GOALI: Stimulated Raman microscopy for sensitive real-time detection of membrane fouling

GOALI：受激拉曼显微镜用于灵敏地实时检测膜污染

基本信息

批准号：
1826542
负责人：
Juliet Gopinath
金额：
$ 36.1万
依托单位：
University of Colorado at Boulder
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1826542&HistoricalAwards=false
关键词：
GOALI Stimulated Raman microscopy sensitive

项目摘要

A membrane provides a selective barrier or filter, allowing certain compounds to pass through but preventing others. Membranes separate salts from sea water to produce drinking water. In emissions control, membranes prevent pollutants from being released into the environment. In landfills, membranes stop contaminants from leaching into the groundwater. In the process of filtering contaminants, however, the retention of certain compounds can lead to fouling. Fouling is a serious and ubiquitous problem in purification processes that rely on membranes, as it decreases membrane performance, increases energy consumption, and can lead to permanent damage of the membrane. Combined, these effects increase the cost of membrane operation, and thus, fouling mitigation is of great interest for industrial membrane processes. A key part of the mitigation strategy is detection, in order to proactively prevent fouling before it proceeds unchecked. Existing detection techniques rely on bulk measurements, such as pressure drop across the membrane, which can give an early warning of fouling. However, these bulk techniques do not provide chemical specific information on what leads to fouling. It is anticipated that chemical identification could facilitate molecular-level design of membranes that are resistant to fouling. The research will demonstrate an innovative method to detect membrane fouling under realistic operating conditions. The work will demonstrate an effective, high-resolution, label-free, non-destructive, and non-invasive real-time method for fouling detection under realistic operating conditions. A number of fundamental questions will be answered, including the sensitivity of the proposed optical detection method to early-stage reverse-osmosis, scaling initiation and growth as manifested by an increase in lateral and thickness dimensions. The research is an interdisciplinary topic spanning physics, materials science and engineering. If successful, the project will enable higher efficiency and lower-cost operation of reverse-osmosis desalination systems; and will provide similar significant benefits for other membrane-based separation applications. The project will provide research opportunities for graduate and undergraduate students, as well as dissemination to under-represented students at the college and K-12 level through involvement with public scientific demonstrations, laboratory tours, K-12 courses, and involvement with the Women in Electrical, Computer and Energy Engineering group.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

膜提供选择性屏障或过滤器，从而使某些化合物通过但可以防止其他化合物。膜与海水分开盐，以产生饮用水。在排放控制中，膜阻止污染物被释放到环境中。在垃圾填埋场中，膜阻止污染物浸入地下水。然而，在过滤污染物的过程中，某些化合物的保留可能导致结垢。污垢是依赖膜的纯化过程中的一个严重且普遍存在的问题，因为它会降低膜性能，增加能耗，并可能导致膜的永久损害。结合这些影响增加了膜操作的成本，因此缓解污染对工业膜过程引起了极大的兴趣。缓解策略的一个关键部分是检测，以便在未经检查之前积极防止污染。现有的检测技术依赖于散装测量值，例如跨膜的压降，这可以发出结垢的预警。但是，这些大量技术并未提供有关导致结垢的内容的特定化学信息。预计化学鉴定可以促进抗污垢的膜的分子级设计。该研究将展示一种创新方法，以检测在现实的工作条件下膜结垢。这项工作将证明一种有效的，高分辨率的，无标签的，无损和无创的实时方法，用于在现实的工作条件下进行污染检测。将回答许多基本问题，包括提出的光学检测方法对早期反向渗透的敏感性，缩放起始和生长的敏感性，这表现为横向和厚度尺寸的增加。这项研究是跨学科的主题，涵盖物理，材料科学和工程。如果成功，该项目将使反向溶解系统的更高效率和低成本运行；并将为其他基于膜的分离应用提供类似的重大好处。该项目将通过参与公共科学示范，实验室旅行，K-112课程，以及与妇女参与电气，计算机和能源工程集团的妇女的参与，为妇女参与电气，计算机和能源奖，该奖项反映了NSF的知识范围，该奖项反映了NSF的范围，该妇女通过智力的范围来评估，该项目将为研究生和K-12级别提供研究机会，并传播给大学和K-12的代表性不足的学生。影响审查标准。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Raman spectroscopy for real-time concurrent detection of multiple scalants on RO membranes

DOI：
10.1016/j.desal.2023.116851
发表时间：
2023-07
期刊：
Desalination
影响因子：
9.9
作者：
Danielle J. Park;O. Supekar;V. Bright;A. Greenberg;J. Gopinath
通讯作者：
Danielle J. Park;O. Supekar;V. Bright;A. Greenberg;J. Gopinath

Narrow linewidth picosecond source at 760 nm generating 50 nJ pulses using four-wave mixing

760 nm 窄线宽皮秒源使用四波混频产生 50 nJ 脉冲

DOI：
10.1364/cleo_si.2022.sf4h.1
发表时间：
2022
期刊：
Conference on Lasers and Electro-Optics (CLEO
影响因子：
0
作者：
Supekar, Omkar D.;Simmons, Y. Lange;Bright, Victor M.;Gopinath, Juliet T.
通讯作者：
Gopinath, Juliet T.

In-situ monitoring of calcium carbonate scale progression on reverse osmosis membranes using Raman spectroscopy

使用拉曼光谱原位监测反渗透膜上碳酸钙结垢的进展

DOI：
10.5004/dwt.2022.28883
发表时间：
2022
期刊：
DESALINATION AND WATER TREATMENT
影响因子：
1.1
作者：
Park, Danielle J.;Supekar, Omkar D.;Greenberg, Alan R.;Gopinath, Juliet T.;Bright, Victor M.
通讯作者：
Bright, Victor M.

Real-time monitoring of calcium sulfate scale removal from RO desalination membranes using Raman spectroscopy