TY - JOUR
T1 - Kinetics of RDX degradation by zero-valent iron (ZVI)
AU - Wanaratna, Pischa
AU - Christodoulatos, Christos
AU - Sidhoum, Mohammed
PY - 2006/8/10
Y1 - 2006/8/10
N2 - Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a common groundwater contaminant at military facilities. The current research has been conducted to evaluate the use of zero-valent iron (ZVI) for the remediation of water contaminated with RDX. RDX was found to degrade rapidly in the presence of ZVI. The observed first-order kinetic constant for RDX reduction follows an enzymatic-like kinetic model with respect to the ZVI concentration. At low ZVI concentrations, RDX reduction follows pseudo first order kinetics with respect to ZVI concentration; while at high ZVI concentrations the RDX reduction is zero-order. Nitroso compounds (MNX, DNX, and TNX), nitrate, nitrite and nitrous oxide were identified as the main by-products for the RDX reduction by ZVI. The nitroso compounds were found to undergo reduction by ZVI.
AB - Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) is a common groundwater contaminant at military facilities. The current research has been conducted to evaluate the use of zero-valent iron (ZVI) for the remediation of water contaminated with RDX. RDX was found to degrade rapidly in the presence of ZVI. The observed first-order kinetic constant for RDX reduction follows an enzymatic-like kinetic model with respect to the ZVI concentration. At low ZVI concentrations, RDX reduction follows pseudo first order kinetics with respect to ZVI concentration; while at high ZVI concentrations the RDX reduction is zero-order. Nitroso compounds (MNX, DNX, and TNX), nitrate, nitrite and nitrous oxide were identified as the main by-products for the RDX reduction by ZVI. The nitroso compounds were found to undergo reduction by ZVI.
KW - Kinetics
KW - Nitroso compounds
KW - RDX
KW - Reduction
KW - Zero-valent iron (ZVI)
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U2 - 10.1016/j.jhazmat.2005.11.015
DO - 10.1016/j.jhazmat.2005.11.015
M3 - Article
C2 - 16386362
AN - SCOPUS:33744916772
SN - 0304-3894
VL - 136
SP - 68
EP - 74
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1 SPEC. ISS.
ER -