| 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.DOI:10.11918/j.issn.0367-6234.2010.06.030 |
| GAO Peng,FENG Yu-jie,SUN Qing-fang,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.DOI:10.11918/j.issn.0367-6234.2010.06.030 |
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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(R2>0.92).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(R2>0.444). |
| 关键词: 2,4-二氯苯酚 松花江 沉积物 吸附 解吸 |
| DOI：10.11918/j.issn.0367-6234.2010.06.030 |
| 分类号:X52 |
| 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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| 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, ZHANG Zhao-han
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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). |
| Key words: 2,4-Dichlorophenol the Songhua River sediment adsorption desorption |
