Regularities of phenol adsorption from aqueous solutions on carbon-mineral materials obtained from bentonite clay

被引：4
|
作者：
Badmaeva, S. V. [1 ]
Khankhasaeva, S. Ts. [1 ,2 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Baikal Inst Nat Management, Buryatia 670047, Russia
[2] Buryat State Univ, Buryatia 670000, Russia
来源：
COLLOID JOURNAL | 2015年 / 77卷 / 06期
基金：
俄罗斯基础研究基金会;
关键词：
MONTMORILLONITE; NANOCOMPOSITES; COMPOSITES; REMOVAL;
D O I：
10.1134/S1061933X15060034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Carbon-mineral materials are obtained by impregnation of bentonite clay with an organic modifier (sucrose) solution under the action of ultrasonic vibration followed by carbonization in water vapor atmosphere. It is shown that the ultrasonic treatment of the clay suspension yields carbon-mineral materials with higher specific surface area and affinity for phenol than those of the starting clay and the material obtained without ultrasonic impact. The adsorption capacity of this sample with respect to phenol is 110 mg/g, which is higher than that of active brown coals. The main parameters affecting phenol adsorption by carbon-mineral materials are pH, sorbent content, phenol concentration, and temperature. The kinetics of phenol adsorption from an aqueous solution on the carbon-mineral sorbent corresponds to a psevdo-first-order reaction with a correlation coefficient of 0.9977.
引用
收藏
页码：685 / 691
页数：7
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