RCRA Hazardous Waste Number
Spent Hydrorefining catalyst from petroleum refining operations, including guard beds used to desulfurize feeds to other catalytic reactors (this listing does not include inert support media)
Official source: 40 CFR Part 261 (eCFR)Have a K172 stream? See the dossier that replaces the feasibility study.
See the validation dossierHazard Basis
Listed - toxic
Industry Source
Petroleum refining
Regulation
40 CFR Part 261
Need recovery options for a K172 stream?
Map recovery routes for K172Source-specific wastes from 13 named industries, including petroleum refining, wood preservation, pesticide manufacturing and iron and steel production. Each K code names both the industry and the exact process residue.
K codes apply only to the named industry and the named process residue.
Many K wastes have established recovery paths inside their industry (e.g. metals reclamation from refinery and steel residues).
Land disposal restrictions (40 CFR Part 268) set treatment standards before disposal.
Recognized recovery routes for this waste family, ranked by typical recovery tier. Which route fits depends on your specific stream — composition, volume and region.
Oil-bearing refinery residues reinserted into the refining process for oil recovery are excluded from solid waste regulation — the recognized highest-value route for these streams.
40 CFR 261.4(a)(12) — oil-bearing residues returned to refiningOrganic-bearing streams with usable fuel value can be blended and burned for energy recovery in permitted boilers and industrial furnaces instead of being incinerated as pure disposal.
40 CFR Part 266 Subpart H — burning for energy recoveryWhere no recovery route fits the stream, land disposal restriction treatment standards define the required treatment before landfill — the compliance floor, not a recovery outcome.
40 CFR 268.40 — LDR treatment standardsThese are the typical routes for the K list. Your stream's actual options depend on its composition and where it sits.
See how this gets validatedSpent Hydrorefining catalyst from petroleum refining operations, including guard beds used to desulfurize feeds to other catalytic reactors (this listing does not include inert support media)
With a lab analysis, the engine checks the stream against each receiving route's published limits and returns what is supported, what is refused, and why. Without one yet, we tell you which routes it can evaluate and what analysis that needs.
See what the output looks like: a worked dossier.
Deepen your understanding of industrial symbiosis and circular economy strategies.