Adsorption of Environmental Pollutants on Pillared Montmorillonite

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Adsorption of Environmental Pollutants on Pillared Montmorillonite

机译：柱撑蒙脱石对环境污染物的吸附

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Both inorganic and organic pillared montmorillonites were used to adsorb phenol.Batch kinetics and isotherm studies were carried out to evaluate the effect of equilibrium time and pH on adsorption of phenol by montmorillouites and re-adsorbing characteristics of pillared montmorillonites.The adsorption of phenol increased with increasing solution pH values.The elimination ratio of phenol from the solution by the absorption of organic modified pillared montmorillonite (OrPMt) reached equilibrium quickly after vibrating for 5 minutes.Meanwhile for organic montmorillonite (OrMt),pillared montmorillouite (PMt) and montmorillonite (Mt),the time to reach phenol-absorption equilibrium were 20,30 and 90 minutes,respectively.The adsorbing capacity of the pillared montmorillonite modified with surfactant improved greatly.The phenol-adsorbing capacity of pillared montmorillonites mainly depended on microporous structure and surface component of the modified clays.After calcination at 500 ℃,the pillar structure and the basal spacing (1.83 nm) were still stable.So the pillared montmorillonite could be recycled,and it was a potential material for adsorbing environmental pollutants.

机译：无机和有机柱状蒙脱土均被吸附，通过分批动力学和等温线研究了平衡时间和pH值对蒙脱土吸附苯酚和柱状蒙脱土重吸收特性的影响。振动5分钟后，通过吸收有机改性的柱状蒙脱土（OrPMt）从溶液中消除的苯酚比率很快达到平衡。同时，有机蒙脱土（OrMt），柱状蒙脱石（PMt）和蒙脱土（Mt ），达到苯酚吸附平衡的时间分别为20、30和90分钟。表面活性剂改性的柱状蒙脱石的吸附能力大大提高。柱状蒙脱石的苯酚吸附能力主要取决于微孔结构和表面的组分改性粘土。在500℃下煅烧后，pi柱状结构和基底间距（1.83 nm）仍然稳定。因此，柱状蒙脱石可以回收利用，是吸附环境污染物的潜在材料。

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《土壤圈（英文版）》 |2001年第2期|159-166|共8页
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Department of Environmental Science and Engmcering,South University of Technology,;

Guangzhou Institute of Geochemistry,the Chinese Academy of Sciences,;

Guangzhou Institute of Geochemistry,the Chinese Academy of Sciences,;

College of Natural Resources and Environment,South Agricultural University,;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类土壤学;
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Adsorption of Environmental Pollutants on Pillared Montmorillonite

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