DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Experimental and Computational Study of Pyrogenic Carbonaceous Matter Facilitated Hydrolysis of 2,4-Dinitroanisole (DNAN)

Journal Article · · Environmental Science and Technology
 [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5]; ORCiD logo [1]
  1. Villanova Univ., PA (United States)
  2. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  3. Connecticut Agricultural Experiment Station, New Haven, CT (United States)
  4. Oregon Health & Science Univ., Portland, OR (United States)
  5. US Army Engineer Research & Development Center, Hanover, NH (United States). Cold Regions Research and Engineering Laboratory (CRREL)

This study investigated the reaction pathway of 2,4-dinitroanisole (DNAN) on the pyrogenic carbonaceous matter (PCM) to assess the scope and mechanism of PCM-facilitated surface hydrolysis. DNAN degradation was observed at pH 11.5 and 25 °C with a model PCM, graphite, whereas no significant decay occurred without graphite. Experiments were performed at pH 11.5 due to the lack of DNAN decay at pH below 11.0, which was consistent with previous studies. Graphite exhibited a 1.78-fold enhancement toward DNAN decay at 65 °C and pH 11.5 relative to homogeneous solution by lowering the activation energy for DNAN hydrolysis by 54.3 ± 3.9%. This is supported by our results from the computational modeling using Car–Parrinello simulations by ab initio molecular dynamics/molecular mechanics (AIMD/MM) and DFT free energy simulations, which suggest that PCM effectively lowered the reaction barriers by approximately 8 kcal mol–1 compared to a homogeneous solution. Quaternary ammonium (QA)-modified activated carbon performed the best among several PCMs by reducing DNAN half-life from 185 to 2.5 days at pH 11.5 and 25 °C while maintaining its reactivity over 10 consecutive additions of DNAN. We propose that PCM can affect the thermodynamics and kinetics of hydrolysis reactions by confining the reaction species near PCM surfaces, thus making them less accessible to solvent molecules and creating an environment with a weaker dielectric constant that favors nucleophilic substitution reactions. Nitrite formation during DNAN decay confirmed a denitration pathway, whereas demethylation, the preferred pathway in homogeneous solution, produces 2,4-dinitrophenol (DNP). Denitration catalyzed by PCM is advantageous to demethylation because nitrite is less toxic than DNAN and DNP. These findings provide critical insights for reactive adsorbent design that has broad implications for catalyst design and pollutant abatement.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
2447969
Report Number(s):
PNNL-SA--198028
Journal Information:
Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 21 Vol. 58; ISSN 0013-936X
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (63)

Large-Scale Plane-Wave-Based Density Functional Theory: Formalism, Parallelization, and Applications book July 2011
Parallel implementation of γ-point pseudopotential plane-wave DFT with exact exchange journal November 2010
Physical Simulation of Live‐Fire Detonations using Command‐Detonation Fuzing journal May 2018
Editor's Perspective—An In Situ Revelation: First Retard Migration, Then Treat journal March 2015
Environmental persistence, hazard, and mitigation challenges of nitroaromatic compounds journal August 2019
Extension to the weighted histogram analysis method: combining umbrella sampling with free energy calculations journal March 2001
Treatment methods for the remediation of nitroaromatic explosives journal June 2001
Plane-Wave DFT Methods for Chemistry book January 2017
Modified carbons for enhanced nucleophilic substitution reactions of adsorbed methyl bromide journal October 2018
Black carbon: The reverse of its dark side journal April 2006
Identity and distribution of residues of energetic compounds at army live-fire training ranges journal May 2006
DFT M06-2X investigation of alkaline hydrolysis of nitroaromatic compounds journal July 2012
Environmental fate of 2,4-dinitroanisole (DNAN) and its reduced products journal January 2015
Surface-promoted hydrolysis of 2,4,6-trinitrotoluene and 2,4-dinitroanisole on pyrogenic carbonaceous matter journal April 2018
The synergistic interaction between sulfate-reducing bacteria and pyrogenic carbonaceous matter in DDT decay journal October 2019
NWChem: A comprehensive and scalable open-source solution for large scale molecular simulations journal September 2010
Advanced Oxidation Process for DNAN Using UV/H2O2 journal October 2019
Lignin cationization with glycidyltrimethylammonium chloride aiming at water purification applications journal October 2017
Comparison of biotic and abiotic treatment approaches for co-mingled perchlorate, nitrate, and nitramine explosives in groundwater journal January 2007
Degradation and fate of 2,4-dinitroanisole (DNAN) and its intermediates treated with Mg/Cu bimetal: Surface examination with XAS, DFT, and LDI-MS journal July 2023
Ecotoxicological assessment of a high energetic and insensitive munitions compound: 2,4-Dinitroanisole (DNAN) journal November 2013
Microbial toxicity of the insensitive munitions compound, 2,4-dinitroanisole (DNAN), and its aromatic amine metabolites journal November 2013
Alkaline hydrolysis pathway of 2,4-dinitroanisole verified by 18O tracer experiment journal September 2020
A review on the occurrence of micropollutants in the aquatic environment and their fate and removal during wastewater treatment journal March 2014
Black carbon-enhanced transformation of dichloroacetamide safeners: Role of reduced sulfur species journal October 2020
In Silico Alkaline Hydrolysis of Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine: Density Functional Theory Investigation journal August 2016
Black Carbon Facilitated Dechlorination of DDT and its Metabolites by Sulfide journal November 2016
A Pilot-Scale Field Study: In Situ Treatment of PCB-Impacted Sediments with Bioamended Activated Carbon journal January 2019
Different Mechanisms of Alkaline and Enzymatic Hydrolysis of the Insensitive Munition Component 2,4-Dinitroanisole Lead to Identical Products journal June 2018
Computational Predictions of the Hydrolysis of 2,4,6-Trinitrotoluene (TNT) and 2,4-Dinitroanisole (DNAN) journal November 2022
Sorption of Polycyclic Aromatic Hydrocarbons and Polychlorinated Biphenyls to Soot and Soot-like Materials in the Aqueous Environment:  Mechanistic Considerations journal July 2002
Rate and Extent of Aqueous Perchlorate Removal by Iron Surfaces journal June 2003
Black Carbon-Mediated Destruction of Nitroglycerin and RDX By Hydrogen Sulfide journal July 2010
Mechanisms and Kinetics of Alkaline Hydrolysis of the Energetic Nitroaromatic Compounds 2,4,6-Trinitrotoluene (TNT) and 2,4-Dinitroanisole (DNAN) journal February 2013
Role of Black Carbon Electrical Conductivity in Mediating Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) Transformation on Carbon Surfaces by Sulfides journal June 2013
Comprehensive Investigations of Kinetics of Alkaline Hydrolysis of TNT (2,4,6-Trinitrotoluene), DNT (2,4-Dinitrotoluene), and DNAN (2,4-Dinitroanisole) journal August 2014
Field Application of Activated Carbon Amendment for In-Situ Stabilization of Polychlorinated Biphenyls in Marine Sediment journal April 2009
Sequestration of Hydrophobic Organic Contaminants by Geosorbents journal December 1997
Biochar as an Electron Shuttle between Bacteria and Fe(III) Minerals journal July 2014
The missing term in effective pair potentials journal November 1987
In silico kinetics of alkaline hydrolysis of 1,3,5-trinitro-1,3,5-triazinane (RDX): M06-2X investigation journal January 2017
Correlation of reaction rates with acidity functions in strongly basic media. Part 1.—Reaction of 2,4-dinitroanisole with aqueous sodium hydroxide journal January 1963
Correlation of reaction rates with acidity functions in strongly basic media. Part 2.—Reaction of 2,4-dinitroaniline with aqueous sodium hydroxide journal January 1963
Structure and dynamics of the hydration shells of the Zn2+ ion from ab initio molecular dynamics and combined ab initio and classical molecular dynamics simulations journal May 2010
Toward reliable density functional methods without adjustable parameters: The PBE0 model journal April 1999
NWChem: Past, present, and future journal May 2020
Abiotic reduction of insensitive munition compounds by sulfate green rust journal January 2018
A molecular dynamics method for simulations in the canonical ensemble journal June 1984
Molecular dynamics without effective potentials via the Car-Parrinello approach journal August 1990
Hard scaling challenges for ab initio molecular dynamics capabilities in NWChem: Using 100,000 CPUs per second journal July 2009
Analysis of New Generation Explosives in the Presence of U.S. EPA Method 8330 Energetic Compounds by High-Performance Liquid Chromatography journal January 2009
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Canonical dynamics: Equilibrium phase-space distributions journal March 1985
Generalized norm-conserving pseudopotentials journal August 1989
Adiabaticity in first-principles molecular dynamics journal April 1992
Efficacious Form for Model Pseudopotentials journal May 1982
Unified Approach for Molecular Dynamics and Density-Functional Theory journal November 1985
Generalized Gradient Approximation Made Simple journal October 1996
Aerobic Biodegradation of 2,4-Dinitroanisole by Nocardioides sp. Strain JS1661 journal December 2014
Bioremediation. An overview journal July 2001
The Influcence of the Solvent on Reaction Velocity. XXIII. The Alkaline Hydrolysis of Ethyl Acetate in Dimethyl Sulphoxide-Water Mixtures. journal January 1963
The organic solvent extraction efficiency of activated carbon used in sampling tube products journal January 2015