Preparation method of magnetic nano-fe3o4 biocatalysis and its application in the treatment of uranium-containing wastewater

A magnetic nano, biocatalytic technology, applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as threats to human living environment, environmental pollution, etc., and achieve a very good adsorption effect , Strong chemical stability, the effect achieved by heating conditions
CN103877927BInactive Publication Date: 2015-08-19NANHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANHUA UNIV
Publication Date
2015-08-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an ecological and environment-friendly new method for preparing magnetic nano Fe3O4 particles by biological catalysis, and application of the particles to treatment of uranium-containing wastewater. The method comprises the following concrete steps: (1) culturing and domesticating thiobacillus ferrooxidans; (2) preparing bio-polymeric ferric sulfate; (3) synthesizing the magnetic nano Fe3O4 particles; (4) performing a test of adsorbing uranium in the uranium-containing wastewater by the magnetic nano Fe3O4 particles. The obtained magnetic nano Fe3O4 particles are simple in preparation synthesis route, mild in reaction condition and easy to operate; a biological catalysis oxidant is used for replacing a conventional chemical oxidant (nitrite), so that cancerogenic substances are prevented from being discharged to the environment and the environment-friendly effect is really achieved. Meanwhile, the obtained magnetic nano Fe3O4 particles can reduce the content of uranium in the low-concentration uranium-containing wastewater with the concentration of 0.45-0.50mg / L by more than 90% and have very important practical meaning in aspects of uranium-containing wastewater treatment, uranium recovery and the like in uranium mining and metallurgy.
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Description

technical field

[0001] The invention belongs to the field of resource utilization and environmental protection, in particular to the preparation of magnetic nano-Fe by biocatalysis 3 o 4 Particles and their application in the treatment of uranium-containing wastewater. Background technique

[0002] As the main fuel for nuclear power, uranium is also an urgently needed strategic material for national defense construction. With the continuous and safe development of nuclear power and the continuous transformation and upgrading of national defense construction (nuclear military industry), my country's annual demand for natural uranium is increasing year by year, and uranium supply will still face enormous pressure. In order to meet the increasing demand for uranium resources for military and civilian purposes, it is necessary to increase the mining and processing of uranium resources.

[0003] However, with the current process conditions, technologies and methods, the low co...

Claims

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