EAPSI: Disinfection Properties of Visible Light Active Iron-containing Silicate Glass

EAPSI：可见光活性含铁硅酸盐玻璃的消毒性能

• 批准号: 1714018
• 负责人: Kamrie Sarnosky
• 金额: $ 0.54万
• 依托单位: Sarnosky Kamrie M
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-06-01 至 2018-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1714018&HistoricalAwards=false
• 关键词: EAPSI; Disinfection; Properties; Visible; Light

In order to address current issues in global water quality and sustainability, new environmentally friendly water disinfection technologies must be developed. Currently, chemicals commonly used to disinfect wastewater, such as chlorine, can react with other molecules in the water to create potentially harmful disinfection byproducts (DBPs). New technologies using ultraviolet (UV) light and semiconducting materials may be a byproduct-free alternative to chemical disinfection to inactivate pathogenic bacteria. However, solar light has less than 5% UV light radiation and artificial source of UV-light makes UV technology expensive. This project will test the disinfecting capabilities of visible light active iron-containing silicate glass. The research will be conducted in collaboration with Dr. Shiro Kubuki, of Tokyo Metropolitan University (TMU) in Tokyo, Japan, who has developed an iron-containing silicate glass that can be easily activated by visible light. This specific type of glass can be prepared from recycled glass bottles, and uses visible light, rather than UV-light, making it a cost-effective, byproduct-free alternative to chemical disinfection. Although it has been established that some semiconductors, such as titanium dioxide (TiO2), can effectively inactivate pathogenic bacteria, they require ultra-violet (UV) light to be effective. In this project, visible light active and iron-containing silicate glass will be used. Our hypothesis involves the use of iron-containing silicate glass made from recycled materials to eliminate pathogenic microorganisms without the harmful by-products produced by chlorine disinfectants and without the need for expensive and lengthy UV-light treatments. This study aims to: a) test the capability of iron-containing silicate glass to effectively inactivate pathogenic indicator organisms (Escherichia coli) by visible light-induced photocatalytic reaction and (b) explore the potential of using iron-containing silicate glass as an affordable "green" catalyst for water disinfection purposes.This award is under the East Asia and Pacific Summer Institutes program support for a U.S. graduate student and is jointly funded by NSF and the Japan Society for the Promotion of Science.

为了解决当前全球水质和可持续性问题，必须开发新的环境友好型水消毒技术。目前，通常用于消毒废水的化学物质，如氯，可以与水中的其他分子反应，产生潜在有害的消毒副产物（DBP）。使用紫外线（UV）和半导体材料的新技术可能是一种无副产品的化学消毒替代品，以消灭病原菌。然而，太阳光具有小于5%的UV光辐射，并且UV光的人工源使得UV技术昂贵。本项目将测试可见光活性含铁硅酸盐玻璃的消毒能力。这项研究将与日本东京都立大学（TMU）的Shiro Kubuki博士合作进行，他开发了一种含铁的硅酸盐玻璃，可以很容易地被可见光激活。这种特殊类型的玻璃可以从回收的玻璃瓶中制备，并使用可见光，而不是紫外线，使其成为化学消毒的成本效益高，无副产品的替代品。虽然已经确定一些半导体，如二氧化钛（TiO 2），可以有效地杀灭病原菌，但它们需要紫外线（UV）光才能有效。本项目采用可见光活性含铁硅酸盐玻璃。我们的假设涉及使用由回收材料制成的含铁硅酸盐玻璃来消除病原微生物，而不需要氯消毒剂产生的有害副产品，也不需要昂贵而漫长的紫外线处理。这项研究的目的是：a）测试含铁硅酸盐玻璃有效杀灭病原指示生物的能力（大肠杆菌）的可见光诱导光催化反应和（B）探索使用含铁硅酸盐玻璃作为负担得起的“绿色”该奖项是在东亚和太平洋夏季研究所项目下为一名美国研究生提供的支持，由以下机构共同资助：NSF和日本科学促进会。