Review of surface oxidizing modification of activated carbon and influence on adsorption capacity
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摘要: 介绍了活性炭表面氧化改性技术的基本原理,对国内外研究者运用不同氧化工艺改性活性炭及其吸附性能变化的研究成果进行了分析总结。经过氧化改性后的活性炭在比表面积、孔容积等方面均有不同程度降低,而表面含氧官能团的数量增加显著。氧化改性后的活性炭对于各种重金属离子的吸附性能提升十分明显,而对于有机物的吸附性能则有不同程度的下降。最后,提出了活性炭表面氧化改性技术的发展趋势和方向。图1参40Abstract: The surface characteristics and chemical properties of activated carbon are important factors to determine the adsorption capacity. These two factors can be changed through certain surface oxidizing modification technology of activated carbon,and the adsorption capacity can be affected as well. The principle of surface oxidizing modification technology of activated carbon is introduced;the literatures of native and foreign researchers in recent years are summarized and reviewed. These studies showed that the surface area and pore volume decreased after the modification,while the number of surface oxygen-containing groups increased greatly. The surface oxidizing modification was helpful to the adsorption capacity of modified activated carbon to specific heavy metals,but it also has some negative effect on the adsorption of organic matters. The future development of surface oxidizing modification technology of activated carbon is also suggested at the end of this paper. [Ch,1 fig. 40 ref.]
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Key words:
- forest engineering /
- activated carbon /
- modification /
- adsorption /
- review
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.06.020

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