摘要：

研究了UV/H₂O₂/改性海藻酸铁非均相催化降解苯酚时H₂O₂的投加量、溶液初始pH、苯酚初始浓度、改性海藻酸铁的含铁量等因素对苯酚降解率的影响。结果表明:该非均相体系在pH2.0～11.1范围内都能高效催化氧化降解不同浓度苯酚废水。在基准条件下,若增加改性海藻酸铁的含铁量,则在反应时间2min时,苯酚降解率可接近100%;以日光代替紫外光,苯酚降解率仍可达68.9%。

关键词: 改性海藻酸铁, 非均相UV/Fenton, 苯酚

Abstract:

Degradation of phenol has been studied by using modified ferric alginate(MFA) as heterogeneous catalyst in the presence of H2O2 and UV light. The effects of the amount of H₂O₂, initial pH of solution, the initial concentration of phenols and the ferric ion content in MFA on the degradation of phenol have been investigated in detail. The experimental results clearlyindicate that heterogeneousUV/H₂O₂/MFAsystemin awider pHrange(2.0~11.1) can efficiently catalyse, oxidize and degrade phenol with various concentration. Under standard conditions, the phenol degradation ratio can reach almost 100% after 2 min in the UV/H₂O₂ /MFA system, when the Fe³⁺ content of MFA is increased. The phenol degradation ratio can still reach 68.9% even when sun light is used instead of UV light.

Key words: modified ferric alginate, heterogeneous UV/Fenton, phenol

中图分类号: 

• X703.1