 要： | The thermodynamic process of two macroalgae, Sargassum fusiforme and Lamin aria japonica, absorbing heavy, metal ions Cu^2 , Pb^2 , Cd^2 and Ni^2 . has been studied. The result indicates that the absorption isotherms of these two macroalgae clearly accord with the Landmuir adsorption model. The absorptive processes of S. fusiforme and L. japonica for Cu^2 are endothermal, and at 35℃, the adsorption heat of these two algae is 59.5kJ/mol and 76.8 kJ/mol respectively. Temperature could affect the algae‘s adsorption capacity. Their adsorption capacity increases with temperature (25℃ and 35℃).
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| 关 键 词： | 热力学分析 重金属离子 生物吸附 吸附催化 马尾藻类海草 |
Thermodynamic Analysis of Heavy Metals Biosorption by Two Macroalgae |
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| Chen Lidan.Thermodynamic Analysis of Heavy Metals Biosorption by Two Macroalgae[J].Marina Science Bulletin,2004,6(1):47-52. |
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| Authors: | Chen Lidan |
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| Abstract: | The thermodynamic process of two macroalgae, Sargassumfusiforme and Lamin aria japonica, absorbing heavy metal ions Cu2+, Pb2+, Cd2+ and Ni2+, has been studied. The result indicates that the absorption isotherms of these two macroalgae clearly accord with the Landmuir adsorption model. The absorptive processes of S. fusiforme and L. japonica for Cu2+ are endothermal, and at 35 ℃, the adsorption heat of these two algae is 59.5 kJ/mol and 76.8 kJ/mol respectively. Temperature could affect the algae's adsorption capacity. Their adsorption capacity increases with temperature ( 25 ℃ and 35 ℃ ). |
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| Keywords: | thermodynamics of biosorption adsorption capacity heavy metal macroalgae |
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