Method for treating acid uranium-bearing wastewater by utilizing modified chitosan adsorbents

A chitosan and adsorbent technology, applied in the field of uranium adsorption in acidic uranium-containing wastewater, can solve the problems of high operating costs and raw material costs, complex uranium-containing wastewater treatment process, etc., and achieve high removal rate and good adsorption effect
CN102863045AInactive Publication Date: 2013-01-09BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
Publication Date
2013-01-09
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention provides a method for treating acid uranium-bearing wastewater by utilizing modified chitosan adsorbents. Aimed at problems of complicated process, high operation cost and raw material cost and the like of uranium-bearing wastewater treatment in the uranium ore metallurgy process, the modified chitosan adsorbents are utilized for treating the acid uranium-bearing wastewater. The modified chitosan adsorbents include one or more of triethylene tetramine, ethidene diamine, diethylene triamine or tetraethylene pentamine modified chitosan adsorbents. The research shows that the modified chitosan adsorbents have good absorption effects on uranium and a high removing rate for uranium in low-concentration uranium-bearing wastewater, and the removing rate is larger than 95%.
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Description

technical field

[0001] The invention relates to a technology for adsorbing uranium in acidic uranium-containing wastewater, in particular to a method for treating acidic uranium-containing wastewater by using a modified chitosan adsorbent. Background technique

[0002] Biosorption of heavy metals is an emerging research field. In the past ten years, great progress has been made in the research of biosorption of heavy metals. A large number of studies have shown that some microorganisms such as bacteria, fungi, algae and biopolymers have strong Strong adsorption capacity. Biosorption refers to the adsorption of heavy metal ions by biological materials through a series of biochemical actions, including complexation, chelation, ion exchange, transformation, absorption, and inorganic microprecipitation. Compared with other similar technologies (such as chemical precipitation, activated carbon adsorption, ion exchange, electrodialysis, etc.) as a new technology to recover heavy ...

Claims

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