Field testing of low-cost titania-based photocatalysts for enhanced solar disinfection (SODIS) in rural India,Environmental Science: Water Research & Technology

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Field testing of low-cost titania-based photocatalysts for enhanced solar disinfection (SODIS) in rural India
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2020/01/20 , DOI: 10.1039/c9ew01023h
Victoria Porley _{1,

2,

3,

4,

5} , Efthalia Chatzisymeon _{4,

5,

6,

7,

8} , Bhim Charan Meikap _{9,

10,

11,

12} , Somnath Ghosal _{10,

11,

12,

13} , Neil Robertson _{1,

2,

3,

4,

5}

Affiliation

To widen access to safe potable water in rural areas, many novel photocatalysts have been developed and presented in the literature, with the potential to be used in conjunction with simple solar disinfection (SODIS) techniques, showing successful removal of a range of contaminants. However, it is often the case that investigations into new photocatalytic systems are limited to laboratory tests, which are generally conducted under idealised conditions that do not take into account many practical limitations of real-world conditions. To address this need, we have conducted tests under sunlight using real water sources from rural villages in India to verify the results of previous successful laboratory tests on a novel photocatalyst. It was found that SODIS can be significantly enhanced with the addition of photocatalyst, with an enhanced titania-based material showing better performance under solar irradiation relative to titania alone, consistent with our lab studies. The study also highlights areas for further optimisation, desirable to achieve before the technology can be most-effectively implemented.

中文翻译：

低成本二氧化钛基光催化剂在印度农村地区的现场测试，用于增强的太阳能消毒（SODIS）

为了扩大农村地区安全饮用水的获取，已开发出许多新颖的光催化剂，并在文献中进行了介绍，它们有可能与简单的太阳能消毒（SODIS）技术结合使用，表明已成功去除了一系列污染物。但是，通常情况下，对新的光催化系统的研究仅限于实验室测试，而实验室测试通常是在理想条件下进行的，没有考虑到现实世界条件的许多实际限制。为了满足这一需求，我们使用来自印度乡村的真实水源在阳光下进行了测试，以验证以前在新型光催化剂上成功进行的实验室测试的结果。发现添加光催化剂可以显着增强SODIS，与增强型的二氧化钛基材料相比，单独使用二氧化钛在阳光照射下表现出更好的性能，这与我们的实验室研究一致。该研究还强调了需要进一步优化的领域，这是在最有效地实施该技术之前需要实现的。

更新日期：2020-03-05

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