THERMALLY ENHANCED SUBSURFACE REMEDIATION OF CONTAMINATION

该项目的长期目标是减少未来人类接触 有毒化学品通过开发和应用热 用于去除、固定或解毒污染物的技术， 一系列的地下环境。 具体目标是： 1. 研究蒸汽的应用范围和效果 强化萃取，去除高浓度的挥发性污染物 非均匀土壤和含水层系统。 2. 研究温度对土壤微生物种群的影响 以及温度增强污染物生物降解的潜力， 固定率。 3. 确定空气、氧气或氧气混合注入的有效性。 二氧化碳与蒸汽，以增强沉淀，固定，和 有毒金属在水相或非水相中的移动速率。 这些目标将满足实验室，理论，数值研究， 补充其他实地项目，重点是展示创新的 阿拉米达海军航空站特定地点的清理技术， 其他地方 我们的目标是实验室和现场的推广- 具体的研究结果，改进设计和操作 热强化恢复工艺和技术的战略 转移到修复行业。

The long-term objective of this project is to reduce future human exposure to toxic chemicals through the development and application of thermal techniques for removing, immobilizing, or detoxifying contaminants found in a range of subsurface environments. The specific aims are: 1. investigate the range and effectiveness of application of steam enhanced extraction to remove volatile contaminants from highly heterogeneous soils and aquifer systems. 2. Examine the effects of temperature on the soil microbial populations and the potential for temperature-enhanced contaminant biodegradation and immobilization rates. 3. Determine the effectiveness of the co-injection of air, oxygen, or carbon dioxide with steam to enhance precipitation, immobilization, and mobilization rates of toxic metals in aqueous or non-aqueous phases. These aims will met by laboratory, theoretical, an numerical studies which complement other field projects focussed on demonstrations of innovative cleanup technologies at specific sites at Alameda Naval Air Station and elsewhere. Our goals are the generalization of laboratory and site- specific research finding, improvements in the design an operational strategy of thermally enhanced restoration processes, and technology transfer to the restoration industry.