Optimization of Brazilian TNT industry wastewater treatment using combined zero-valent iron and fenton processes

Barreto-Rodrigues, Márcio; Silva, Flávio Teixeira da; Paiva, Teresa Cristina Brazil de

doi:10.1016/j.jhazmat.2009.02.172

Cited by 33 publications

(11 citation statements)

References 17 publications

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“…AOPs, such as the Fenton process and its modifications, proved to be very effective in various wastewater treatments [19]. Metallic iron and other iron-based catalysts were used, interalia, for the treatment of pharmaceuticals [20,21], trinitrotoluene (TNT) wastewater [22], phenols and chlorophenols [23,24], pesticides [25], bisphenol A (BPA) [26], landfill leachate [27] or coking wastewater [28], palm oil mill effluent [29], nitrite reduction [30], oil sands reclamation [31], surfactant removal [32], and hydraulic fracturing flow back fluid treatment [33].…”

Section: Introductionmentioning

confidence: 99%

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

et al. 2018

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Fossil fuel combustion is a serious environmental problem. Significant quantities of flue gasses and wastewater, requiring further treatment, are produced. This article compares three wet flue gas desulfurization (FGD) wastewater treatment methods: coagulation with precipitation using iron(III) ions-recommended by the European Union as the best available technique (BAT)-and two alternative advanced oxidation processes (Fe 2+ /H 2 O 2 and Fe 0 /H 2 O 2 ). Both oxidation processes that were used met the technical FGD wastewater treatment requirements of the BAT. The best treatment effects, expressed as pollutants' removal, were obtained for the Fe 2+ /H 2 O 2 process for 150/300 mg/L reagent doses. It allows effective removal of boron up to 212 mg/L and heavy metals up to below the detection limit <0.010 mg/L for Pb and <0.005 mg/L for Cu. Therefore, the Fe 2+ /H 2 O 2 process could be an option for FGD wastewater treatment as an alternative to the BAT recommended iron(III)-based coagulation with precipitation. Additionally, an analysis of variance was applied to check the significance of the two independent variables and their interactions. Statistical analysis confirmed high efficiency and applicability of treatment process.

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Section: Introductionmentioning

confidence: 99%

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

et al. 2018

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“…Typical disposal procedures for the NAW essentially cover three step reactions, i.e. acid–base neutralization and precipitation, advanced oxidation and biological treatment . However, this method is very costly because it applies massive amounts of expensive oxidants and alkali materials .…”

Section: Introductionmentioning

confidence: 99%

“…4,6,9 -12 However, this method is very costly because it applies massive amounts of expensive oxidants and alkali materials. 11 These shortcomings limit their wide application. Therefore, alternative strategies for a cheaper, simpler and greener treatment of NAW have been sought.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous oxidative degradation of toxic acid wastewater from production of nitrocellulose and release of Mn²⁺ from low-grade MnO₂ ore as oxidant

Cai

Zhou

Tian

et al. 2017

J. Chem. Technol. Biotechnol

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BACKGROUND The development of a low cost and simple treatment process is necessary for toxic organic effluents. This work investigated the feasibility of the oxidative degradation of toxic nitrocellulose acid wastewater (NAW) using low‐grade MnO2 ore as a cheap oxidant and the simultaneous release of Mn2+ for preparation of electrolytic manganese metal (EMM). RESULTS Under optimal conditions of 100 g L−1 MnO2 ore, 200‐mesh ore particles, concentrated H2SO4 to NAW ratio of 0.12:1, contact time 120 min, stirring speed 160 rpm and temperature 90 °C, the total organic carbon (TOC) removal of the NAW and Mn release efficiency reached 98% and 97%, respectively. The TOC removal was significantly correlated with the release of Mn. The inert layer model best described the extraction behavior of Mn and apparent activation energy was 54.1 kJ mol−1. Concomitant with TOC removal, the degradation of polysaccharide, phenol, protein and nitrocellulose occurred; meanwhile, the MnO2 totally dissolved owing to reductive extraction of Mn. CONCLUSION A highly significant correlation occurred between TOC removal and Mn2+ release, suggesting a reciprocal causation. The present process was competent to simultaneously realize oxidation degradation of NAW and reductive dissolution of Mn2+ for EMM production, displaying a promising application prospect. © 2016 Society of Chemical Industry

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“…Meanwhile, 2,4-dinitroanisole (DNAN) and TNT producing wastewater could be treated by the combined zero valent iron (ZVI) and Fenton oxidation process ( i.e. , Fe 0 -Fenton process) [5,14,15] . In additional, Oh et al found that Fenton oxidation of TNT and RDX could be improved through pretreatment with ZVI [16] .…”

Section: Introductionmentioning

confidence: 99%

Treatment of ammunition wastewater by the combined Fe 0 /air and Fenton process (1 st Fe 0 /air-Fenton-2 nd Fe 0 /air)

Yuan

Lai

Yang

et al. 2016

Journal of the Taiwan Institute of Chemical Engineers

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Optimization of Brazilian TNT industry wastewater treatment using combined zero-valent iron and fenton processes

Cited by 33 publications

References 17 publications

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

Simultaneous oxidative degradation of toxic acid wastewater from production of nitrocellulose and release of Mn²⁺ from low-grade MnO₂ ore as oxidant

Treatment of ammunition wastewater by the combined Fe 0 /air and Fenton process (1 st Fe 0 /air-Fenton-2 nd Fe 0 /air)

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Optimization of Brazilian TNT industry wastewater treatment using combined zero-valent iron and fenton processes

Cited by 33 publications

References 17 publications

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

Simultaneous oxidative degradation of toxic acid wastewater from production of nitrocellulose and release of Mn2+ from low-grade MnO2 ore as oxidant

Treatment of ammunition wastewater by the combined Fe 0 /air and Fenton process (1 st Fe 0 /air-Fenton-2 nd Fe 0 /air)

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Simultaneous oxidative degradation of toxic acid wastewater from production of nitrocellulose and release of Mn²⁺ from low-grade MnO₂ ore as oxidant