Spent vegetable-oil hydrogenation catalyst secondary resource
Used nickel-bearing catalyst from vegetable-oil hydrogenation for oil hardening, including catalyst-bearing filter-aid mixtures. This process-defined secondary resource differs from fresh catalyst, nickel metal, spent bleaching earth and refinery cracking or desulfurization catalysts. Bosio et al. describe a particular feed containing organic residues and diatomaceous-earth filtering aid; that composition is not a universal formulation. IFC process guidance independently identifies spent hydrogenation catalyst and its associated filtering aid. This identity-only record inherits no constituent criticality. Microbial leaching and sulfide recovery reported by Bosio remain uncurated because complete methods, figures and product characterization were not acquired.
Sources & References
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ifc_2015: World Bank Group / IFC (12 February 2015). Environmental, Health, and Safety Guidelines: Vegetable Oil Production and Processing. Paragraphs 8-9, pp. 2-4; Annex A.3, paragraph 56, pp. 23-24. Historical dated process/resource identity guidance, not a criticality list or deployment study.
https://www.ifc.org/content/dam/ifc/doc/2010/2015-vegetable-oil-processing-ehs-guidelines-en.pdf (accessed 2026-10-11) -
bosio_2008: Bosio, Viera and Donati (2008). Integrated bacterial process for the treatment of a spent nickel catalyst. Journal of Hazardous Materials 154:804-810. DOI 10.1016/j.jhazmat.2007.10.095. Publisher introduction and Spent catalyst section excerpt inspected for material origin; complete experimental evidence unavailable.
https://doi.org/10.1016/j.jhazmat.2007.10.095 (accessed 2026-10-11)
Curation History
| Timestamp | Curator | Action | Summary |
|---|---|---|---|
2026-10-11T11:40:45.616513Z |
Codex (GPT-6; Codex) | CREATE | Created a process-defined spent vegetable-oil hydrogenation catalyst identity from IFC guidance and the primary source material description; deferred inaccessible microbial experiment claims. |
Record source: data/records/spent-vegetable-oil-hydrogenation-catalyst.yaml