Exhibit 23.2 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statement on Forms S-8 (No. 33-34019, No. 333-01019 and No. 333-52199) of Calgon Carbon Corporation of our report dated February 8, 2000, included in this Annual Report on Form 10-K. PRICEWATERHOUSECOOPERS LLP Pittsburgh, Pennsylvania March 25, 2002 22