Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) reduction by granular zero-valent iron in continuous flow reactor

Wastewater streams containing hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) are subject to regulatory discharge regulations that require processing through industrial waste treatment. Thus, the development of easy-to-apply technologies for the treatment of RDX-laden wastewater streams is imperative....

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Veröffentlicht in:Environmental science and pollution research international 2018-10, Vol.25 (28), p.28489-28499
Hauptverfasser: Terracciano, Amalia, Ge, Jie, Koutsospyros, Agamemnon, Meng, Xiaoguang, Smolinski, Benjamin, Arienti, Per
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container_issue 28
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container_title Environmental science and pollution research international
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creator Terracciano, Amalia
Ge, Jie
Koutsospyros, Agamemnon
Meng, Xiaoguang
Smolinski, Benjamin
Arienti, Per
description Wastewater streams containing hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) are subject to regulatory discharge regulations that require processing through industrial waste treatment. Thus, the development of easy-to-apply technologies for the treatment of RDX-laden wastewater streams is imperative. In the present study, the reduction of RDX by granular zero valent iron (GZVI) in batch and column experiments was investigated. Preliminary batch tests conducted under both oxic and anoxic conditions showed that after 3.0 h of reaction with GZVI, RDX was mainly converted to formaldehyde (CH 2 O), nitrate (NO 3 − ), and ammonium (NH 4 + ). Column filtration tests showed that pretreatment of the GZVI media with acid wash and low influent pH (4.0 ± 0.1) achieved 99% removal of RDX up to 5000 bed volume. BOD tests carried out on the post-treatment streams showed increased biodegradability of the treated wastewater, leading to a lower environmental impact for the final waste.
doi_str_mv 10.1007/s11356-018-2871-8
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subjects Ammonium
Anoxic conditions
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Biodegradability
Biodegradation
Continuous flow
Digital media
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental impact
Environmental science
Filtration
Hexahydro-1,3,5-trinitro-1,3,5-triazine
Industrial Waste - analysis
Industrial wastes
Iron
Iron - chemistry
Models, Theoretical
Nitrates
Pretreatment
RDX
Reduction
Research Article
Streams
Triazine
Triazines - analysis
Waste treatment
Waste Water - chemistry
Waste Water Technology
Wastewater treatment
Water Management
Water Pollutants, Chemical - analysis
Water Pollution Control
Water Purification - methods
title Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) reduction by granular zero-valent iron in continuous flow reactor
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