Contaminant mobility in soils/sediments and treatment studies

拟议的研究将扩展以前关于污染物的环境归宿和迁移的工作。其目标是：（1）扩大对重金属环境迁移性和有效性的研究。关键变量包括土壤特性、优先吸附、分配、吸附动力学和机制、不同环境条件下的分布和解吸。将进行实地和实验室研究。还将审查生物利用度。(2)为扩展前人对重金属在不同土壤中的吸附研究，以斜发沸石为研究对象，探讨其在三相流化床中对重金属的吸附效率和处理能力。(3)进行重金属植物补救研究，包括对公路沿着土壤进行植物稳定，以防止金属通过土壤迁移，从而污染溪流和河流。(4)开展一项重要的实验研究，审查多溴联苯醚（PBDEs）的环境途径和归宿-添加到各种产品中的阻燃剂，如计算机和电视机的塑料部件、电路板、室内装潢和纺织品。

The proposed research will extend previous work on the environmental fate and transport of contaminants. The objectives will be: (1) To extend research on environmental mobility of heavy metals and availability. Key variables include soil characteristics, preferential sorption, partitioning, sorption kinetics and mechanism, distribution and desorption for different environmental conditions. Field and laboratory studies will be carried out. Bio-availability will also be examined. (2) To extend previous work on retention of heavy metals in various soils, conduct a major experimental study on clinoptilolite to explore its sorption efficiency and treatment capacity for ARD remediation in a three-phase fluidized bed. (3) To undertake a phytoremediation study for heavy metals involving phytostabilization of soils along highways to prevent migration of metals through soil which might contaminate streams and rivers. (4) To undertake a major experimental study to examine the environmental pathways and fate of polybrominated diphenyl ethers (PBDEs) - flame retardants added to a wide variety of products such as plastic components of computers and televisions, circuit boards, upholstery, and textiles.