SBIR Phase II: Photochemical Treatment of Dioxin-Furan Compound Emissions from Industrial Processes

SBIR第二阶段研究将推进光化学的使用，以控制工业源（如熔炉，锅炉和窑炉）排放的有毒空气污染物。目前成功用于废水处理、水净化和气流消毒的紫外线灯源类型将适用于更具挑战性的工业过程废气流环境。这项研究计划涉及一个光化学系统，旨在破坏高毒性化合物称为二恶英呋喃，这是一些工业过程的意外副产品。在一个工业设施的扩展测试计划中，研究人员将评估：（1）热的、充满灰尘的气流中的长期紫外线灯能效，（2）在源条件的常规变化期间二恶英-呋喃的破坏效率，（3）反应产物特性，以及（4）除了目标二恶英-呋喃外，污染物的减少。 这项研究的更广泛影响将包括更好地了解二恶英-呋喃化合物在工业气流典型的气体温度和污染物浓度下的化学反应。研究结果将有助评估光化学系统的适用性，以提供高效率的空气污染控制，同时减少现有控制技术产生的温室气体排放。破坏有毒空气污染物的光化学系统将提供一种有吸引力的替代系统，该系统将有毒化合物保留在垃圾填埋场的吸附剂上。紫外线技术的发展将导致减少持久性有毒污染物的空气排放，这些污染物在食物链中生物积累并对人类健康造成不利影响。

This SBIR Phase II research will advance the use of photochemistry for the control of toxic air pollutants emitted from industrial sources such as furnaces, boilers, and kilns. The types of ultraviolet lamp sources now used successfully for wastewater treatment, water purification, and air stream disinfection will be adapted for use in the more challenging environment of industrial process effluent gas streams. This research program concerns a photochemical system designed to destroy highly toxic compounds called dioxin-furans, which are unintended byproducts of some industrial processes. During an extended test program at an industrial facility, the researchers will evaluate: (1) long-term ultraviolet lamp energy efficiency in hot, dust-laden gas streams, (2) dioxin-furan destruction efficiencies during routine variations in source conditions, (3) reaction product characteristics, and (4) reductions in pollutants in addition to the targeted dioxin-furans. The broader impacts of this research will include an improved understanding of the chemical reactions of dioxin-furan compounds at the gas temperatures and pollutant concentrations typical of industrial gas streams. The results will help assess the applicability of photochemical systems to provide high efficiency air pollution control while reducing emissions of greenhouse gases produced by existing control techniques. Photochemical systems that destroy toxic air pollutants will provide an attractive alternative to systems that retain the toxic compounds on adsorbents disposed in landfills. The development of ultraviolet light technology will result in reduced air emissions of persistent toxic pollutants that bio-accumulates in the food chain and cause adverse human health effects.