Effect of metal additives on the physico-chemical characteristics of activated carbon exemplified by benzene and acetic acid adsorption
Journal
Carbon
Journal Volume
37
Journal Issue
12
Pages
1919-1928
Date Issued
1999
Author(s)
Abstract
The effects of treatment with inorganic salts exemplified by Mg (NO3)2 or Ba (NO3)2 on the physical-chemical characteristics of activated carbon were studied. Results indicate that the pore volume remains relatively unchanged upon salt treatment when the pore diameter ranges between 7 angstrom and 20 angstrom. Significant variation in pore volume was observed when pore diameter is less than 7 angstrom; generally, the pore volume of AC is greater than AC-Ba and AC-Mg. Major oxygen functional groups such as hydroxyl group for AC, carboxyl group for AC-Ba, and hydroxyl and carbonyl groups for AC-Mg were created. Regenerated at a temperature of 400°C, creates more pore volume especially when treated with Mg(NO3)2 with an increase of 13.0%. The regenerated AC-Mg exhibits the greatest acetic acid adsorption capacity among all activated carbons studies.
SDGs
Type
journal article