Three-element copolymerized hydrogel, preparation method thereof and application thereof in water treatment

A hydrogel and copolymerization technology, which is applied in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as the decrease in the purity of high molecular polymers, and achieve low production cost, high preparation Simple method and high adsorption capacity
CN102199246AInactive Publication Date: 2011-09-28NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV
Publication Date
2011-09-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a three-element copolymerized hydrogel and a preparation method thereof. The preparation method is simple, and easy to implement; and the obtained three-element copolymerized hydrogel can effectively adsorb Cr3+, Cd2+, Cu2+ and Pb2+ ions. The preparation method for the three-element copolymerized hydrogel comprises the following step of: performing radiation polymerization on hydroxyethyl acrylate, n-ethylene dimethacrylate and 2-acrylamide-2-methylpropanesulfonic acid, wherein the molar ratio of the hydroxyethyl acrylate to the n-ethylene dimethacrylate to the 2-acrylamide-2-methylpropanesulfonic acid is (1-2):(0.1-0.6):(0.1-0.7); the n-ethylene dimethacrylate monomer is one of 2G, 4G, 9G and 14G; the radiation dosage of radiation polymerization is 1*103-1*106Gy;and the polymerization temperature is between -63 and -95DEG C. The invention has the advantages that: the three-element copolymerized hydrogel can effectively adsorb and chelate heavy metal ions; and the preparation method is simple, and easy to implement.
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Description

technical field

[0001] The invention relates to a ternary copolymerized hydrogel, its preparation method and its application in water treatment. Background technique

[0002] With the advancement of my country's urban modernization process, the amount of urban sewage is increasing day by day, and industrial and agricultural wastewater, urban domestic sewage and various mining wastewater contain a large amount of heavy metals. For the soil, most heavy metals are relatively stable in the soil and difficult to move out of the soil, which seriously affects the physical, chemical and biological characteristics of the soil. The structure of soil microbial community changes accordingly, and the stability of soil ecological structure and function is threatened, causing pollution of crops, agricultural products and groundwater, and even endangering human health through the food chain. According to statistics, nearly 20 million hm 2 The soil is polluted by heavy metals, accounting f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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