DOI 10.35776/VST.2022.06.07
UDC 628.544:54-414

Moniak Tat’iana, Romanovskii Valentin

Magnetic sorbents from galvanic sludge for oily wastewater treatment

Summary

The results of studying the properties of sorbents prepared from galvanic sludge in relation to oil products are presented. For the synthesis, the method of solution combustion synthesis was chosen. Glycine was used as a reducing agent in a stoichiometric ratio with the oxidizing agent. X-ray phase analysis of the obtained samples showed that they contained iron mainly in the form of a magnetite phase. The total static exchange capacity and specific surface area of the synthesized sorbent samples (up to 130 m²/g) were determined from the sorption of the methylene blue dye. The oil capacity of the obtained materials (up to 3 g/g) is not inferior to the natural sorbents of oil products. Preparing magnetic oil sorbents is possible by the combined use of waste iron and nickel-containing galvanic sludges resulting in the reduction of the negative anthropogenic impact on the environment and elimination of the expensive technologies.

Key words

oil products , wastewater treatment , sorbent , exothermic combustion in solutions , galvanic sludges