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Application of advanced oxidation processes for TNT removal: a review

Abstract : Nowadays, there are increasingly stringent regulations requiring drastic treatment of 2,4,6- trinitrotoluene (TNT) contaminated waters to generate treated waters which could be easily reused or released into the environment without any harmful effects. TNT is among the most highly suspected explosive compounds that interfere with groundwater system due to its high toxicity and low biodegradability. The present work is an overview of the literature on TNT removal from polluted waters and soils and, more particularly, its treatability by advanced oxidation processes (AOPs). Among the remediation technologies, AOPs constitute a promising technology for the treatment of wastewaters containing non-easily biodegradable organic compounds. Data concerning the degradation of TNT reported during the period 1990–2009 are evaluated in this review. Among the AOPs, the following techniques are successively debated: processes based on hydrogen peroxide (H2O2 + UV, Fenton, photo-Fenton and Fenton-like processes), photocatalysis, processes based on ozone (O3, O3 + UV) and electrochemical processes. Kinetic constants related to TNT degradation and the different mechanistic degradation pathways are discussed. Possible future treatment strategies, such as, coupling AOP with biological treatment is also considered as a mean to improve TNT remediation efficiency and kinetic.
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K. Ayoub, Eric D. van Hullebusch, M. Cassir, Alain Bermond. Application of advanced oxidation processes for TNT removal: a review. Journal of Hazardous Materials, Elsevier, 2010, 178 (1/3), pp.10-28. ⟨10.1016/j.jhazmat.2010.02.042⟩. ⟨hal-01192189⟩



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