Assertion: carbon black's carbon | /r/ObjectUse | used as substrate
Facets:
value: for the application of various chemicals
type: PURPOSE
Source sentences:
text: Activated carbon can be used as a substrate for the application of various chemicals to improve the adsorptive capacity for some inorganic (and problematic organic) compounds such as hydrogen sulfide (H 2 S), ammonia (NH 3 ), formaldehyde (HCOH), mercury (Hg) and radioactive iodine-131(131I).