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Enhancing hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine (RDX) remediation through water-dispersible Microbacterium esteraromaticum granules.
Journal of Environmental Management ( IF 8.7 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.jenvman.2020.110446 Sonal Yadav 1 , Abhishek Sharma 2 , Mohd Aamir Khan 1 , Ranju Sharma 1 , Mary Celin 3 , Anushree Malik 1 , Satyawati Sharma 1
Journal of Environmental Management ( IF 8.7 ) Pub Date : 2020-03-28 , DOI: 10.1016/j.jenvman.2020.110446 Sonal Yadav 1 , Abhishek Sharma 2 , Mohd Aamir Khan 1 , Ranju Sharma 1 , Mary Celin 3 , Anushree Malik 1 , Satyawati Sharma 1
Affiliation
In the current manuscript, we explored the remediation potential of Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by Gram-positive Microbacterium esteraromaticum 12849. The strain detoxified 70.9 and 63.93% RDX in minimal nutrient medium and soil, respectively. Subsequently, the strain 12849 was formulated in form of water-dispersible granules (WDG) using talcum powder and alginic acid as inert ingredients. During the microcosm study, WDG exhibited 8.98% enhanced RDX degradation in contrast to the unformulated Microbacterium esteraromaticum. The LC-MS analysis revealed the presence of two intermediates, namely N-methyl-N, N'-dinitromethanediamine, and methylenedintramine, during the RDX degradation by strain 12849 in soil. Interestingly, no significant difference was observed in the rate of RDX degradation by strain 12849 due to the formulation process. The first-order kinetics was seen in RDX degradation with a degradation coefficient of 0.04 and 0.0339 day-1 by formulated and unformulated strain, respectively. The current investigation implies M. esteraromaticum as a potential microbe for RDX degradation and opens up the possibility of exploiting it in its effective WDG form for explosive contaminated sites.
中文翻译:
通过水分散性Microesteresteraromaticum颗粒增强六氢-1、3、5-三硝基-1、3、5-三嗪(RDX)的修复。
在当前的手稿中,我们探索了革兰氏阳性菌esteraromaticum 12849对六氢-1,3,5-三硝基-1,3,5-三嗪(RDX)的修复潜力。该菌株在最低营养水平下解毒了70.9和63.93%RDX。中等和土壤。随后,使用滑石粉和藻酸作为惰性成分,将菌株12849配制成水分散性颗粒(WDG)的形式。在微观研究期间,与未配制的Microesteresteraromaticum相比,WDG的RDX降解增强了8.98%。LC-MS分析揭示了在土壤中12849菌株对RDX降解过程中存在两种中间体,即N-甲基-N,N'-二硝基甲烷二胺和亚甲基二胺。有趣的是 由于配制过程,在菌株12849的RDX降解速率上没有观察到显着差异。在RDX降解中看到一级动力学,分别由配方和非配方菌株引起的降解系数分别为0.04和0.0339 day-1。目前的研究表明,酯芳香杆菌可作为RDX降解的潜在微生物,并开辟了以有效WDG形式将其用于爆炸性污染场所的可能性。
更新日期:2020-03-28
中文翻译:
通过水分散性Microesteresteraromaticum颗粒增强六氢-1、3、5-三硝基-1、3、5-三嗪(RDX)的修复。
在当前的手稿中,我们探索了革兰氏阳性菌esteraromaticum 12849对六氢-1,3,5-三硝基-1,3,5-三嗪(RDX)的修复潜力。该菌株在最低营养水平下解毒了70.9和63.93%RDX。中等和土壤。随后,使用滑石粉和藻酸作为惰性成分,将菌株12849配制成水分散性颗粒(WDG)的形式。在微观研究期间,与未配制的Microesteresteraromaticum相比,WDG的RDX降解增强了8.98%。LC-MS分析揭示了在土壤中12849菌株对RDX降解过程中存在两种中间体,即N-甲基-N,N'-二硝基甲烷二胺和亚甲基二胺。有趣的是 由于配制过程,在菌株12849的RDX降解速率上没有观察到显着差异。在RDX降解中看到一级动力学,分别由配方和非配方菌株引起的降解系数分别为0.04和0.0339 day-1。目前的研究表明,酯芳香杆菌可作为RDX降解的潜在微生物,并开辟了以有效WDG形式将其用于爆炸性污染场所的可能性。