| 2,4-二氯苯酚在松花江沉积物上的吸附解吸 |
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| 引用本文： | 高鹏,冯玉杰,孙清芳,张照韩. 2,4-二氯苯酚在松花江沉积物上的吸附解吸[J]. 哈尔滨工业大学学报, 2010, 42(6): 967-971 |
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| 作者姓名： | 高鹏 冯玉杰 孙清芳 张照韩 |
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| 作者单位： | 哈尔滨工业大学城市水资源与水环境国家重点实验室;哈尔滨工业大学城市水资源与水环境国家重点实验室;哈尔滨工业大学城市水资源与水环境国家重点实验室;哈尔滨工业大学城市水资源与水环境国家重点实验室 |
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| 基金项目： | 国家高技术研究发展计划资助项目(2007AA06A411);国家创新研究团体基金资助项目(50821002);黑龙江省重大科技攻关资助项目(GA06C201-3) |
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| 摘 要： | 在松花江3个典型断面(哈尔滨、达连河和佳木斯)采集了3类不同性质的沉积物,分别研究了2,4-二氯苯酚在松花江沉积物上的吸附-解吸特性.结果表明:2,4-二氯苯酚在3种沉积物上的吸附在24h内均可达到吸附平衡,其吸附-解吸过程符合Freundlich方程(R20.92).在3类沉积物样品上的吸附作用强度大小依次为佳木斯沉积物达连河沉积物哈尔滨沉积物.2,4-二氯苯酚在3种沉积物上吸附-解吸滞后系数(HI)都小于1,说明2,4-二氯苯酚的解吸行为存在较为明显的滞后现象,HI值大小依次为:哈尔滨达连河佳木斯.HI值与沉积物理化性质成正相关(R20.444).
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| 关 键 词： | 2,4-二氯苯酚 松花江 沉积物 吸附 解吸 |
Adsorption and desorption of 2,4-Dichlorophenol (2,4-DCP) on the sediment of Songhua River |
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| GAO Peng,FENG Yu-jie,SUN Qing-fang and ZHANG Zhao-han. Adsorption and desorption of 2,4-Dichlorophenol (2,4-DCP) on the sediment of Songhua River[J]. Journal of Harbin Institute of Technology, 2010, 42(6): 967-971 |
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| Authors: | GAO Peng FENG Yu-jie SUN Qing-fang ZHANG Zhao-han |
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| Affiliation: | State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology, Harbin 150090,China;State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology, Harbin 150090,China;State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology, Harbin 150090,China;State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology, Harbin 150090,China |
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| Abstract: | In this paper,the batch isotherm experiments were performed to study the characteristics of adsorption and desorption of 2,4-DCP on three sediments with different physical-chemical characters,which were collected from the Songhua River in Harbin,Dalianhe and Jiamusi. Experimental results demonstrate that the adsorption of 2,4-DCP in three sediments can be completely balanced in 24 h. The adsorption isotherm is nonlinear and fitted with the form of the Freundlich equation under experimental condition(R2 >0. 92). The adsorption capacity of sediment follows the order: Jiamusi sediment > Dalianhe sediment > Harbin sediment. The value of HI follows the order: Harbin sediment > Dalianhe sediment > Jiamusi sediment. The desorption process of 2,4DCP has an obvious hysteresis,and all of them are less than 1. Furthermore,the co-relationship between HI and the physical-chemical characters of sediment is positive(R2 >0. 444). |
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| Keywords: | 2,4-Dichlorophenol the Songhua River sediment adsorption desorption |
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