An investigation of plasma formation in electromechanically driven free bubbles at resonance in water with applications for the treatment of water

1336375目前的水处理方法不能处理来自农业径流、挥发性有机化合物和药物残留物的新污染威胁，因此需要先进的方法。在液态水中产生等离子体会产生大量能够迅速分解有机污染物的氧化剂。这项计划研究了一种新的方法，即在浸入水中的气泡中产生等离子体，方法是在电场的作用下以共振的方式驱动气泡。本文研究了共振驱动气泡的点火物理特性，等离子体在气泡中形成的时间演化，以及分离等离子体气泡和液态水的活性界面层的化学性质。从这些研究中获得的理解将用于设计和建造用于水净化的等离子体反应器。将为来自底特律地区大学预科工程项目的学生和由科学与工程女性赞助的学生提供实验室参观和演示，使用内部制造的等离子体演示实验。拟议的努力将资助一名来自暑期研究机会计划（SROP）的学生，该计划旨在鼓励代表性不足的学生就读研究生院。等离子演示将被整合到由全国黑人工程师协会领导的现有教育推广工作中。

1336375FosterCurrent water treatment methodologies are not designed to handle emerging contamination threats derived from agricultural run-off, volatile organic compounds, and pharmaceutical residues therefore advanced methods are needed. Plasma production in liquid water produces a host of oxidation agents capable of rapidly decomposing organic contaminants. The proposed effort investigates a novel method of producing plasma in bubbles immersed in water by driving them at resonance in the presence of an electric field. This effort studies the ignition physics of resonantly driven bubbles, the time evolution of plasma formation in such bubbles, and the chemistry of the active interfacial layer separating the plasma bubble and the liquid water. The understanding gained from these studies will be used to design and build a plasma reactor for the purpose of water purification. Laboratory tours and demonstrations will be given to students from the Detroit Area Pre-College Engineering Program and those sponsored by Women in Science and Engineering, using in-house fabricated plasma demonstration experiments. The proposed effort will sponsor a student from the Summer Research Opportunity Program (SROP), a program aimed at encouraging underrepresented students to attend graduate school. The plasma demonstrations will be integrated into the existing educational outreach effort led by the National Society of Black Engineers.