Substrata Surface Chemistry, Conformation of Contaminant Upon Adsorption, & Availability for Biodegradation

0102139 Bryers本研究的目的是量化表面化学对细菌降解所吸附污染物混合物的构象和随后可用性的影响。环境腐植酸对吸附构象的附加影响也将被确定。考虑了三种有机废物：萘、三聚尿酸和三氯乙烯。这项研究有两个主要目的。首先，对选定的三种有机废物进行降解研究（在悬浮液和生物膜培养中），在规定的混合物中，无论是否存在已知数量的腐植酸。环境腐植酸对吸附构象和细菌反应的附加影响将被量化。其次，开发模拟无机土壤基质的模型基质。此外，确定三种有机污染物的不同混合物暴露于这些不同的“矿物模拟”基质的空间构象和分子分布。此外，当混合培养暴露于这些不同的基质时，量化单个物种的代谢反应。这项研究预计将提供对影响污染土地和水的有效处理方案至关重要的基本信息。* * *

0102139 Bryers The objective of this research is to quantify surface chemistry effects on the conformation and subsequent availability of mixtures of adsorbed contaminants for bacterial degradation. The added influence of ambient humic acids on the adsorption conformations will also be determined. Three organic wastes are considered: naphthalene, cyanuric acid and trichloroethylene. This research has two major objectives. First, carry out degradation studies (both in suspension and as biofilm culture) of the three selected organic wastes, in prescribed mixtures, both with and without the presence of known amounts of humic acids. The added influence of ambient humic acids on the adsorption conformations and bacterial responses will be quantified. Second, develop model substrata that mimic inorganic soil substrata. Also, determine the spatial conformation and molecular distributions of various mixtures of the three organic contaminants exposed to these different "mineral mimic" substrata. In addition, quantify individual species' metabolic responses when mixed cultures are exposed to these various substrata. This research is expected to provide fundamental information that is critical to affecting efficient treatment protocols for contaminated land and water. ***