Capture of phosphates in surface water by TiO2 nanoparticles under UV irradiation

被引：0

作者：

Hongyong Xie ^{[1
]}

Qi Zheng ^{[2
]}

Shanzhu Wang ^{[2
]}

Changwen Ma ^{[1
]}

Guilan Gao ^{[1
]}

Naici Bing ^{[1
]}

Zhiguo Sun ^{[1
]}

机构：

[1] School of Urban Development and Environmental Engineering,Shanghai Second Polytechnic University

[2] Shanghai Pudong Hydrology and Water Resource Administration

来源：

Particuology | 2014年 / 14卷 / 03期

关键词：

Orthophosphates; Total phosphorus; Surface water; TiO2; nanoparticles; UV irradiation;

D O I：

暂无

中图分类号：

X52 [水体污染及其防治];

学科分类号：

0815 ;

摘要：

The capture of orthophosphates and total phosphorus from the Pudong Canal river in the Pudong District of Shanghai by TiOnanoparticles is studied using a rotating photoreactor and the nano-TiOphotocatalyst Degussa P25.The effects of UV irradiation intensity in a range of 20-74 mW/cm2.the loading of the TiOnanoparticles in a range of 0.05-0.1 g/L,irradiation time up to 4h,and pH values in a range of 2-10.5 on the capture efficiency are investigated.The results show that the capture of orthophosphates and total P are significantly enhanced by UV irradiation;at a loading of 0.1 g/L and an irradiation intensity above36 mW/cm2,orthophosphates and total phosphorus are rapidly captured by TiOnanoparticles,causing an observed reduction from 0.4mg/L down to 0.02 mg/L.pH values in a range of 2-10.5 have little effect on the capture efficiency of orthophosphates and total phosphorus.

引用

页码：98 / 102

页数：5

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