Analysis of regeneration efficiency of exhausted activated
carbon
To explore the feasibility of activated carbon regenerated with
organic solvents, the activated carbon regenerated by different
organic solvents was used again as an adsorbent in the treatment
of coking wastewater (Table 2).
It can be seen from Table 2 that the higher the regeneration
efficiency of solvents for activated carbon is, the better the
COD removal effect of the activated carbon in coking wastewater.
Among these regeneration solvents, methylene dichloride had
the highest regeneration efficiency for activated carbon, whereas
the dodecylbenzenesulphonic acid sodium solution had the lowest.
Based on this result, it could be determined that the dodecylbenzenesulphonic
acid sodium solution was not suitable for use as a
regenerating agent in coking wastewater treatment.