Purification of wastewaters, containing chromium, by a sorbent based on blast furnace slag

Pigments based on blast furnace slag from waste water

“…In this work we studied the effect of the cation nature, initial concentration and the duration of the process on the residual concentration of heavy metals in the solution. Conditions of conduction and justification of the main modes of the experiments are given in the work [11].…”

“…Chromium-containing compounds have been carefully studied in detail as ceramic pigments properties [10][11][12] for coloring glazes and ceramic products because of their high heat resistance and chemical resistance in combination with the optical properties.…”

“…Black pigments based on spinel composition (Fe,Co) (Fe,Cr) 2 O 4 or (Ni,Fe) (Fe,Cr) 2 O 4 have high heat resistance and stability properties. The authors of the work [11] examined the use of blast furnace slag as a basis for producing pigments of olive color from concentrated chromium-containing waste water.…”

“…Technology for brown color pigments production from concentrated waste water is described in detail in works [13][14][15]. A good alternative to commercial pigments synthesized from pure oxides are on iron oxides-based pigments obtained from pickling solutions [16].…”

Synthesis of Magnetic Biochar for Efficient Removal of Cr(III) Cations from the Aqueous Medium

“…Widely used adsorbents based on activated carbons, zeolites, silica gel, and active metal oxides have a high cost. Currently, many researchers are developing technologies for obtaining new cheap adsorbents or chemosorbents, which are not inferior in efficiency to industrial analogs [12][13][14][15][16].…”