Chemical Aspects of the Obtaining of Iron-Containing Coagulant-Flocculant from Electric Steel Melting Slag for Wastewater Treatment

Abstract:

The possibility of producing iron and silicon-coagulant-flocculant for purification of waste water was shown. The electric steel melting slag JSC "OMK-Steel" has been used as the starting material, in which the content of iron oxide to 25.8% and silicon dioxide is 17.6%. The optimal parameters of slag hydrochloric opening were as follows: the modification time at T = 40 °C – 1 hour, the concentration of hydrochloric acid – 1.5 N, the ratio of the solid and liquid phases of S : L = 1 : 10. In these settings the concentration of hydrosilicic acid (for silicon) will be 1532 mg/l; the concentration of iron – 1250 mg/l has a lower concentration of silicic acid in the production of the solution with increasing temperature and time of exposure. This paper examined the chemical aspects of the process of obtaining the new iron-containing coagulant-flocculant based on electric furnace slag. The results can be used to produce coagulants and flocculants using industrial waste.

• Periodical: Solid State Phenomena (Volume 265)
• Pages: 403-409
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.265.403
• Online since: September 2017
• Authors: T.A. Vasilenko*, A.A. Koltun
• Keywords: Acid Modification, Chemical Properties, Coagulant, Electric Arc Furnace Slag, Flocculant, Iron-Containing Waste, Physical Properties

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