Characterization of wastewater from the Brazilian TNT industry

Barreto-Rodrigues, Márcio; Silva, Flávio T.; Paiva, Teresa Cristina Brazil de

doi:10.1016/j.jhazmat.2008.07.152

Cited by 34 publications

(15 citation statements)

References 12 publications

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“…Adsorption of organic materials involves electrostatic interactions between the organic pollutants in TNT red water and functional groups on the MAC. The TNT red water contains dinitrotoluene-sulfonate (Ph-SO 3 Na), α-TNT, several α-nitrophenols (NBCs-OH), α-nitrobenzoic acid (NBCs-COOH), and other nitrobenzene compounds (NBCs) [28]. In the aqueous medium, dinitrotoluene-sulfonate is dissociated and converted to anionic forms as shown in Eq.…”

Section: Effects Of Ph On Adsorption Of Organic Pollutantsmentioning

confidence: 99%

Removal of organic pollutants from red water by magnetic-activated coke

Zhang

Tong

et al. 2014

Desalination and Water Treatment

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2014):Removal of organic pollutants from red water by magnetic-activated coke, Desalination and Water Treatment, A magnetic adsorbent, magnetic-activated coke (MAC), is incorporated with Fe 3 O 4 particles for removal of organic materials from 2,4,6-trinitrotoluene red water. The MAC is characterized by N 2 adsorption, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, and energy dispersive X-ray spectroscopy. Adsorption of organic pollutants is evaluated systematically by varying the adsorbent dosage, exposure time, temperature, pH, and dilution ratios of 2,4,6-trinitrotoluene red water. The equilibrium adsorption data can be better fitted with the Freundlich isotherm than Langmuir isotherm except at 343 K. The adsorption kinetics follows a pseudo-second-order model and thermodynamic analysis indicates an endothermic and spontaneous adsorption process. The settling rate after adsorption suggests that the response of MAC under an external magnetic field is very fast.

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Section: Effects Of Ph On Adsorption Of Organic Pollutantsmentioning

confidence: 99%

Removal of organic pollutants from red water by magnetic-activated coke

Zhang

Tong

et al. 2014

Desalination and Water Treatment

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“…The detection of trace military explosives in seawater, lakes, rivers, soil, and industrial wastewater has been carried out on a worldwide scale following concerns regarding their presence in the natural environment from munitions factories used in World Wars I and II (Darrach et al, 1998;Furton et al, 2000;Psillakis and Kalogerakis, 2001;Monteil-Rivera et al, 2004;Pan et al, 2006;Guan et al, 2007;Ahmad et al, 2008;Ochsenbein et al, 2008;Barreto-Rodrigues et al, 2009;Babaee and Beiraghi, 2010;Schramm et al, 2016). However, in order to monitor explosives throughout the wastewater system and harness any information as an intelligence source, first it is essential to establish working methods for the analysis of peroxide explosives and to understand how they behave in complex environmental matrices (Morgan and Bull, 2007;Chisum and Turvey, 2011).…”

Section: Introductionmentioning

confidence: 99%

Detection of trace peroxide explosives in environmental samples using solid phase extraction and liquid chromatography mass spectrometry

Gamble

Campos

Morgan

2017

Environmental Forensics

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This article presents solid phase extraction (SPE) and liquid chromatography-mass spectrometry (LC-MS) methods for the trace detection of the peroxide explosives triacetone triperoxide (TATP) and hexamethylene triperoxide diamine (HMTD). Furthermore, experimental studies use these methods to explore the efficiency of wastewater treatment plant (WWTP) processes at removing trace levels of peroxide explosives from water samples to assess the application of the developed methods for the detection of explosives in the environment. The principal results of this study showed that the greatest removal of TATP and HMTD from spiked water samples occurred following the biological treatment stage, however, the WWTP processing did not completely remove all of the analytes from the water, suggesting that such chemicals could contaminate downstream river water samples. The toxicity of chemical pollutants is often determined by their concentration, however, even at trace levels, the monitoring of explosives in the natural environment could be extremely informative for the detection of criminal activity as well as long-term effects upon aquatic life. These findings also have significant implications for crime prevention and disruption approaches that can use this type of data as intelligence to guide investigations regarding the source and attribution of detected explosives.

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“…Although these studies obtained a high performance in TNT removal from aqueous solution, very few of them had been applied to practical problems due to rigorous reaction conditions and high operating cost. In addition, the synthetic TNT wastewater used in most of these studies might not represent the real ingredients of TNT manufacturing http wastewater, which is much more complex, usually coexisting with other types of hazardous organic and inorganic contaminants [11]. Obviously, it is crucial to develop a cost-effective and easily controlled system for TNT manufacturing wastewater treatment, providing workable solutions to real world problems.…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of novel catalytic-ceramic-filler in a coupled system for TNT manufacturing wastewater treatment

et al. 2015

Chemical Engineering Journal

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Characterization of wastewater from the Brazilian TNT industry

Cited by 34 publications

References 12 publications

Removal of organic pollutants from red water by magnetic-activated coke

Removal of organic pollutants from red water by magnetic-activated coke

Detection of trace peroxide explosives in environmental samples using solid phase extraction and liquid chromatography mass spectrometry

Preparation and application of novel catalytic-ceramic-filler in a coupled system for TNT manufacturing wastewater treatment

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