| 王小娜,张兴文,王栋.高铁酸钾氧化降解卡马西平实验研究[J].,2022,62(2):123-133 |
| 高铁酸钾氧化降解卡马西平实验研究 |
| Experimental study of oxidative degradation of carbamazepine by potassium ferrate |
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| DOI：10.7511/dllgxb202202003 |
| 中文关键词:高铁酸钾卡马西平高级氧化响应面法降解产物 |
| 英文关键词:potassium ferratecarbamazepineadvanced oxidationresponse surface methoddegradation products |
| 基金项目:国家自然科学基金资助项目(51908529)；哈尔滨工业大学城市水资源与水环境国家重点实验室开放基金资助项目(ES201605). |
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| 中文摘要: |
| 以高铁酸钾作为氧化剂对卡马西平(CBZ)进行氧化降解，分别考察了高铁酸钾投加量、CBZ初始浓度、温度和pH对高铁酸钾降解CBZ的影响，并进行了反应动力学计算．采用响应面法拟合了高铁酸钾对CBZ降解率与反应条件之间的回归方程．实验结果表明，高铁酸钾降解CBZ的反应符合二级反应动力学规律．增加高铁酸钾浓度可以有效提高CBZ降解率．提高CBZ初始浓度增加了氧化降解的CBZ总量，但降低了CBZ降解率．升高温度促进CBZ降解．pH是高铁酸钾降解CBZ的关键因素，pH低于7.0时CBZ降解的初始反应速率较高，但降解率比较低；pH高于7.0时CBZ降解的初始反应速率低，但降解率比较高．高铁酸钾降解CBZ的主要反应途径为高铁酸根对烯烃双键的氧化． |
| 英文摘要: |
| Potassium ferrate was used to oxidize carbamazepine (CBZ), and the influences of potassium ferrate dosage, initial CBZ concentration, temperature and pH on the degradation of CBZ by potassium ferrate were investigated respectively and the reaction kinetics calculation was conducted. The response surface method was used to fit the regression equation between the degradation ratio of CBZ by potassium ferrate and the reaction conditions. The results indicate that the degradation of CBZ by potassium ferrate is suitable for the second-order reaction kinetics. The CBZ degradation ratio increases at higher potassium ferrate concentration. The CBZ degradation ratio decreases at higher initial CBZ concentration, while the total amount of the degraded CBZ increases apparently. CBZ degradation can be promoted by increasing the temperature. pH is the key factor for CBZ degradation. The initial reaction rate of CBZ degradation is pretty high with pH below 7.0, while the CBZ degradation ratio turns relatively low, and vice versa. The CBZ degradation by potassium ferrate proceeds mainly through the oxidation of olefin double bonds by ferrate. |
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