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Advances in Air Pollutant Treatment Technology

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 2437

Special Issue Editor


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Guest Editor
School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Interests: treatment of waste gases from stationary sources; clean fuel; environmental catalysis
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Special Issue Information

Dear Colleagues,

Over the last few decades, human social development is based on the consumption of sources (e.g., coal, crude oil, natural gas), and the development of urbanization and industrialization has also generated serious air pollution problems. The double pressure of atmospheric quality using various air pollutants (e.g., SO2, NOx, VOCs, H2S, PM, and Hg), together with greenhouse gases (e.g., CO2), is driving the development of air pollutant treatment technology. During this process, innovative methods of capturing, converting, and utilizing air pollutants have been invented and implemented. There is a need to provide a unique opportunity for researchers to present and discuss recent advances in air pollutant treatment and air quality management. Papers addressing these topics are invited for this Special Issue, especially those combining a high academic standard coupled with optimal air pollutant treatment technology. We sincerely hope that the most up-to-date views and outlooks in the field in this Special Issue will advance the research frontier and improve our understanding of air pollutant control technologies. We expect that these cutting-edge articles will promote discussions among established scientists and also benefit the journal readers.

Prof. Dr. Rui Wang
Guest Editor

Manuscript Submission Information

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Keywords

  • air pollutant
  • SO2
  • NOx
  • VOCs
  • H2S
  • PM
  • Hg
  • CO2
  • capture
  • conversion
  • utilization

Published Papers (1 paper)

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Research

15 pages, 2830 KiB  
Article
Effective Absorption of Dichloromethane Using Carboxyl-Functionalized Ionic Liquids
by Mengjun Wang, Manman Zhang, Shaojuan Zeng, Yi Nie, Tao Li, Baozeng Ren, Yinge Bai and Xiangping Zhang
Int. J. Environ. Res. Public Health 2023, 20(10), 5787; https://doi.org/10.3390/ijerph20105787 - 11 May 2023
Cited by 1 | Viewed by 1924
Abstract
Dichloromethane (DCM) is recognized as a very harmful air pollutant because of its strong volatility and difficulty to degrade. Ionic liquids (ILs) are considered as potential solvents for absorbing DCM, while it is still a challenge to develop ILs with high absorption performances. [...] Read more.
Dichloromethane (DCM) is recognized as a very harmful air pollutant because of its strong volatility and difficulty to degrade. Ionic liquids (ILs) are considered as potential solvents for absorbing DCM, while it is still a challenge to develop ILs with high absorption performances. In this study, four carboxyl-functionalized ILs—trioctylmethylammonium acetate [N1888][Ac], trioctylmethylammonium formate [N1888][FA], trioctylmethylammonium glycinate [N1888][Gly], and trihexyl(tetradecyl)phosphonium glycinate [P66614][Gly]—were synthesized for DCM capture. The absorption capacity follows the order of [P66614][Gly] > [N1888][Gly] > [N1888][FA] > [N1888][Ac], and [P66614][Gly] showed the best absorption capacity, 130 mg DCM/g IL at 313.15 K and a DCM concentration of 6.1%, which was two times higher than the reported ILs [Beim][EtSO4] and [Emim][Ac]. Moreover, the vapor–liquid equilibrium (VLE) of the DCM + IL binary system was experimentally measured. The NRTL (non-random two-liquid) model was developed to predict the VLE data, and a relative root mean square deviation (rRMSD) of 0.8467 was obtained. The absorption mechanism was explored via FT-IR spectra, 1H-NMR, and quantum chemistry calculations. It showed a nonpolar affinity between the cation and the DCM, while the interaction between the anion and the DCM was a hydrogen bond. Based on the results of the study of the interaction energy, it was found that the hydrogen bond between the anion and the DCM had the greatest influence on the absorption process. Full article
(This article belongs to the Special Issue Advances in Air Pollutant Treatment Technology)
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