Development and assessment of photo-catalytic membranes for water purification using solar radiation
Development and assessment of photo-catalytic membranes for water purification using solar radiation
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DOI：
10.1016/j.apsusc.2017.10.027
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发表时间：
2018-03
影响因子：
6.7
通讯作者：
Michael Coto;S. Troughton;J. Duan;R. Kumar;T. Clyne
中科院分区：
文献类型：
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作者：
Michael Coto;S. Troughton;J. Duan;R. Kumar;T. Clyne
本文描述了一种用于表征用于水净化的膜的性能的新装置。它包括一个循环系统，持续监测水中一种代表性污染物（亚甲基蓝）的浓度。压力、流量和温度也会被测量。结果，以降低污染物浓度的速率常数的形式，提出了三种不同类型的膜，所有这些膜都含有相对较高的二氧化钛表面积，并具有一定范围内的渗透性值，使其适合这种类型的处理（~ 10−11m2）。这些结果在膜的表面积和可能的水流特性方面是合理的。由此得出结论，其中所有的二氧化钛表面都具有相似的光催化氧化污染物的效率，但在水暴露于这些表面的方式上存在显着差异，因此在污染物氧化速率上存在显着差异。这些要点与为此目的而进行的膜设计优化有关。
This paper describes a novel set-up for characterization of the performance of membranes designed for purification of water. It involves a recirculatory system, with continuous monitoring of the concentration in the water of a representative pollutant (Methylene Blue). Pressures, flow rates and temperatures are also measured. Results, in the form of rate constants for reduction in pollutant concentration, are presented for three different types of membrane, all of which incorporate relatively high surface areas of titania and have permeability values in a range making them suitable for this type of processing (∼10−11m2). These results are rationalized in terms of the surface areas of the membranes, and the likely water flow characteristics within them. It is concluded that all of the titania surfaces within them have similar efficiencies for photo-catalytic oxidation of pollutants, but there are significant differences in the ways that the water is exposed to these surfaces, and hence in the pollutant oxidation rates. These points are relevant to the optimization of membrane design for this purpose.