摘要：

以CoFe₂O₄改性粉末活性炭(CoFe₂O₄/PAC)作催化剂,过硫酸钾为氧化剂,对模拟罗丹明B(RhB)废水进行降解,考察各重要因素对降解率的影响。由结果可知,废水原始pH下,催化剂投加质量浓度为0.2 g/L,n(K₂S₂O₈):n(RhB)为20:1,温度为35~65℃,时间为150 min,20 mg/L的50 mL RhB溶液可完全降解。改性粉末活性炭使用4次后,仍具有较高催化活性。

关键词: 罗丹明B, 改性粉末活性炭, 过硫酸钾, 催化氧化

Abstract:

The simulated Rhodamine B(RhB) wastewater has been degraded by using CoFe₂O₄ modified & powdered active carbon(CoFe₂O₄/PAC) as catalyst and K₂S₂O₈ as oxidant. The influences of various important factors on the degradation rate of RhB are investigated. The results show that RhB could be removed in 150 min under initial pH condition, when catalyst dosing mass concentration is 0.2 g/L, n(K₂S₂O₈):n(RhB)=20:1, and temperature range 35-65℃, 50 mL of RhB solution(20 mg/L) can completely be degraded. After the modified & powdered active carbon has been used repeatedly 4 times, it still has high activity.

Key words: Rhodamine B, modified &, powdered active carbon, potassium persulfate, catalytic oxidation

中图分类号: 

• X703