| 典型pH条件下腐殖酸混凝特性研究 |
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| 引用本文： | 金鹏康,佘静静,刘岚,王晓昌.典型pH条件下腐殖酸混凝特性研究[J].西安建筑科技大学学报(自然科学版),2011,43(2):215-219. |
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| 作者姓名： | 金鹏康 佘静静 刘岚 王晓昌 |
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| 作者单位： | 1. 西安建筑科技大学环境与市政工程学院,陕西西安,710055
2. 西部建筑科技国家重点实验室(筹),陕西西安,710055 |
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| 基金项目： | 国家自然科学基金资助项目(50708088,50978211) |
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| 摘 要： | 通过荧光检测和光学在线监测技术,分析探讨了腐殖酸与铝盐的混凝特性.实验结果表明,在弱酸性和中性条件下腐殖酸与铝盐的混凝特性有着明显的差异.在弱酸性条件下,铝离子与腐殖酸之间的共聚络合反应占绝对优势,而且水中残余铝离子浓度一直与铝离子总投量成线性关系.然而在pH=7的条件下,铝离子的水解反应明显占优势,直到铝离子投量超过0.1 mM之后才发生与腐殖酸的结合,属于氢氧化铝沉淀物对腐殖酸分子的吸附和网扫絮凝.
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| 关 键 词： | 腐殖酸 光学在线监测 荧光检测 共聚络合 |
Characterization of Al-humic complexation at typical pH |
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| JIN Peng-kang,SHE Jing-jing,LIU Lan,WANG Xiao-chang.Characterization of Al-humic complexation at typical pH[J].Journal of Xi'an University of Architecture & Technology,2011,43(2):215-219. |
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| Authors: | JIN Peng-kang SHE Jing-jing LIU Lan WANG Xiao-chang |
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| Affiliation: | 1.School of Envir.& Muni.Eng.,Xi′an Univ.of Arch.&Tech.Xi′an,710055,China;2.State Key Laboratory of Science and Technology in west China(XAUAT),Xi′an,710055,China) |
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| Abstract: | The characteristics of Al-humic complexation in the process of coagulation of natural humic acids(HA) were studied using fluorescence and optical monitoring techniques.Under two typical pH values,the pattern of Al-humic interaction was found to be much different from each other through the fluorescence analysis result: At pH 5.0,the dosed Al ions were reacting with HA molecules at a constant rate to form Al-humic complexes,while at pH 7.0,the dosed Al remained unrelated until its concentration rose to a hig... |
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| Keywords: | Humic acid online optical monitoring fluorescence technique coprecipitation |
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