| 水化学性质对蒙脱石悬浮液膨胀性的影响 |
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| 引用本文： | 马蕾,彭昌盛,范超,徐兴永,于洪军.水化学性质对蒙脱石悬浮液膨胀性的影响[J].中国海洋大学学报(自然科学版),2011(Z1):379-385. |
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| 作者姓名： | 马蕾 彭昌盛 范超 徐兴永 于洪军 |
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| 作者单位： | 中国海洋大学环境科学与工程学院海洋环境与生态教育部重点实验室;国家海洋局第一海洋研究所; |
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| 基金项目： | 教育部科技创新工程重大项目培育资金项目(708060);教育部新教师基金项目(200804231036); 我国近海海洋综合调查与评价专项(908-02-03-05,908-01-BC17)资助 |
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| 摘 要： | 实验研究了NaOH、HCl、NaCl和CaCl2等电解质加入量对蒙脱石悬浮液膨胀性的影响,并通过离子色谱、体视显微镜和激光粒度分析技术,研究了蒙脱石粒度变化与体积膨胀之间的关系。实验结果表明,NaOH、HCl对蒙脱石悬浮液膨胀性影响不明显,而NaCl和CaCl2对蒙脱石悬浮液的膨胀有明显的抑制作用;而且CaCl2对蒙脱石膨胀的抑制作用明显强于NaCl,CaCl2浓度比NaCl少了1个数量级时即可达到相同的膨胀抑制效果。离子色谱分析显示,CaCl2溶液与蒙脱石混合后,悬浮液上清液中的Ca2+浓度减少,而Na+浓度增加,分析存在离子交换过程。经激光粒度分析仪和体视显微镜观察,电解质的加入使颗粒之间产生了团聚作用,改变了颗粒的粒径,从而在宏观上表现为蒙脱石悬浮液体积的减少。
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| 关 键 词： | 蒙脱石 电解质浓度 悬浮液膨胀体积 团聚和分散过程 粒度分布 |
The Influence of Hydrochemistry on the Swelling of Montmorillonite Suspension |
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| MA Lei,PENG Chang-Sheng,FAN Chao,XU Xing-Yong,YU Hong-Jun.The Influence of Hydrochemistry on the Swelling of Montmorillonite Suspension[J].Periodical of Ocean University of China,2011(Z1):379-385. |
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| Authors: | MA Lei PENG Chang-Sheng FAN Chao XU Xing-Yong YU Hong-Jun |
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| Institution: | MA Lei1,PENG Chang-Sheng1,FAN Chao1,XU Xing-Yong2,YU Hong-Jun2(1.Key Lab of Marine Environmental Science and Ecology,Ministry of Education,College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China,2.The First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China) |
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| Abstract: | This experiment researched on how NaOH and HCl influenced on swelling of montmorillonite suspension,as well as the addition of NaCl and CaCl2.By using the ion Chromatography,stereomicroscope and the technique of laser particle size analysis,the research studied the relationship between particle size changes of montmorillonite and its swelling.The result showed that pH which was adjusted by NaOH and HCl had no obvious effect on the suspension swelling;the NaCl and CaCl2 solution inhibited the swelling,the mo... |
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| Keywords: | montmorillonite electrolyte concentration the volume of suspension swelling aggregation and dispersion processes particle size distribution |
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