CAJ | 학술논문

研究应用酸碱处理,硫酸铁浸泡等方法来改性天然沸石,探讨其除氟性能,并得到了最佳的改性途径:40～80目斜发沸石用去离子水冲洗、烘干,然后在1.38 mol/L硫酸溶液中搅拌、浸泡24 h,洗净烘干,最后在Fe~(3+)浓度为1.5 mol/L的硫酸铁溶液中煮沸、搅拌2 h.采用静态和动态相结合的方法确定了影响沸石除氟的多种因素,并对除氟过程的吸附模式、热力学性质进行了研究.
연구응용산감처리,류산철침포등방법래개성천연비석,탐토기제불성능,병득도료최가적개성도경:40～80목사발비석용거리자수충세、홍간,연후재1.38 mol/L류산용액중교반、침포24 h,세정홍간,최후재Fe~(3+)농도위1.5 mol/L적류산철용액중자비、교반2 h.채용정태화동태상결합적방법학정료영향비석제불적다충인소,병대제불과정적흡부모식、열역학성질진행료연구.
The application of the methods, such as acidic and alkali treatment,soaking in FeSO_4 etc. to the modification of natural zeolite has been studied, and its defluorination capacity has been discussed. The optimal modifying approach has been obtained as follows: Firstly, clinoptilolite of 40-80 meshes is washed by deionized water, and dried. Secondly, it is stirred in 1.38 mol/L H_2SO_4 solution and dipped for 24 h. The treated zeolite is then washed and dried. At the end, it is boiled with 1.5 mol/L of FeSO_4 solution under the condition of stirring for 2 h. The influential factors on defluorization is defined by the combination of static method with dynamic method and the adsorption mode and thermodynamic character during the defluorization process is studied.