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首页> 外文期刊>Applied Surface Science >Heterogeneity of activated carbons with different surface chemistry in adsorption of phenol from aqueous solutions
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Heterogeneity of activated carbons with different surface chemistry in adsorption of phenol from aqueous solutions

机译：水溶液吸附苯酚过程中不同表面化学活性炭的异质性

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摘要

The heterogeneity of activated carbons is investigated on the basis of adsorption isotherms of phenol from dilute aqueous solutions at different values of pH in the solution. The original carbon studied was prepared from polyethyleneterephtalate (PET). Its various oxygen surface functionalities were systematically changed by additional nitric acid and heat treatments. The Dubinin-Astakhov adsorption-isotherm equation was used to evaluate the parameters characterizing the adsorption of phenol from dilute water solutions on activated carbon surfaces. Adsorption energy distribution functions were calculated by the INTEG algorithm, based on a regularization method. Analysis of distribution functions for activated carbons provides significant comparative information about their energetic heterogeneity. Moreover, a comparison of the resulting energies obtained from the distributions can be made with enthalpic data. (c) 2005 Elsevier B.V. All rights reserved.
机译：在溶液中不同pH值下，稀水溶液中苯酚的吸附等温线研究了活性炭的异质性。研究的原始碳由聚对苯二甲酸乙二醇酯（PET）制备。通过额外的硝酸和热处理，系统地改变了它的各种氧气表面功能。用Dubinin-Astakhov吸附-等温方程评估了表征稀碳水溶液中苯酚在活性炭表面吸附的参数。基于正则化方法，通过INTEG算法计算吸附能分布函数。活性炭分布函数的分析提供了有关其能量异质性的重要比较信息。此外，可以从焓分布中比较从分布获得的最终能量。 （c）2005 Elsevier B.V.保留所有权利。

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