权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of new water treatment of compound pollutants by photo chemical reaction

光化学反应复合污染物水处理新方法的研制

基本信息

批准号：
06555162
负责人：
OHGAKI Shin-ichiro
金额：
$ 8.96万
依托单位：
UNIVERSITY OF TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555162/
关键词：
Medium pressure UV lamp Low pressure UV lamp Organohalogenides Photocatalysis Titanium dioxide Aromatic compounds Agricultural chemicals 紫外線ランプ光化学水処理チオベンカルブフミン質

项目摘要

In this research, photolysis of some kinds of organohalogenides and agricultural chemicals were investigated as new water treatment. A xenon lamp was used for photocatalysis and medium and low pressure Ultraviolet lamp were used for single UV treatment.Some results were gotten as follows.1.Single UV treatment using two types of lampsOrganohalogenides which were used in this research can be decomposed by single treatment of both types of UV lamps, and the reactions conform the first order reaction. By germicidal intensity which was calculated using a bioindicator, the decomposition ratio by different types of UV lamp can be compared. According to this methods, the compounds which have carbon double bond (C=C) was decomposed by medium pressure UV lamp faster than low pressure lamp. The compounds which have carbon bomine bond (C-Br) was decomposed easily by both lamps.2.Photocatalysis of chemical compounds in aqueous TiO2 suspensionsphotocatalitic degradation of the some kinds of aromatic compounds such as Thiobencarb, monochlorobenzene was studied in aqueous TiO2 suspensions with a simulated sunlight, xenon light. All these compounds were mineralized completely to carbon dioxide, and during the time-course of TOC,pH and Anion were consistent. There were clear differences in the pH change and the time required for disappearance and mineralization between these compounds.

在本研究中，研究了某些有机卤化物和农用化学品的光解作为新的水处理方法。采用氙灯进行光催化，中低压紫外线灯进行单次紫外处理，得到了以下一些结果： 1.两种类型的灯进行单次紫外处理本研究中使用的有机卤化物可以通过两种类型的紫外灯的单一处理来分解，并且反应符合一级反应。通过使用生物指示剂计算出的杀菌强度，可以比较不同类型的紫外线灯的分解率。根据该方法，中压紫外灯比低压灯更快地分解具有碳双键(C=C)的化合物。两种灯都很容易分解含有碳胺键(C-Br)的化合物。2.TiO2水悬浮液中化合物的光催化作用研究了在模拟太阳光、氙灯下TiO2水悬浮液中对硫苯威、一氯苯等芳香族化合物的光催化降解作用。所有这些化合物都完全矿化为二氧化碳，并且在整个过程中TOC、pH和阴离子保持一致。这些化合物之间的 pH 变化以及消失和矿化所需的时间存在明显差异。