Removal of bromoamine acid in dye wastewater by gas-liquid plasma: The role of ozone and hydroxyl radical

Xin, Yiying; Zhou, Lyu; Ma, Ke; Lee, Joono; Qazi, Hafiz Imran Ahmad; Li, Heping; Bao, Cheng-Yu; Zhou, Yuexi

doi:10.1016/j.jwpe.2020.101457

Cited by 33 publications

(10 citation statements)

References 40 publications

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“…The same phenomenon was observed on ammonia oxidation: it was completely removed as current density of mA/cm 2 was applied. These results were consistent with other studies: high current density could accelerate the generation of active radicals and thus promote the pollutant removal (Li et al, 2020).…”

Section: Effect Of the Main Parameterssupporting

confidence: 94%

“…Biological treatment has been considered as one of the most cost-effective technologies for biodegradation of organic and nitrogen pollutants (Paz et al, 2017); but some nonbiodegradable dyes impede biological activity, even causing the death of microorganism (Chen et al, 2019). Other techniques such as Fenton (Esteves et al, 2016), ozone oxidation (Xin et al, 2020), and membrane filtration (Cao et al, 2020), are also proposed for treating such wastewater; however, the potential secondary byproducts hinder their wide applications (Bae et al, 2015;Yao et al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

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A Novel Method for Efficient Electrochemical Treatment of Actual Dyeing Wastewater With Energy Saving

Yao

Wang

et al. 2021

Preprint

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Electro-oxidation is a promising technology for wastewater treatment with bio-refractory organic and nitrogen pollutants; however, the high energy-demanding hinders its wide application. In this study, a novel method by regulating the significant parameter during electro-oxidation process timely for actual dyeing wastewater treatment with energy saving was studied. Operating factors (i.e., flow rate, initial pH value, electrode distance, and current density) were investigated for chemical oxygen demand (COD) and ammonia removal, and results indicated that current density was the key factor which obviously influenced the electrochemical performance. Indirect oxidation by active chlorine was then confirmed as the main reaction pathway for pollutants oxidation, and the relationship between the current density and the generation of active chlorine was established, suggesting that a large part of the generated active chlorine was not utilized effectively. Subsequently, a novel method by variation of current density timely based on the reaction mechanism was proposed; results indicated that, with similar pollutant removal efficiency, energy consumption could be reduced from 31.6 kWh/m3 to 20.5 kWh/m3. Additionally, the novel system was further optimized by Box-Behnken design: COD and ammonia removal efficiencies could reach 71.8% and 100% respectively, and energy-demanding could be reduced by 45.6%.

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Section: Effect Of the Main Parameterssupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

A Novel Method for Efficient Electrochemical Treatment of Actual Dyeing Wastewater With Energy Saving

Yao

Wang

et al. 2021

Preprint

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“…Thereafter, the authors claimed that their technology is environmentally benign and could be explored in wastewater treatment facilities. Similar investigations using plasma jet for wastewater remediation have also been reported in the literature Xin et al [ 147 ]. Apart from this, plasma jet has also been used in mass spectrometry analysis for direct detection of compounds from surfaces and complex matrices [ 148 ].…”

Section: Overview Of the Plasma Processsupporting

confidence: 81%

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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“…formed through direct and indirect electron collision process and chemical reaction (Malik et al 2016). Xin et al (Xin et al 2020) applied gas-liquid plasma to remove bromoamine acid in dye wastewater and efficient removal was achieved by the system within 15 min treatment. Feng et al (Feng et al 2016) used a wire cylinder DBD reactor to remove atrazine in aqueous solution and 93.7% of degradation rate and 12.7% of TOC removal rate were achieved after 18 min of treatment.…”

Section: Introductionmentioning

confidence: 99%

Degradation of carbamazepine by high-voltage direct current gas-liquid plasma with the addition of H2O2 and Fe2+

Yan

Zhu

et al. 2022

Preprint

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Carbamazepine (CBZ) is a typical psychotropic pharmaceutical which is one of the most commonly detected persistent pharmaceuticals in the environment. The degradation of CBZ in the aqueous solution was studied by a direct current (DC) gas-liquid phase discharge plasma combined with different catalysts (H2O2 or Fe2+) in this study. The concentrations of reactive species (H2O2, O3, and NO3− ) and •OH radical yield in the liquid were measured during the discharge process. The various parameters that affect the degradation of CBZ, such as discharge powers, initial concentrations, initial pH values, and addition of catalysts, were investigated. The results indicated that a discharge power at 35.7W achieved the optimal balance on the degradation effect and energy efficiency, and both acidic and alkaline solution conditions were conducive to promoting the degradation of CBZ. Both H2O2 and Fe2+ at low concentration (10–100mg/L of Fe2+, 0.05–2.0 mmol/L of H2O2) were observed contributing to the improvement of the CBZ degradation rate, while the promotional effect of CBZ degradation was weakened even inhibition would occur at high concentrations (100–200 mg/L of Fe2+, 2.0–5.0 mmol/L of H2O2). Furthermore, the total organic carbon (TOC) removal efficiency of CBZ was up to 67.1% in the plasma/Fe2+ (100mg/L) system at 48 min, which suggested a high mineralization efficiency on CBZ could be achieved by employing Fe2+ as a catalyst. Based on the intermediate products identified by UPLC–MS, the possible degradation pathways were proposed. Finally, the growth inhibition assay with E. coli showed that the toxicity of plasma/Fe2+-treated CBZ solution decreased and a relatively low solution toxicity could be achieved. Thus, the plasma/catalyst could be an effective technology for the degradation of pharmaceuticals in aqueous solutions.

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Removal of bromoamine acid in dye wastewater by gas-liquid plasma: The role of ozone and hydroxyl radical

Cited by 33 publications

References 40 publications

A Novel Method for Efficient Electrochemical Treatment of Actual Dyeing Wastewater With Energy Saving

A Novel Method for Efficient Electrochemical Treatment of Actual Dyeing Wastewater With Energy Saving

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

Degradation of carbamazepine by high-voltage direct current gas-liquid plasma with the addition of H2O2 and Fe2+

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