COMPOSITE GRANULAR SORBENT BASED ON NATURAL MATERIALS, ENRICHED WITH FeO, FOR RECULTIVATION OF LANDS CONTAMINATED WITH As Russian patent published in 2024 - IPC C09K17/40 C09K101/00 B01J20/14 B01J20/22 

FIELD: environmental protection.

SUBSTANCE: invention relates to environmental protection, technical solution of which relates to production of compositions based on materials of natural plant origin, can be used for cleaning technogenic soils and grounds from ions of arsenic and heavy metals. Invention relates to composite granulated sorbent based on natural materials, enriched with Fe₂O₃, for reclamation of lands contaminated with As³⁺. Sorbent is characterized by the fact that in addition to high-moor neutralized peat and diatomite, vermiculite additionally contains iron oxide Fe₂O₃, wherein said components in the mixture are in the following ratio of components in the mixture, wt. %: peat – 60; diatomite – 20; vermiculite – 10; iron oxide – 10.

EFFECT: sorbent increases adsorption of heavy metals.

1 cl, 3 dwg, 4 tbl