| 摘要 |
Provided is a method of efficiently removing triuret from urea water, a method of producing urea water of high purity and a method of collecting triuret from aqueous solution. Thus, a method of producing urea water comprises a step of preparing urea water by dissolving urea water in water, a step of making the urea water cloudy in a temperature range of -5°C or more and 17°C or less and a step of passing the urea water in a cloudy state through an ion exchange resin. Moreover, a method of removing triuret from urea water comprises a step of precipitating the triuret by cooling the urea water including urea and triuret as impurity in a temperature range of -5°C or more and 17°C or less and a step of passing the urea water in the temperature range through an ion exchange resin and capturing the precipitated triuret within the ion exchange resin. |
