Journal
CHINESE JOURNAL OF CHEMICAL ENGINEERING
Volume 21, Issue 12, Pages 1425-1430Publisher
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/S1004-9541(13)60638-2
Keywords
activated carbon; oxidation; nitric acid concentration; surface characteristics; adsorption
Categories
Ask authors/readers for more resources
In this work we investigated the effect of nitric acid concentration on the pore structure, surface chemistry and liquid phase adsorption of olive stone based activated carbon prepared by mixing process using phosphoric acid and steam as activating agents. Chemicals and textural characterization show that the increase of HNO3 concentration increases considerably the total acidic groups but decreases specific surface area and pore volume. The study of adsorption in aqueous solutions of two organics, phenol and methylene blue, on raw and oxidized activated carbon indicates that the treatment of mixed activated carbon with different concentrations of nitric acid improves the adsorbent capacity for methylene blue at HNO3 concentrations less or equal to 2 mol.L-1, while it has a negative effect on phenol adsorption.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available