Removal of tetramethylammonium hydroxide (TMAH) in semiconductor wastewater using the nano-ozone H2O2 process

Kim, Tae‐Kyoung; Kim, Taeyeon; Lee, Inae; Choi, Kyungho; Zoh, Kyung-Duk

doi:10.1016/j.jhazmat.2020.123759

Cited by 31 publications

(14 citation statements)

References 37 publications

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“…(4) Hydroxyl radicals have a higher standard redox potential than ozone and hydrogen peroxide [3,100,101]. The addition of H 2 O 2 enhances the formation of •OH in the system, which may be because the added H 2 O 2 oxidant can react with •OH to form •OH and promote the formation of •OH [102]. In addition, it can effectively inhibit the compound reaction of free radicals and enable •OH to decompose organic matter efficiently [17].…”

Section: Application Of Ozone Micro/nanobubbles To the Degradation Of...mentioning

confidence: 99%

“…In the presence of H O , the ozone oxidation system can generate HO in water and produce HO and H O , where HO reacts again to form • OH [102] with strong oxidation:…”

Section: Additive Effect Of 𝐻 𝑂mentioning

confidence: 99%

“…•OH + H 2 O 2 → HO 2 • + H 2 OIn the presence of H 2 O 2 , the ozone oxidation system can generate HO in water and produce HO 2− and H 3 O + , where HO 2 − reacts again to form •OH[102] with strong oxidation:O 3 + H 2 O 2 → •OH + HO 2 • + O 2 H 2 O 2 + H 2 O → HO 2 − + H 3 O + O 3 + HO 2 − → O 2 + O 2 − + •OH…”

mentioning

confidence: 99%

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Interaction Mechanisms and Application of Ozone Micro/Nanobubbles and Nanoparticles: A Review and Perspective

et al. 2022

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Ozone micro/nanobubbles with catalytic processes are widely used in the treatment of refractory organic wastewater. Micro/nanobubble technology overcomes the limitations of ozone mass transfer and ozone utilization in the application of ozone oxidation, and effectively improves the oxidation efficiency of ozone. The presence of micro/nanobubbles keeps the catalyst particles in a dynamic discrete state, which effectively increases the contact frequency between the catalyst and refractory organic matter and greatly improves the mineralization efficiency of refractory organic matter. This paper expounds on the characteristics and advantages of micro/nanobubble technology and summarizes the synergistic mechanism of microbubble nanoparticles and the mechanism of catalyst ozone micro/nanobubble systems in the treatment of refractory organics. An interaction mechanism of nanoparticles and ozone microbubbles is suggested, and the proposed theories on ozone microbubble systems are discussed with suggestions for future studies on systems of nanoparticles and ozone microbubbles.

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Section: Application Of Ozone Micro/nanobubbles To the Degradation Of...mentioning

confidence: 99%

“…In the presence of H O , the ozone oxidation system can generate HO in water and produce HO and H O , where HO reacts again to form • OH [102] with strong oxidation:…”

Section: Additive Effect Of 𝐻 𝑂mentioning

confidence: 99%

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Interaction Mechanisms and Application of Ozone Micro/Nanobubbles and Nanoparticles: A Review and Perspective

et al. 2022

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“…However, we still have a long way to go to ensure complete control of persistent pollutants. For example, tetramethylammonium hydroxide (TMAH, C 4 H 13 NO), which is used as an etching agent in the photolithography process of the semiconductor industry, is considered difficult to eliminate by secondary (i.e., biological) wastewater treatment in that it is highly likely to inactivate microorganisms in the activated sludge used for biological wastewater treatment [3]. When it comes to the pollutants involved in the wastewater discharged from pharmaceutical, cosmetic, edible oil, paint, fur, leather, paper, and textile manufacturing industries [4][5][6][7][8][9], it is not too much to say that dyes could be second to none from the perspective of priority for removal from wastewater considering that they pose significant harm to humans.…”

Section: Introductionmentioning

confidence: 99%

Zero Discharge of Dyes and Regeneration of a Washing Solution in Membrane-Based Dye Removal by Cold Plasma Treatment

et al. 2022

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Although dye removal from wastewater streams has been investigated via several approaches using adsorbents, resins, or membranes, it is still hard to avoid the fact that dyes are persistently left in the adsorption materials or washing solutions used to regenerate the used adsorbents. In particular, given that cleaning agents are composed of acid/base, organic solvents, or electrolytes, dye adsorption and adsorbent regeneration processes leave behind more hard-to-manage wastewater containing dyes. In this study, we demonstrated that cold plasma (CP) treatment, which is one of the advanced oxidation processes (AOPs), can be used for zero discharge of dyes and regeneration of a washing solution in a membrane-based dye removal process. Specifically, CP treatment was found to successfully remove dyes released from a washing process to regenerate a used membrane, thereby effectively recycling a cleaning solution. As a result, the regenerated washing solution was more favorable for the adsorbed dyes’ elution, leading to the successful regeneration of a used membrane without a significant loss of dye removal efficiency. This fact was evidenced by a comparative study on the effect of CP treatment on the reusability of membranes and washing solutions and the kinetic analysis of the AOP of the desorbed dyes. We hope that this study contributes to opening a new door for environmentally friendly and sustainable dye removal.

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“…Ionic gelation is an efficient method to prepare chitosan nanoparticles (CHI-NPs). The base of the technique is the electrostatic interaction between a cationic polymer and a negatively charged compound [12,13].…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterisation and comparative toxicity of nanopermethrin against Anophelesstephensi and Culexpipiens

Ebrahimnejad

Nikookar

Fazeli‐Dinan

et al. 2021

Tropical Med Int Health

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Objectives To assess the effectiveness of nanopermethrin as a potential new formulation for pest and vector control. Methods Permethrin nanoparticles were prepared by the ionic gelation method and its structure and the formulations were designed using Box–Behnken statistical technique. The effect of independent variables (Chitosan/Permethrin ratio, tripolyphosphate quantity, sonication time) on the properties of nanoparticles was investigated to determine the optimal formulation. Results The size of the nanoparticles ranged from 135.27 ± 5.88 to 539.5 ± 24.01 nm and the insecticide entrapment efficiency per cent (EE%) ranged from 7.72 ± 1.36 to 63.59 ± 3.17%. Anopheles stephensi larvae were then bioassayed with the nanopermethrin and compared with the results of the bioassay with the mother molecule of permethrin using a standard WHO‐recommended mosquito larval bioassay kit. LC50 with permethrin and nanopermethrin on larvae of An. stephensi were 0.125 and 0.026 ppm showing a 4.8 times difference. The LC50 for permethrin and nanopermethrin on Culex pipiens were 0.003 and 0.00032 ppm, respectively, showing a 9.4‐fold difference. Conclusion Nanopermethrin is much more potent than its mother molecule against larvae of An. stephensi and Cx. pipiens.

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Removal of tetramethylammonium hydroxide (TMAH) in semiconductor wastewater using the nano-ozone H2O2 process

Cited by 31 publications

References 37 publications

Interaction Mechanisms and Application of Ozone Micro/Nanobubbles and Nanoparticles: A Review and Perspective

Interaction Mechanisms and Application of Ozone Micro/Nanobubbles and Nanoparticles: A Review and Perspective

Zero Discharge of Dyes and Regeneration of a Washing Solution in Membrane-Based Dye Removal by Cold Plasma Treatment

Preparation, characterisation and comparative toxicity of nanopermethrin against Anophelesstephensi and Culexpipiens

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