[1]朱光灿,吕锡武.紫外-微臭氧工艺降解微囊藻毒素的动力学特性[J].东南大学学报(自然科学版),2005,35(3):438-441.[doi:10.3969/j.issn.1001-0505.2005.03.024]
 Zhu Guangcan,Lü Xiwu.Degradation dynamics of microcystins by UV-microO3 reactor[J].Journal of Southeast University (Natural Science Edition),2005,35(3):438-441.[doi:10.3969/j.issn.1001-0505.2005.03.024]
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紫外-微臭氧工艺降解微囊藻毒素的动力学特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第3期
页码:
438-441
栏目:
土木工程
出版日期:
2005-05-20

文章信息/Info

Title:
Degradation dynamics of microcystins by UV-microO3 reactor
作者:
朱光灿 吕锡武
东南大学土木工程学院, 南京 210096
Author(s):
Zhu Guangcan Lü Xiwu
College of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
微囊藻毒素 紫外-微臭氧工艺 一级反应 饮用水处理
Keywords:
microcystins UV-microO3 process pseudo-first order reaction drinking water treatment
分类号:
TU99.2
DOI:
10.3969/j.issn.1001-0505.2005.03.024
摘要:
研究了紫外-微臭氧工艺降解微囊藻毒素(MC)的动力学过程与特性.结果表明:MC-RR,MC-YR和MC-LR 三种MC在紫外-微臭氧反应器中的降解过程为一级动力学反应,半降解时间分别为74.5,32.2和24.2 min; 降解速率不受初始藻毒素浓度的影响,湖水中天然有机物(NOM)能捕获自由基,抑制MC的降解,葡萄糖对MC的降解没有影响; 紫外-微臭氧工艺主要通过HO·等自由基对MC侧链Adda基中不饱和共轭双键的破坏而降解MC,并使藻毒素脱毒.紫外-微臭氧工艺可用于降解饮用水中MC.
Abstract:
The degradation dynamics and character of microcystins(MC)in an UV-microO3 reactor with low concentration ozone generated from dry air by UV-radiation(λ=253.7 nm)are discussed. The results show that the photochemical degradation of MC can be characterized by pseudo-first order reaction kinetics. The reaction half lives for MC-RR, MC-YR and MC-LR are 74.5, 32.2, 24.2 min, respectively. The MC degradation is not affected by the original concentration of MC in the water, however, NOM(normal organic matter)in the water, which captured the hydroxyl radicals, would decelerate the MC degradation. In the UV-microO3 process, the decrease of MC concentration is due to the destruction of the conjugated double bond on the Adda side chain by hydroxyl radicals. The UV-microO3 process can be used for the decomposition of MC in potable water.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家高技术研究发展计划(863计划)资助项目(2002AA601130)、国家自然科学基金资助项目(59978007)、南京大学污染控制与资源化研究国家重点实验室开放基金资助项目.
作者简介: 朱光灿(1972—),男,博士,讲师,gc-zhu@seu.edu.cn; 吕锡武(联系人),男,博士,教授,博士生导师,xiwulu@public1.ptt.js.cn.
更新日期/Last Update: 2005-05-20