Data · dataset · 2026
Mineralization of Gaseous Hg<sup>0</sup> in Flue Gas to Cinnabar Induced by Pyrite
Listed in UCL Research Data Repository
The application of metal sulfides in capturing gaseous Hg<sup>0</sup> from flue gas is restricted due to their limited adsorption capacities, as Hg<sup>0</sup> capture occurs mainly on the surface with little involvement of the saturated sulfur (S) coordination beneath.
Description
Herein, the surface adsorption of Hg<sup>0</sup> on pyrite (FeS<sub>2</sub>) is innovatively converted into a chemical reaction through intermittent thermal treatment and water washing, enabling approximately 100% of the lattice S in FeS<sub>2</sub> to participate in Hg<sup>0</sup> capture.
Accordingly, the Hg<sup>0</sup> capture capacity of pyrite is enhanced by more than 1 order of magnitude to 1671 mg g<sup>–1</sup>, and gaseous Hg<sup>0</sup> in flue gas is ultimately mineralized into high-grade cinnabar. Thermal treatment promotes the cleavage of Fe–S bonds following Hg<sup>0</sup> adsorption, generating highly unsaturated Fe coordination sites, whereas water washing induces the dissociation of these highly unsaturated Fe coordination structures to regenerate unsaturated sulfur coordination sites for subsequent Hg<sup>0</sup> adsorption.
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Therefore, the saturated S coordination beneath the surface can gradually participate in Hg<sup>0</sup> adsorption due to the denudation of the pyrite surface by the process of Hg<sup>0</sup> adsorption, thermal treatment, and water washing. Pyrite with novel operation displays significant potential to recover gaseous Hg<sup>0</sup> emitted from flue gas as cinnabar for centralized control.
Links
Where it is published
- DOI doi.org/10.1021/acs.est.6c08022.s001 ↗
DOI / persistent id · from rdr ucl ac uk
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from rdr ucl ac uk
Topics
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| UCL Research Data Repository | oai:figshare.com:article/34050147 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].anzsrc:group:3101 | mapping · rdr ucl ac uk | vocabulary-mapper@1.0.0 | keywords['Cell Biology'] |
| concepts[field].anzsrc:group:3102 | mapping · rdr ucl ac uk | vocabulary-mapper@1.0.0 | keywords['Computational Biology'] |
| concepts[field].local:field:chemistry | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| description | source · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | /metadata/dc/description |
| license | source · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | /metadata/dc/rights |
| publication_date | source · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | |
| title | source · rdr ucl ac uk | connector:rdr_ucl_ac_uk@1.0.0 | /metadata/dc/title |