I. Yu. Zykov, N. I. Fedorova, V. E. Tsvetkov, N. N. Ivanov
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引用次数: 0
摘要
研究了碳吸附剂对水溶液中苯胺的吸附。吸附剂取自 D 和 G 库兹涅茨克盆地的煤炭，在 800°C 温度下使用氢氧化钾进行化学活化，当时煤炭/碱的比例（按质量计）分别为 1.0 : 0.5 和 1.0 : 1.0。吸附剂主要由微孔组成，比表面相对较高（700-1340 m2/g）。绘制了实验吸附等温线。在此基础上，计算了 Langmuir、Freundlich、Dubinin-Astakhov 和 BET 吸附模型的参数。这些模型都适用于描述苯胺吸附（R2 > 0.9）。Langmuir 模型最为精确。状态参数表明，这种方法对苯胺的吸附非常有效。这一过程可描述为微孔吸附剂表面的单分子吸附。吸附过程的热机械特性较低。这表明是物理吸附。
Chemically Activated Carbon for the Adsorption of Aniline from Water
The adsorption of aniline from aqueous solution on carbon sorbents is investigated. The sorbents are derived from D and G Kuznetsk Basin coal by chemical activation using potassium hydroxide at 800°C, when the coal/alkali ratio (by mass) is 1.0 : 0.5 and 1.0 : 1.0. The sorbents consist mainly of micropores, and their specific surface is relatively high (700–1340 m2/g). The experimental adsorption isotherms are plotted. On that basis, the parameters of the Langmuir, Freundlich, Dubinin–Astakhov, and BET sorption models are calculated. The models are appropriate for the description of aniline adsorption (R2 > 0.9). The Langmuir model is the most accurate. The state parameters indicate that the adsorption of aniline by this means is very effective. The process may be described as monomolecular adsorption on the surface of microporous sorbents. The thermomechanical characteristics of the adsorption process are low. That indicates physical adsorption.
期刊介绍：
The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.
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