Production of Activated Carbon via Oxidation with K2Cr2O7 and Chemical Treatment

Abstract

In this work activated carbon of good quality prepared using oxidation
condensation process.
The oxidation of the asphlatic materials was conducted using several
percentage of K2Cr2O7 and in the presence of a stream of air or oxygen. The reaction
mixture was heated at 350°C for 3hrs. This followed by removal of uncarbonized
materials under reduced pressure. The condensation of the fraction obtained is
expected to recombine or rereact to give a high carbon content. The carbonization and
activation was conducted at 550±25°C for 3hrs. and the ratio of the feedstock to
NaOH was (1:2).
After the carbonization was completed, the reaction mixture was subjected to
purification by treatment with 10% HCl and distiller water till it gives neutral test to
the litmus paper. The samples were dried at 120°C for 24hrs. and its physical
properties were determined.
The research work indicated that a good quality activated carbon can be obtained
when the oxidation of sample was conducted using 3% K2Cr2O7.