Iron-Based Adsorbents Derived from Groundwater Deferrization Sludge for Spent Oil Removal from Aqueous Media.

ABSTRACT: The paper presents the results of the synthesis and study of iron oxide-based sorbents (Fe _x O _y -NPs) obtained from iron removal station sludge by exothermic combustion in solution using glycine, urea, citric acid, and urotropine as reducing agents. X-ray phase analysis revealed that the phase composition depends on the nature of the reducing agent and temperature: at 300-500 °C, the magnetite content reached 97-99% for citric acid and urea, whereas when using glycine, the Fe₃O₄ fraction did not exceed 30%. The point of zero charge values shifted to the alkaline region with increasing synthesis temperature, reaching 8.8 at 700 °C. The specific surface area for methylene blue was up to 186 m²/g, but the calculated values

SUBMITTER: Romanovski V 

PROVIDER: S-EPMC12828610 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature