The following are GENERAL GUIDELINES for acceptability of spent carbon for reactivation. Spent carbons which do not meet these guidelines can usually be processed using special handling and/or blending techniques. Greater than 98% of the projects submitted for reactivation acceptance are approved. However, due to the special handling required, return of these carbons may be approved with limitations as to choice of reactivation facility, method, volume and/or frequency of return.

The criteria listed below are guidelines. Because the regulations governing the operation of our reactivation facilities are complex and subject to change, Calgon Carbon Corporation must reserve the final right to reject the return of spent carbon to our facilities.


Limits of Acceptability

Volatile Sulfur

1.0 % Maximum

Volatile Chloride

1.7 % Maximum—Neville Island

4.0 % Maximum—Big Sandy

Volatile Bromide

0.3% Maximum

Volatile Fluoride

0.4 % Maximum

High Exotherm During Reactivation

Require Case-by-Case Approval


Maximum of 0.1 wt. %


Maximum of 1.0 wt. %

Trace Metals

Require Case-by-Case Approval (See Metals Guidelines below)

Acutely Toxic, Odorous, or OSHA Regulated Adsorbates

Case-by-Case Approval


Criteria for Return for Reactivation of RCRA Regulated Granular Activated Carbon (GAC), which must be met:


Limits of Acceptability


Greater than or equal to 12 × 40 Mesh

pH Range

Greater than 2.0 and less than 12.5

Ignitable (per RTM-10)

Not Acceptable (Although BSP is permitted to receive D001 manifested material, they may not receive any spent carbon which exhibits the characteristic of ignitability.)

Instantaneously Ignitable (per RTM-10)

Not Acceptable


Not Acceptable at BSP or BLP

< 20 ug/kg TEQs at NIP

Polychlorinated Biphenyls (PCB’s)

< 50 mg/kg at NIP

Not Acceptable at BSP or BLP

1,2-Dibromo-3-chloropropane (DBCP)

Not Acceptable


Not Acceptable

RCRA Waste Codes Not Acceptable

D001 (NIP), D002, D003, F020, F021, F022, F023, F026, F027, F028, F032

Reactive Cyanide > 250 mg/kg

Not Acceptable

Reactive Sulfide > 500 mg/kg

Not Acceptable


Not to Exceed Background Level

Note 1: Spent Granular Activated carbon to be returned for reactivation shall be free of any foreign debris (rock, wood, metal, etc.) or extraneous impurities, free of oil and grease, easily wetted by water, and free-flowing.

Note 2: Acceptance for reactivation of spent carbon which has not been supplied by Calgon Carbon Corporation must be investigated on a case-by-case basis.

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