摘要
用双混型光谱仪反应器研究了苯酚在温度为 2 88～ 313K、pH =3.2～ 9.3时的臭氧(O3 )氧化反应动力学并获得了反应动力学常数 ,探讨了O3 氧化降解苯酚的机理 ,即不同 pH值时O3 氧化降解苯酚的途径及其动力学是不同的 ,在酸性及弱酸性条件下 (pH =3.2～ 6 .5 )苯酚的降解遵循O3 直接氧化机制 ,在碱性时 (pH =9.3)
The reaction kinetics of phenol ozone oxidation was investigated at temperature of 288～313 K and pH value of 3.2～9.3 by using a reactor with the Stopped - Flow Spectrometer, and the kinetic constant was obtained. Phenol degradation mechanism by ozonization was also discussed. The result showed that at varied pH value,ozonization for phenol degradation has different approaches and kinetics. In acid or weak acid (pH=3.2～6.5) solution, direct ozonization predominates over phenol degradation; while in alkaline (pH=9.3) solution, oxidation of hydroxyl radicals is dominant.
出处
《中国给水排水》
CAS
CSCD
北大核心
2002年第9期8-11,共4页
China Water & Wastewater
基金
广东省自然科学基金资助项目 (0 115 86 )
