Efficient utilization of free radicals in advanced oxidation processes under high-gravity environment for disposing pollutants in effluents and gases: A critical review

Duan, Xiaoxi; Lü, Zhicheng; Sun, Baochang; Wu, Shao; Qian, Zhi

doi:10.1016/j.chemosphere.2023.139057

Cited by 7 publications

(2 citation statements)

References 156 publications

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“…This mechanism significantly enhances the gas–liquid contact area and the mass-transfer coefficient. Consequently, high-gravity technology has demonstrated efficacy in treating pollutants in effluents and gases, including off-gases containing SO 2 , CO 2 , NO X , and nitrobenzene wastewater, as well as coal gasification wastewater. − In addition, the high-gravity device is distinguished by a short residence time, providing it with an advantage in selective absorption processes. Notably, selective absorption of H 2 S from CO 2 has been achieved by minimizing CO 2 absorption in the high-gravity device. , …”

Section: Introductionmentioning

confidence: 99%

Selective Absorption of HCl from a Gas Mixture with CO₂ by Alkali Solution in a Rotor–Stator Reactor

Xiao,

Wu,

Song

et al. 2024

Ind. Eng. Chem. Res.

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This study proposes the utilization of a rotor–stator reactor (RSR) to address the issue of excessive alkali consumption by CO2 in the treatment of off-gas containing HCl and CO2 in conventional columns. First, an investigation was conducted to explore the interaction between HCl absorption and CO2 absorption by alkali solution in the RSR. The results revealed that no discernible interaction between HCl and CO2 absorption occurred in the RSR under the typical concentrations of HCl and CO2 in off-gas. Subsequently, the absorption performances of HCl and CO2 by using different absorbents in the RSR were explored. It was observed that the absorption of HCl by both water and alkali solution in the RSR demonstrated negligible disparities. This may be attributed to the high liquid-side mass-transfer coefficient in the RSR, which mitigated the intensification effect of the reaction on the mass transfer of HCl. According to these findings, a selective absorption process for HCl from a gas mixture containing CO2 employing an alkali solution during a recycle operation in the RSR was implemented. This process facilitated the desorption of CO2 absorbed in the initial stage by lowering the final pH during the recycling operation, resulting in zero consumption of alkali by CO2. Although the process based on the packed column can selectively absorb HCl by intensification such as multiple columns in series, the smaller size of RSR will save the cost of equipment investment.

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Section: Introductionmentioning

confidence: 99%

Selective Absorption of HCl from a Gas Mixture with CO₂ by Alkali Solution in a Rotor–Stator Reactor

Xiao,

Wu,

Song

et al. 2024

Ind. Eng. Chem. Res.

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“…Additionally, the accumulation of TC has led to antibiotic resistance genes (ARGs) in bacteria . Currently, the main degradation methods of tetracycline include adsorption, electrochemical methods, advanced oxidation processes, photocatalysis, and biodegradation . Among these, photocatalysis technology is seen to be a potential way to deal with major environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

CuS Nanoparticles/MIL-125(Ti) Heterojunction as Photocatalyst for the Photodegradation of Tetracycline

Xi,

Liu,

Fei

et al. 2024

ACS Appl. Nano Mater.

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is an attractive material in photocatalysis due to its notable characteristics, including its expansive specific surface area, porous structure, high thermal stability, and chemical resistance. Unfortunately, the high electron−hole recombination rate and weak utilization of visible light restrict its practical application. Here, a CuS nanoparticle/MIL-125(Ti) heterojunction with a compact interface contact was prepared by a facile hydrothermal method for photocatalytic tetracycline degradation. The aligned internal electric field and interface structure of the CuS nanoparticles/MIL-125(Ti) heterojunction show promise in effectively addressing the aforementioned challenges. Detailed characterization showed that CuS nanoparticles/MIL-125(Ti) generated a redshift in light absorption, and the photogenerated electron−hole recombination rate was reduced by about 67.5% compared with MIL-125(Ti), greatly improving the photocatalytic performance. Photogenerated electrons between the conductive band of CuS nanoparticles and MIL-125(Ti) with Ti 4+ to Ti 3+ reduction contributed to the enhanced photocatalytic performance, and the generated active species (h + , •OH, •O 2 − ) degraded tetracycline rapidly. The kinetic parameters of tetracycline degradation by the CuS/MIL-125(Ti) composite with an optimal doping amount are 12.7 and 7.9 times higher than those of a single component.

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Investigations of the photoelectrochemical and photo-Fenton properties of TiO2/FeOCl nanocomposites

Yu,

Ma,

Wei

et al. 2024

J Mater Sci: Mater Electron

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Efficient utilization of free radicals in advanced oxidation processes under high-gravity environment for disposing pollutants in effluents and gases: A critical review

Cited by 7 publications

References 156 publications

Selective Absorption of HCl from a Gas Mixture with CO₂ by Alkali Solution in a Rotor–Stator Reactor

Selective Absorption of HCl from a Gas Mixture with CO₂ by Alkali Solution in a Rotor–Stator Reactor

CuS Nanoparticles/MIL-125(Ti) Heterojunction as Photocatalyst for the Photodegradation of Tetracycline

Investigations of the photoelectrochemical and photo-Fenton properties of TiO2/FeOCl nanocomposites

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Efficient utilization of free radicals in advanced oxidation processes under high-gravity environment for disposing pollutants in effluents and gases: A critical review

Cited by 7 publications

References 156 publications

Selective Absorption of HCl from a Gas Mixture with CO2 by Alkali Solution in a Rotor–Stator Reactor

Selective Absorption of HCl from a Gas Mixture with CO2 by Alkali Solution in a Rotor–Stator Reactor

CuS Nanoparticles/MIL-125(Ti) Heterojunction as Photocatalyst for the Photodegradation of Tetracycline

Investigations of the photoelectrochemical and photo-Fenton properties of TiO2/FeOCl nanocomposites

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Product

Resources

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Selective Absorption of HCl from a Gas Mixture with CO₂ by Alkali Solution in a Rotor–Stator Reactor

Selective Absorption of HCl from a Gas Mixture with CO₂ by Alkali Solution in a Rotor–Stator Reactor