等离子体引发PTFE膜固定化脲酶处理废水研究
采用等离子体引发聚四氟乙烯( FE)表面固定化脲酶，并利用固定化酶膜处理含尿素废水。研究发现，固定化酶处理900 mg／L的尿素废水，30 oC以上的温度下1 h以内尿素转化率能保证在90％ 以上，并且固定化酶比活力不变。在固定化酶的稳定性测试中，1个月内固定化脲酶酶活保持不变。Urease is immobilized onto the surface of Plasma induced PTFE films, and then the waste water containing carbamide is treated with the immobilized urease. The results show that the PTFE - i - Urease films can digests 90% of carbamide in the waste water（900 mg/L）in 1 h above 30 ℃ ,and the activity of the enzyme keeps still in this stage. The stability test indicates that the activity of the immobilized urease can keep for 1 month.
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