In-situ polymerization to immobilize contaminants in groundwater

原位聚合固定地下水污染物

• 批准号: 1709786
• 负责人: John Ferry
• 金额: $ 28万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1709786&HistoricalAwards=false
• 关键词: situ; polymerization; immobilize; contaminants; groundwater

This project is funded by the Environmental Chemical Sciences program in the Division of Chemistry. It supports Professors John Ferry and Thomas Makris of the University of South Carolina at Columbia to investigate approaches to groundwater remediation. Groundwater is a critical national resource, used daily to meet individual, agricultural, industrial, and commercial needs. Soluble, toxic organic chemicals (such as chlorinated solvents and wood preservatives) in groundwater restrict its availability for use. Many treatment strategies are based on moving the contaminant into an alternate phase (e.g., gas or solid). This project tests the hypothesis that "polymerization in place" strategies can be used to increase the molecular weight of some contaminants in the subsoil, allowing them to form solids that separate from the liquid groundwater. The process of immobilizing the contaminants ensures that they are no longer available to plants and animals (including people) that use the water. This study may produce a more efficient approach for contaminant removal. The research is carried out by graduate students who receive training in fundamental chemical research with applications in sustainable approaches to solving environmental challenges.The team explores this strategy by examining the kinetics and products of the reactions of several commonly-found groundwater contaminants. These include chlorinated solvents and wood preservative. The model contaminants used in this study include the most widely detected organic contaminants reported in the National Assessment of Water Quality groundwater database. Several widely-used polymerization catalysts are being tested. New technologies may reclaim significant groundwater resources that currently are prohibitively expensive to recover. The project also develops a new understanding of polymerization processes in soils, potentially offering new insight regarding organic carbon sequestration strategies.

该项目由化学系环境化学科学项目资助。它支持哥伦比亚南卡罗来纳州的约翰·费里和托马斯·马克里斯教授研究地下水修复的方法。地下水是一种重要的国家资源，每天用于满足个人，农业，工业和商业需求。地下水中的可溶性有毒有机化学品（如氯化溶剂和木材防腐剂）限制了其使用。 许多处理策略是基于将污染物移动到交替相（例如，气体或固体）。该项目测试的假设是，“就地聚合”策略可用于增加底土中某些污染物的分子量，使其形成固体，与液态地下水分离。固定污染物的过程确保它们不再被使用水的植物和动物（包括人）利用。这项研究可能会产生一个更有效的方法来去除污染物。该研究由接受基础化学研究培训的研究生进行，这些研究生应用可持续方法解决环境挑战。该团队通过检查几种常见地下水污染物的反应动力学和产物来探索这一策略。其中包括氯化溶剂和木材防腐剂。本研究中使用的模型污染物包括国家水质评估地下水数据库中报告的最广泛检测到的有机污染物。 目前正在测试几种广泛使用的聚合催化剂。新技术可能会回收大量的地下水资源，而这些资源目前的回收成本高得令人望而却步。该项目还对土壤中的聚合过程有了新的认识，有可能为有机碳封存战略提供新的见解。