Article
Environmental Sciences
Arjun Meda, Pritam Sangwan, Kiran Bala
Summary: The investigation explored the potential of two indigenous microbes for RDX degradation in aqueous medium and found that they showed high removal efficiency, capable of effectively remediating contaminated sites, and identified some intermediate degradation products.
Article
Environmental Sciences
Mohd Aamir Khan, Abhishek Sharma, Sonal Yadav, S. Mary Celin, Satyawati Sharma
Summary: High-energy explosives discharged into the surrounding environment can leave a toxic footprint. The bioremediation of RDX, a potential human carcinogen, has gained attention, but the lack of understanding and limitations of current approaches hinder its widespread use. New bioremediation technologies are needed to enhance performance.
Article
Toxicology
Paige C. Mundy, Alicia Werner, Latika Singh, Vikrant Singh, Rosalia Mendieta, Caitlyn E. Patullo, Heike Wulff, Pamela J. Lein
Summary: RDX is a major component of C-4 explosives and ingestion can cause seizures. In vitro and in silico experiments have shown that RDX inhibits GABA(A) receptor-mediated chloride currents, leading to seizures. This study confirms the mechanism in vivo using a zebrafish model and demonstrates the effectiveness of GABA(A) receptor-targeted drugs in mitigating RDX-induced seizures.
ARCHIVES OF TOXICOLOGY
(2023)
Article
Physics, Applied
Hongfu Wang, Yan Liu, Fan Bai, Fenglei Huang
Summary: The experimental results indicate that as the size of the aluminum powder decreases, the shock sensitivity of aluminized RDX increases, along with the reaction rate and the proportion of aluminum involved in the initiation reaction.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Environmental Sciences
Murteza Jaafaryneya, Jafar Amani, Raheleh Halabian
Summary: This study aimed to screen and characterize explosive biodegradable Actinomycetes from water, wastewater, and sludge. Actinomycetes isolates from 80 environmental samples were recovered and identified. The results showed that the isolates can degrade and consume 50-80% of RDX and TNT as their sole carbon and energy source. Seeking and screening untapped ecosystems that possess unexplored Actinomycetes will increase the chances of discovering microorganisms capable of degrading TNT and RDX for bioremediation.
WATER AND ENVIRONMENT JOURNAL
(2023)
Article
Engineering, Environmental
Anchita Kalsi, S. Mary Celin, Pallvi Bhanot, Sandeep Sahai, Jai Gopal Sharma
Summary: The study showed that using poultry waste as a carrier for explosive degrading microbes is effective for in situ remediation of explosive contaminated soils, with better results seen under saturated conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Physics, Applied
J. M. Winey, Y. Toyoda, Y. M. Gupta
Summary: This study experimentally compared the shock and detonation response of insensitive and conventional HE single crystals, showing that chemical decomposition onset for RDX occurs at much lower pressures and the overdriven C-J detonation response occurs at higher pressures.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Xue-Xue Zhang, Zhi-Hua Xue, Zikangping Wang, Qi-Long Yan
Summary: In this study, a microfluidic crystallization method was used to dope hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) crystals with a two-dimensional (2D) high nitrogentriaminoguanidine-glyoxalpolymer (TAGP). The resulting TAGP-doped RDX crystals (controlled qy-RDX) exhibited higher bulk density and better thermal stability. The crystal structure and thermal reactivity properties of the qy-RDX were influenced by the mixing speed of the solvent and antisolvent. The controlled qy-RDX samples showed different thermal decomposition models depending on their activation energy (E(a)).
Article
Thermodynamics
Zhihe Zhang, Lili Ye, Xiaodong Wang, Xionggang Wu, Wei Gao, Jizhen Li, Mingshu Bi
Summary: Recent studies explore the challenging accurate description of the reaction mechanisms in fast pyrolysis of 1,3,5trinitro-1,3,5-triazinane (RDX). This work investigates the pyrolysis mechanism of RDX using ab initio kinetic calculations and modeling simulations, revealing that decomposition mainly occurs through N-NO2 bond fission and C-H beta-scission. Interestingly, the secondary intermediate INT175 plays a significant role in the decomposition of RDXR.
COMBUSTION AND FLAME
(2022)
Article
Biochemical Research Methods
Amir Lifshitz, Benjamin Shemer, Carina Hazan, Etai Shpigel, Shimshon Belkin
Summary: This study describes the design, construction, and testing of Escherichia coli-based bioluminescent bioreporters for detecting RDX explosives, with enhanced signal intensity and detection sensitivity achieved through genetic modifications. The bioreporters showed sensitive detection of RDX in solid matrices, suggesting their potential for standoff detection of RDX-based explosive devices.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Chaoyu Wang, Chaoyang Zhang, Xianggui Xue
Summary: This study investigates the early thermal decay mechanisms of two polymorphs of RDX at high pressure and high temperature and reveals the different effects of pressure on the decomposition rate of these two polymorphs. The findings contribute to a better understanding of the pressure and polymorph-dependent effect on the decay of RDX and provide valuable insights for the development of a kinetic model for the combustion of solid RDX.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Multidisciplinary Sciences
Kirty Sharma, Praveen Sharma, S. Mary Celin, Pramod Kumar Rai, Pritam Sangwan
Summary: The study optimized the degradation of RDX using a consortium of native bacterial species, with results showing that an initial RDX concentration of 40 mg/L, an inoculation size of 6 mL, and a time duration of 12 days were optimal for reducing RDX up to 80.4%.
SN APPLIED SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Zi-Jian Sun, Hui Li, Weihua Zhu
Summary: Context reactive molecular dynamics simulations were used to study the decomposition processes of RDX crystal under high temperatures and detonation pressure. The decomposition paths were found to be similar under different temperatures coupled with detonation pressure. The formation rates of N-2 and H2O were greatly influenced by temperature, while CO2 formation rates were less affected. Pressure application reduced the reaction energy barrier and accelerated the decomposition.
JOURNAL OF MOLECULAR MODELING
(2023)
Article
Chemistry, Physical
Santosh K. Singh, Vasant Vuppuluri, Bing-Jian Sun, Bo-Yu Chang, Andre K. Eckhardt, Steven F. Son, Agnes H. H. Chang, Ralf Kaiser
Summary: This study reports the experimental evidence of enol intermediates and related compounds formed during the photodecomposition processes in energetic materials, suggesting that enols may be the source of hydroxyl radicals. The inclusion of enols in theoretical models is crucial for understanding the unique chemistry of explosive materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Multidisciplinary
Mahmoud Abdelha, Ahmed K. Hussein, Waleed F. Khalil, Ahmed Elbeih
Summary: In this study, electrospinning technique was used to successfully fabricate polystyrene (PS)/1,3,5-trinitro-1,3,5-triazinane (RDX) composite nanofibers. The fabricated nanofibers were characterized and their performance was tested. The results showed that the nano-fibers exhibited good thermal stability and low impact and friction sensitivities, indicating potential applications in explosives detection.
DEFENCE TECHNOLOGY
(2023)
