Heterogeneous Fenton reagent and application thereof

Abstract

The invention belongs to the technical field of reagents for wastewater treatment, and particularly relates to a heterogeneous Fenton reagent and application thereof. The heterogeneous Fenton reagentprovided by the invention comprises ferrous disulfide, hydrogen peroxide and transition metal sulfide, wherein the transition metal sulfide comprises one or more of molybdenum disulfide, zinc sulfideand tungsten disulfide; and the hydrogen peroxide is independently subpackaged. In the heterogeneous Fenton reagent, the transition metal sulfide is used as a cocatalyst, ferric ions can be reduced into ferrous ions in time to continuously decompose hydrogen peroxide to generate hydroxyl radicals so as to degrade pollutants, the transition metal sulfide is used as a cocatalyst, the self-performance of the transition metal sulfide is not damaged, and the catalysis assisting effect can be continuously and stably exerted, so that the generation efficiency and stability of divalent ferrous ions onthe surface of ferrous disulfide can be improved by the transition metal sulfide, and the problem of secondary pollution caused by ferric ions contained in a homogeneous Fenton system solution is solved.

Description

technical field [0001] The invention belongs to the technical field of reagents for wastewater treatment, and in particular relates to a multiphase Fenton reagent and its application. Background technique [0002] Fenton's reagent refers to a strong oxidizing system composed of hydrogen peroxide and ferrous ions, which is widely used in the field of wastewater treatment. The traditional homogeneous Fenton system currently used, because Fe 3+ with Fe 2+ Conversion is severely thermodynamically limited, thus requiring higher Fe 2+ Concentration and H 2 o 2 Concentration, causing great damage to water quality and equipment; although there is a combination of electrochemical technology, ultrasonic technology or the addition of reducing reagents to improve Fe 3+ to Fe 2+ conversion efficiency, but reducing reagents are likely to cause secondary pollution of the water system and other issues. [0003] At present, the concept of using Fenton's reagent to degrade pollutants i...

AI Technical Summary

Problems solved by technology

The traditional homogeneous Fenton system currently used, because Fe 3+ with Fe 2+ Conversion is severely thermodynamically limited, thus requiring higher Fe 2+ Concentration and H 2 o 2 Concentration, causing great damage to water quality and equipment; although there is a combination of electrochemical technology, ultrasonic technology or the addition of reducing reagents to improve Fe 3+ to Fe 2+ Conversion efficiency, but reducing reagents are likely to cause secondary pollution of the water system and other issues

[0003] At present, the idea of ​​using Fenton's reagent to degrade pollutants in wastewater has attracted widespread attention in the field because of its low requirements for reducing reagents, but there are still problems such as low degradation performance and expensive reagent preparation costs.

Images