GOALI: SusChEM: Experimental Investigation of Chloramine and Persulfate Aqueous Photochemistry and Development of Efficient Ultraviolet-Based Water Treatment

目标：SusChEM：氯胺和过硫酸盐水光化学的实验研究以及高效紫外线水处理的开发

• 批准号: 1611306
• 负责人: Haizhou Liu
• 金额: $ 30万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1611306&HistoricalAwards=false
• 关键词: GOALI; SusChEM; Experimental; Investigation; Chloramine

In this project funded by the Environmental Chemical Sciences Program in the Chemistry Division at the National Science Foundation, Professor Haizhou Liu of the University of California, Riverside (UCR) and Dr. Ken Ishida of Orange County Water District (OCWD) are investigating the ultraviolet (UV) light-driven advanced oxidation process (AOP) of trace organic contaminants in wastewater. The AOP process uses two oxidants: chloramine and persulfate to remove contamination in the water. The underlying hypothesis of this research is that the two oxidants produce unique reactive species under UV light. The solution chemical conditions (e.g., pH, chloride and bicarbonate concentrations) are optimized to maximize contaminant degradation and minimize the energy required by the UV-based water treatment system. This project promotes university-industry partnerships in a severely water-stressed region (Southwest U.S.). The collaboration serves as a model to develop efficient, cost-effective and sustainable water reuse technologies, helps the water industry with smart infrastructure, prepares our society for water sustainability, and ultimately protects public health. This research enhances U.S. technological competitiveness in the water sector by accelerating new knowledge transfer between the university and industry.The research goal fits one of the National Academy of Engineering's Grand Challenges- provide access to clean water. The multi-tool research strategy advances our understanding of photochemistry and fate of trace organic contaminants in wastewater effluent, and promotes the application of efficient oxidants in UV-based water reuse technologies. A transformative quality of this project derives from the combination of computational kinetics modeling, lab-scale experiments, and pilot-scale investigation at the OCWD's advanced water purification facility. Understanding of the UV/AOP is mostly limited to hydroxyl radical-dominated systems. Awareness of the reactivities of amine, sulfate, and halide reactive species is confined to atmospheric aerosol, estuary or groundwater remediation systems, not engineered UV processes. This study represents research that challenges conventional wisdom surrounding radical chemistry in UV/AOP. The investigators recruit one graduate student and minority undergraduate students from UCR to work in the UCR lab and at OCWD on this research. Further, Drs. Liu and Ishida and the students introduce industrial professions to local high school students through lectures and interactive events at water treatment facilities.

在国家科学基金会化学部的环境化学科学计划资助的项目中，加利福尼亚大学河畔大学，河滨大学（UCR）和奥兰治县水区（OCWD）的Ken Ishida博士正在研究Ultraviolet（UV）光驱动的高级氧化过程（AOP），该过程正在研究Trace Organitic portiminic portiminic pornationalsic portainecteminants wasteminans of wastewew。 AOP工艺使用两种氧化剂：氯胺和孔硫酸盐来清除水中的污染。这项研究的基本假设是，两种氧化剂在紫外线下产生独特的反应物质。 优化溶液化学条件（例如pH，氯化物和碳酸氢盐浓度），以最大程度地降低污染物降解并最大程度地减少紫外线水处理系统所需的能量。该项目促进了严重水应力地区（美国西南部）的大学 - 行业伙伴关系。该合作是开发高效，成本效益和可持续的水再利用技术的模型，帮助水工业通过智能基础设施，为我们的水可持续发展社会做好准备，并最终保护公共卫生。这项研究通过加速大学与行业之间的新知识转移来增强美国在水部门的技术竞争力。研究目标符合美国国家工程学院的盛大挑战之一 - 提供清洁水的机会。多工具研究策略促进了我们对废水中有机污染物的光化学和命运的理解，并促进了有效的氧化剂在基于紫外线的水再利用技术中的应用。该项目的变革性质量来自OCWD高级水净化设施的计算动力学建模，实验室规模实验和试验规模研究的组合。对紫外线/AOP的理解主要限于羟基自由基主导的系统。对胺，硫酸盐和卤化物反应性物种的反应性的认识仅限于大气气溶胶，河口或地下水补救系统，而不是设计的紫外线工艺。这项研究代表了围绕紫外线/AOP激进化学的传统智慧的研究。调查人员招募了来自UCR的一名研究生和少数族裔本科生在UCR实验室工作，并在OCWD中从事这项研究。此外，博士。 Liu和Ishida以及学生通过水处理设施的讲座和互动活动向当地高中生介绍工业职业。

项目成果

Degradation of 1,4-dioxane by reactive species generated during breakpoint chlorination: Proposed mechanisms and implications for water treatment and reuse

断点氯化过程中产生的活性物质降解 1,4-二恶烷：拟议的机制以及对水处理和再利用的影响

• DOI: 10.1016/j.hazl.2022.100054
• 发表时间: 2022
• 期刊: Journal of Hazardous Materials Letters
• 作者: Patton, Samuel D.;Dodd, Michael C.;Liu, Haizhou
• 通讯作者: Liu, Haizhou