Modifying coconut shell activated carbon for improved purification of benzene from volatile organic waste gas

In this study, coconut shell-activated carbon was modified by the impregnation method. The best-modified reagent was 1% KOH. Under this condition, acetone’s equilibrium adsorption capacity by modified activated carbon (1% KOH-AC) reached 0.96 mg g−1. The effects of inlet time, inlet flow rate, inlet concentration, and adsorption temperature on the removal efficiency were discussed. With the increase of intake time, the removal efficiency of...