A kind of electro-fenton water treatment method based on iron-containing clay mineral supported palladium catalyst
A clay mineral and palladium catalyst technology, applied in the field of water treatment, can solve the problems of low efficiency, inability to use on a large scale, and high cost, and achieve the effects of high treatment efficiency, environmental friendliness of treatment efficiency, and avoidance of dependence.
Active Publication Date: 2020-05-15
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology
Therefore, the electro-Fenton method has the following problems in practical application: ①The mechanical properties of highly active porous cathode materials are poor, and it is still difficult to form large-area materials, which cannot be used on a large scale, and the cost is high; ②Added ferrous ions (or iron-containing minerals) after oxidation, the efficiency of regenerating ferrous iron from ferric iron is low, and iron-containing solid waste will be produced after treatment; ③Since the two catalytic reactions are carried out in different positions in space, The final production of hydroxyl radicals is not efficient enough
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[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0035] Embodiments of the present invention provide a method for electro-Fenton water treatment based on iron-containing clay mineral-supported palladium catalysts, wherein palladium is loaded onto iron-containing clay minerals through a reduction reaction to obtain a palladium-iron integrated catalyst, and the palladium-iron integrated catalyst Added to the electric Fenton water treatment device to catalyze the generation of hydroxyl radicals, and then degrade the organic pollutants in the water.
[0036] Please refer to figure 1 and image 3 , including the following steps:
[0037] S1. Select and pretreat the iron-containing clay minerals; the iron-containing clay minerals come from iron layered silicate minerals such as nontronite, montmorillonite ...
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The invention discloses an electro-Fenton water treatment method based on an iron-containing clay mineral supported palladium catalyst. Palladium is supported on iron-containing clay mineral through areduction reaction, a palladium-iron integrated catalyst is obtained, the palladium-iron integrated catalyst is added to an electro-Fenton water treatment device to perform catalysis, hydroxyl free radicals are produced, and organic pollutants in water are further decomposed. The coupling function of iron and palladium in the clay mineral is fully played, the treatment efficiency is high and treatment is environmentally friendly during electro-Fenton water treatment, and the electro-Fenton water treatment method can have economic benefits and social benefits in the field of treatment of industrial wastewater and underground water.
Description
technical field [0001] The invention relates to a water treatment method, in particular to an electric Fenton water treatment method based on iron-containing clay mineral loaded palladium catalyst. Background technique [0002] At present, the situation of industrial wastewater discharge and groundwater pollution in my country is still very severe, and the pollution caused by toxic organic substances is very prominent. Therefore, it is of great significance to treat organically polluted wastewater and groundwater. Advanced oxidation technologies, such as Fenton oxidation, photocatalytic oxidation, and electrochemical oxidation, are currently effective methods for treating toxic organic pollutants in water bodies. In contrast, electrochemical oxidation has attracted special attention due to its advantages of good controllability. Electrochemical oxidation includes direct oxidation and indirect oxidation. Direct oxidation uses highly active anode materials, such as boron-dop...
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IPC IPC(8): C02F1/467B01J23/89B01J37/16
Inventor 袁松虎谢雯静刘细祥
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)