Soonchunhyang University Industry Academy Cooperation Foundation

Soonchunyang University Industry Academy Cooperation Foundation

In Hyoung Rhee

Hyun Jun Jung

Byung Gi Park

Provided is a method of manufacturing nanoparticles using an ion exchange resin and a liquid reducing process. The method includes (a) capturing a nanoparticle precursor from a solution in which impurities are mixed using an ion exchange resin, (b) washing and layer-separating the breakthrough ion exchange resin, (c) separating only the ion exchange resin in which the nanoparticle precursor is captured from the layer-separated ion exchange resin, and (d) putting the separated ion exchange resin into a mixture solution in which a reducing agent and a dispersing agent are mixed.

Method of manufacturing nanoparticles using ion exchange resin and liquid reducing process

Provided is a method for recovering high-concentration and high-purity amine from amine-containing waste water generated from nuclear power plants and thermal power plants. The method includes: capturing amine and concentrating waste water using a cation exchange resin; separating amine from the concentrated amine-containing waste water; and carrying out further separation of amine via distillation. The method may be applied to treat amine, which causes an increase in biochemical oxygen demand (BOD) and total nitrogen concentration, drastically at the time of its generation from waste water of nuclear power plants and thermal power plants. In this manner, the method may prevent an increase in load of existing waste water treating plants and avoid a need for modifying the equipment in the existing plants. In addition, the method disclosed herein may allow recovery and reutilization of amine, injected continuously to prevent corrosion of water/vapor circulation systems of nuclear power plants and thermal power plants, thereby improving the cost-efficiency in such power plants.

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Seoul, South Korea

In Hyoung Rhee