Modified steel slag as well as preparation method and application thereof

Abstract

The invention discloses modified steel slag as well as a preparation method and application thereof. The modified steel slag is prepared by modifying steel slag through a salicylic acid solution and acobalt ion solution. The modified steel slag disclosed by the invention has the advantages of large specific surface area, good catalytic performance, low preparation cost, environment protection andcapability of preventing a water body from being acidified and the like; the preparation method of the modified steel slag has the advantages of wide raw material source, low production cost, simplepreparation process, convenience for operation, low energy consumption, no production of toxic and harmful substances, environment friendliness and the like. The modified steel slag can be used as a catalyst of Fenton-like reaction and can be used for treating antibiotic wastewater; wastes of metallurgical slag can be reutilized and antibiotics can be effectively degraded; meanwhile, the modifiedsteel slag also has the advantages of convenience for operation, relatively low cost, high treatment efficiency, good treatment effect, small dosage of added chemical agents, environment protection and the like; an acidifying effect of traditional Fenton oxidization reaction on the water body can be reduced, the water body is prevented from being acidified and the modified steel slag has a very good application prospect.

Description

technical field [0001] The invention belongs to the field of environmental treatment, and relates to a modified steel slag and its preparation method and application. Background technique [0002] Antibiotics are a class of secondary metabolites with anti-pathogen or other activities produced by microorganisms (including bacteria, fungi, actinomycetes) or higher animals and plants in the course of life, which can interfere with the developmental functions of other living cells chemicals. In the 1930s, it was discovered that sulfonamides were effective in the treatment of hemolytic streptococcal infections and were used as clinical drugs. In 1939, the scientist Gerhard Domagk won the Nobel Prize in Medicine for his discovery of the inhibitory effect of Prontosil on Streptococcus. By 1945, more than 5,400 sulfonamides had been synthesized, among which more than 20 were commonly used in clinical practice, such as sulfacetamide, sulfapyridine, sulfathiazole, and sulfamidine. ...

AI Technical Summary

Problems solved by technology

Since the steel slag contains a relatively high content of iron, this can provide iron ions for the Fenton-like reaction, but because the steel slag also contains a large amount of alkaline components such as CaO, it will be hydrolyzed in the solution and cause the pH of the solution to rise sharply. In order to ensure the Fenton-like reaction The continuous progress of the reaction requires the continuous addition of acid solution to control the pH of the reaction system, which increases the difficulty of operation and processing costs

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