2026-10-14T05:27:04Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34050147 2026-10-01T18:03:57Z category_915 category_12 category_16 category_272 category_873 category_734 category_128 category_135 portal_63 item_type_6 month_year_10_2026

Mineralization of Gaseous Hg⁰ in Flue Gas to Cinnabar Induced by Pyrite Liutao Zong (22641899) Haoshuai Wang (22641902) Jialiang Zhou (5578253) Pengjian Lv (13047574) Hongyan Yu (405816) Shangchao Xiong (1485844) Shijian Yang (1485853) Physical Sciences not elsewhere classified Cell Biology Physiology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Biological Sciences not elsewhere classified Hematology Computational Biology enabling approximately 100 1671 mg g thermal treatment promotes intermittent thermal treatment capture occurs mainly 0 </ sup bonds following hg limited adsorption capacities 2 </ sub recover gaseous hg capturing gaseous hg thermal treatment gaseous hg water washing ultimately mineralized restricted due metal sulfides little involvement innovatively converted flue gas fe – coordination beneath chemical reaction centralized control capture capacity 1 order The application of metal sulfides in capturing gaseous Hg⁰ from flue gas is restricted due to their limited adsorption capacities, as Hg⁰ capture occurs mainly on the surface with little involvement of the saturated sulfur (S) coordination beneath. Herein, the surface adsorption of Hg⁰ on pyrite (FeS₂) is innovatively converted into a chemical reaction through intermittent thermal treatment and water washing, enabling approximately 100% of the lattice S in FeS₂ to participate in Hg⁰ capture. Accordingly, the Hg⁰ capture capacity of pyrite is enhanced by more than 1 order of magnitude to 1671 mg g^–1, and gaseous Hg⁰ in flue gas is ultimately mineralized into high-grade cinnabar. Thermal treatment promotes the cleavage of Fe–S bonds following Hg⁰ 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 Hg⁰ adsorption. Therefore, the saturated S coordination beneath the surface can gradually participate in Hg⁰ adsorption due to the denudation of the pyrite surface by the process of Hg⁰ adsorption, thermal treatment, and water washing. Pyrite with novel operation displays significant potential to recover gaseous Hg⁰ emitted from flue gas as cinnabar for centralized control. 2026-10-01T00:00:00Z Text Journal contribution 10.1021/acs.est.6c08022.s001 https://figshare.com/articles/journal_contribution/Mineralization_of_Gaseous_Hg_sup_0_sup_in_Flue_Gas_to_Cinnabar_Induced_by_Pyrite/34050147 CC BY-NC 4.0