| 腐殖酸在海水/矿物界面上的吸附行为 |
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| 引用本文： | 田充,王江涛.腐殖酸在海水/矿物界面上的吸附行为[J].中国海洋大学学报(自然科学版),2010,40(2). |
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| 作者姓名： | 田充 王江涛 |
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| 作者单位： | 1. 中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东,青岛,266100;临沂师范学院化学化工学院,山东,临沂,276005
2. 中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东,青岛,266100 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，山东省自然科学基金 |
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| 摘 要： | 用批量平衡实验法研究了腐殖酸(Humic acid,HA)在4种矿物蒙脱石、高岭石、针铁矿和水锰矿上的吸附。Freundlich和Langmuir模型都可以很好地描述吸附行为。矿物对腐殖酸的吸附能力顺序为:针铁矿水锰矿蒙脱石高岭石。增大盐度有利于促进吸附,但溶解有机质对吸附影响很小。腐殖酸在蒙脱石、高岭石和水锰矿3种矿物上的吸附随溶液pH值的升高而减少,而在针铁矿上的吸附只有当pH值高于7时才逐渐降低。腐殖酸在矿物表面上的作用机制最可能是疏水作用和氢键作用。
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| 关 键 词： | 腐殖酸 矿物 吸附 |
Adsorption of Humic Acid on Seawater-Mineral Interface |
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| TIAN Chong,WANG Jiang-Tao.Adsorption of Humic Acid on Seawater-Mineral Interface[J].Periodical of Ocean University of China,2010,40(2). |
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| Authors: | TIAN Chong WANG Jiang-Tao |
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| Institution: | TIAN+Chong1,2,WANG+Jiang-Tao1(1.Key+Laboratory+of+Marine+Chemistry+Theory+,+Technology,Ministry+of+Education,Ocean+University+of+China,Qingdao+266100,China,2.School+of+Chemistry+%26+Chemical+Engineering,Linyi+Normal+University,Linyi+276005,China) |
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| Abstract: | The sorption of humic acid on these four minerals(montmorillonite,kaolinite,goethite and managanite) was investigated in batch equilibrium experiments.The sorption behavior could well be described by both Freundlich model and Langmuir model.The sorption capacity was as followed: goethite >managanite>montmorillonite>kaolinite.Under the experimental conditions,the amount of humic acid adsorbed onto mineral increased with increasing salinity whereas the presence of dissolved organic matter appeared to have min... |
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| Keywords: | humic acid mineral adsorption |
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