生物酶/ACF复合材料降解甲醛实验研究

Adsorption of formaldehyde on activated carbon fiber loaded with biological enzyme

以具有很强吸附能力的含活性炭腈氯纶纤维(ACF)为载体,将生物酶负载于ACF制成复合材料。实验研究了制备生物酶的最佳条件,探讨了大豆蛋白在不同酸、碱、蛋白酶条件下的水解效果;测定了生物酶负载到ACF上对甲醛的去除率。采用SEM,VIS-7220表征了ACF负载生物酶的形貌变化及甲醛去除率等性能。结果表明,柠檬酸水解大豆蛋白后,其氨基氮含量可达5.4%;将其水解产物负载到ACF上,对甲醛去除率可达77%。

An activated carbon fiber （ACF）was used as a carrier to prepare the composite materials （biological en- zyme/ACF）by coating biological enzyme on it. The experiment studied the best method to made biological enzyme and dis- cussed the hydrolysis effect of soya protein by different acid, alkali and enzyme. And the adsorption eapability of the materi- als to formaldehyde was also studied. The structures of the materials were characterized by SEM and the removal efficiency of formaldehyde was investigated by VIS-7220. The results showed that the amino nitrogen content of soya protein can be reach to 5. 4% after being hydrolyzed by citric acid and the removal rate of formaldehyde was 77% when loading on the ACF.