| 水环境中腐殖酸的荷电特性与聚集特性 |
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| 引用本文： | 杨毅,兰亚琼,金鹏康,王晓昌. 水环境中腐殖酸的荷电特性与聚集特性[J]. 环境工程学报, 2014, 8(4): 1539-1542 |
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| 作者姓名： | 杨毅 兰亚琼 金鹏康 王晓昌 |
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| 作者单位： | 西安建筑科技大学环境与市政工程学院, 西安 710055;浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006;西安建筑科技大学环境与市政工程学院, 西安 710055;西安建筑科技大学环境与市政工程学院, 西安 710055 |
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| 基金项目： | 西安建筑科技大学基础研究基金项目（JC1307） |
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| 摘 要： | 通过腐殖酸的Zeta电位和粒径的变化规律研究,探讨化学条件对腐殖酸的荷电状态和聚集状态的影响。结果表明,腐殖酸具有自我凝聚的特性;在pH较低和溶液离子强度较高时,腐殖酸胶粒的Zeta电位绝对值减小而聚合度增大,从而使腐殖酸胶粒聚集而凝聚;随腐殖酸浓度增大,腐殖酸胶粒的Zeta电位绝对值增大,腐殖酸胶粒的缩聚程度降低而使粒径减小。
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| 关 键 词： | 腐殖酸 荷电特性 聚集特性 |
Charged characteristics and aggregation properties of humic acid in water environment |
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| Yang Yi,Lan Yaqiong,Jin Pengkang and Wang Xiaochang. Charged characteristics and aggregation properties of humic acid in water environment[J]. Techniques and Equipment for Environmental Pollution Control, 2014, 8(4): 1539-1542 |
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| Authors: | Yang Yi Lan Yaqiong Jin Pengkang Wang Xiaochang |
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| Affiliation: | School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China;Department of Environmental Technology and Ecology, Yangtze Delta Region Institute of Tsinghua University, Key Laboratory for Water Science and Technology of Zhejiang Province, Jiaxing 314006, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China;School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China |
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| Abstract: | By studying the changing rules of the Zeta potential and particle size,the effect of chemical conditions on the states of the charge and aggregation of the humic acids(HAs) was discussed.It was found that the HAs had the property of self-flocculation.With the lower pH and the relatively higher ionic strength,the absolute values of Zeta potential for the HA colloidal particles decreased with polymerization degree increasing,thereby forming micelle aggregation and coagulation.Moreover,with the increasing of the HA concentration and subsequently the increasing of the absolute values of Zeta potential,the condensation degree of the HA colloidal particles decreased,which resulting in the state with the smaller particle sizes. |
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| Keywords: | humic acid charged characteristics aggregation properties |
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