Research of the Surface Changes in the Modification Process of Activated Carbon

Abstract:

This paper studied the changes in the surface morphology and microcrystalline structure of GAC modified using the original activated carbon, HNO₃, FeCl₂·4H₂0, KMnO₄. The micro pore structure on the surface is damaged after being treated by HNO₃, and the transition pores increase; after being treated by FeCl₂·4H₂0 and KMnO_4, the carbon surface is irregular, and there is a protuberance, which is due to the irregular loading of manganese ions on the activated carbon surface. Then the roughness of the activated carbon increases and the size of graphite crystallite of GAC is also greatly reduced, showing obvious trend of fine grains. Meanwhile, the studies of the effect of removing the trichlorophenol from water after modification indicate that the results basically match. On this basis, the modified model is put forward.

• Periodical: Applied Mechanics and Materials (Volume 526)
• Pages: 40-45
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.526.40
• Online since: February 2014
• Authors: Xiao Pin Wang*, Yi Hui Li, Cou Hua Zhu
• Keywords: Modified Activated Carbon, SEM, Surface Analysis

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