ADSORPTION BEHAVIOR OF HUMIC SUBSTANCES ON ACTIVATED CARBON - COMPARISON WITH THE PHYSICAL AND CHEMICAL CHARACTER OF MATERIAL FROM DIFFERENT ORIGIN

被引：9

作者：

ABBTBRAUN, G

JOHANNSEN, K

KLEISER, M

FRIMMEL, FH

机构：

[1] Engler-Bunte Institute, University Karlsruhe, Department of Water Chemistry

来源：

ENVIRONMENT INTERNATIONAL | 1994年 / 20卷 / 03期

关键词：

D O I：

10.1016/0160-4120(94)90126-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The adsorption behaviour of humic substances on activated carbon was different for samples of different origin. Humic substances isolated from bog lakes or from aqueous soil solutions are less adsorbable than those from rivers, groundwater, or samples from landfill leachates. The adsorption behaviour was determined by different physical and chemical parameters. The experimental data could be described by model calculations based on Freundlich equations for two fictive components of the total dissolved organic carbon. The nominal molecular weight distribution of humic substances from bog lakes and soil solution showed relatively high values. In addition, these substances had pronounced aromatic structures. This goes along with a relatively weak adsorption on activated carbon. There was no clear correlation concerning the hydrophilic character of the humic substances and their acidic character (proton capacity). Humic substances isolated from river water, groundwater, and landfill leachates showed lower nominal molecular weight and lower UV-absorbance. They had a higher aliphatic character and were more readily adsorbed on activated carbon than the other samples. The findings are of technical importance for water treatment.

引用

页码：397 / 403

页数：7

共 10 条

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