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首页> 外文期刊>International Journal of Soil, Sediment and Water >Bio-geochemical Factors that Affect RDX Degradation
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Bio-geochemical Factors that Affect RDX Degradation

机译：影响RDX降解的生物地球化学因素

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摘要

Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a secondary high explosive that has been identified as a contaminant of concern in groundwater and soil as a result of military training activities (Wani et al., 2002). Remediation technologies that have been proposed for use on these training ranges include in situ techniques. An obstacle to using in situ approaches for the treatment of RDX contaminated soils and groundwater is the lack of information concerning the biogeochemical factors that influence transformation. This research compares paired (biotic and poised abiotic systems) RDX degradation experiments in which Eh-pH conditions conducive to RDX degradation were established. Degradation of RDX under iron-reducing conditions was studied in biological and chemical systems. The redox conditions created by the biological systems were simulated by poised chemical systems in order to compare RDX transformation. The poised chemical systems used an iron-ligand complex to achieve the necessary Eh values for RDX degradation. RDX degraded in both biological and chemical systems and final reaction solutions from both systems were analyzed to determine which degradation pathway was followed. The results from this effort will expand the basic knowledge of energetic transformation over a range of biologically-induced conditions, by isolation of enzymatic pathways from abiotic redox mechanisms.
机译：六氢-1,3,5-三硝基-1,3,5-三嗪（RDX）是次要的高爆炸药，由于军事训练活动而被确定为地下水和土壤中令人关注的污染物（Wani等。 ，2002）。提议用于这些培训范围的补救技术包括原位技术。使用原位处理RDX污染的土壤和地下水的障碍是缺乏影响转化的生物地球化学因素的信息。这项研究比较了成对的（生物和平衡非生物系统）RDX降解实验，其中建立了有助于RDX降解的Eh-pH条件。在生化系统中研究了铁还原条件下RDX的降解。由生物系统创建的氧化还原条件由平衡化学系统模拟，以比较RDX转化。平衡的化学系统使用铁-配体配合物来实现RDX降解所需的Eh值。在生物和化学系统中降解的RDX以及来自这两个系统的最终反应溶液均经过分析，以确定遵循了哪种降解途径。通过从非生物氧化还原机制中分离出酶促途径，这项努力的结果将扩大能量转化在一系列生物诱导条件下的基础知识。

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