Toxic wastes treatment using different configurations of plasma torches

Torres, C; Pacheco, J.; Pacheco, Marquidia; Ramos, F; Cruz, Antonio Carlos da; Durán, M; Hidalgo, M. A.

doi:10.1088/0031-8949/2008/t131/014015

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…On the other hand, the oily waste sludge (OWS) is a toxic residue regularly produced in petrochemical industries and is considered as a harmful waste that requires absolute treatment. Torres et al [ 129 ] applied a non-transferred plasma torch (NTPT) and transferred plasma torch (TPT) for the treatment of OWS at the applied conditions (OWS solution injection feed rates varied from 0.25 to 5.8 g min −1 , plasma torch power ranging from 1 to 10 kW and plasma gas flow rate of 20 m 3 h − 1 ). Their outcome indicated that 99.99% degradation of organic substances and 95.5% volume reduction were achieved.…”

Section: Overview Of the Plasma Processmentioning

confidence: 99%

Removal of Pharmaceutical Residues from Water and Wastewater Using Dielectric Barrier Discharge Methods—A Review

Mouele

Tijani

Badmus

et al. 2021

IJERPH

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Persistent pharmaceutical pollutants (PPPs) have been identified as potential endocrine disruptors that mimic growth hormones when consumed at nanogram per litre to microgram per litre concentrations. Their occurrence in potable water remains a great threat to human health. Different conventional technologies developed for their removal from wastewater have failed to achieve complete mineralisation. Advanced oxidation technologies such as dielectric barrier discharges (DBDs) based on free radical mechanisms have been identified to completely decompose PPPs. Due to the existence of pharmaceuticals as mixtures in wastewater and the recalcitrance of their degradation intermediate by-products, no single advanced oxidation technology has been able to eliminate pharmaceutical xenobiotics. This review paper provides an update on the sources, occurrence, and types of pharmaceuticals in wastewater by emphasising different DBD configurations previously and currently utilised for pharmaceuticals degradation under different experimental conditions. The performance of the DBD geometries was evaluated considering various factors including treatment time, initial concentration, half-life time, degradation efficiency and the energy yield (G50) required to degrade half of the pollutant concentration. The review showed that the efficacy of the DBD systems on the removal of pharmaceutical compounds depends not only on these parameters but also on the nature/type of the pollutant.

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Section: Overview Of the Plasma Processmentioning

confidence: 99%

Removal of Pharmaceutical Residues from Water and Wastewater Using Dielectric Barrier Discharge Methods—A Review

Mouele

Tijani

Badmus

et al. 2021

IJERPH

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“…Plasma treatment of a broad range of wastes has been reported in the literature, namely: MSW [46][47][48][49][50][51][52]; plastic waste [53][54][55][56][57][58]; biomass waste [14,43,[59][60][61][62][63][64][65][66][67]; liquid and solid hazardous waste, such as radioactive [68][69][70][71][72], toxic [47,[73][74][75][76][77][78][79][80], medical [41,[81][82][83], ash [84][85][86][87].…”

Section: Plasma Treatment Of Hazardous Wastesmentioning

confidence: 99%

“…Non-transferred and transferred plasma torches have been used to destroy oily wastes sludge in [73]. Optimal operational conditions in favor of H 2 and CH 4 production were obtained.…”

Section: Plasma Treatment Of Hazardous Wastesmentioning

confidence: 99%

Plasmas for environmental issues: from hydrogen production to 2D materials assembly

Tatarova¹,

Bundaleska²,

Sarrette³

et al. 2014

Plasma Sources Sci. Technol.

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It is well recognized at present that the unique, high energy density plasma environment provides suitable conditions to dissociate/atomize molecules in remediation systems, to convert waste and biomass into sustainable energy sources, to purify water, to assemble nanostructures, etc. The remarkable plasma potential is based on its ability to supply simultaneously high fluxes of charged particles, chemically active molecules, radicals (e.g. O, H, OH), heat, highly energetic photons (UV and extreme UV radiation), and strong electric fields in intrinsic sheath domains. Due to this complexity, low-temperature plasma science and engineering is a huge, highly interdisciplinary field that spans many research disciplines and applications across many areas of our daily life and industrial activities. For this reason, this review deals only with some selected aspects of low-temperature plasma applications for a clean and sustainable environment. It is not intended to be a comprehensive survey, but just to highlight some important works and achievements in specific areas. The selected issues demonstrate the diversity of plasma-based applications associated with clean and sustainable ambiance and also show the unity of the underlying science. Fundamental plasma phenomena/processes/features are the common fibers that pass across all these areas and unify all these applications. Browsing through different topics, we try to emphasize these phenomena/processes/features and their uniqueness in an attempt to build a general overview. The presented survey of recently published works demonstrates that plasma processes show a significant potential as a solution for waste/biomass-to-energy recovery problems. The reforming technologies based on non-thermal plasma treatment of hydrocarbons show promising prospects for the production of hydrogen as a future clean energy carrier. It is also shown that plasmas can provide numerous agents that influence biological activity. The simultaneous generation in water discharges of intense UV radiation, shock waves and active radicals (OH, O, H 2 O 2 , etc), which are all effective agents against many biological pathogens and harmful chemicals, make these discharges suitable for decontamination, sterilization and purification processes. Moreover, plasmas appear as invaluable tools for the synthesis and engineering of new nanomaterials and in particular 2D materials. A brief overview on plasma-synthesized carbon nanostructures shows the high potential of such materials for energy conversion and storage applications.

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“…Vitrification was carried out in a system shown in The plasma torch has a tungsten cathode which is connected to a DC power supply controlled by a Buck converter [6] at a constant current. The arc is ignited by applying high voltage impulsions between the cathode and the torch nozzle [7] .…”

Section: Transferred Plasmamentioning

confidence: 99%

Mixed Wastes Vitrification by Transferred Plasma

Tapia-Fabela¹,

Pacheco-Pacheco²,

Pacheco-Sotelo³

et al. 2007

Plasma Sci. Technol.

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Thermal plasma technology provides a stable and long term treatment of mixed wastes through vitrification processes. In this work, a transferred plasma system was realized to vitrify mixed wastes, taking advantage of its high power density, enthalpy and chemical reactivity as well as its rapid quenching and high operation temperatures.To characterize the plasma discharge, a temperature diagnostic is realized by means of optical emission spectroscopy (OES). To typify the morphological structure of the wastes samples, scanning electron microscopy (SEM), and X-ray diffraction (XRD) techniques were applied before and after the plasma treatment.

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Toxic wastes treatment using different configurations of plasma torches

Cited by 6 publications

References 5 publications

Removal of Pharmaceutical Residues from Water and Wastewater Using Dielectric Barrier Discharge Methods—A Review

Removal of Pharmaceutical Residues from Water and Wastewater Using Dielectric Barrier Discharge Methods—A Review

Plasmas for environmental issues: from hydrogen production to 2D materials assembly

Mixed Wastes Vitrification by Transferred Plasma

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