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Adsorption of low-concentration organic pollutants from typical coal-fired power plants by activated carbon injection.

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Title: Adsorption of low-concentration organic pollutants from typical coal-fired power plants by activated carbon injection.
Authors: Ma, Xiuwei1 (AUTHOR) maxiuwei099@163.com, Li, Shouyuan1 (AUTHOR) lishouyuan1996@qq.com, Hou, Yong1 (AUTHOR) 958807344@qq.com, Lv, Hao1 (AUTHOR) lvhao_0513@qq.com, Li, Jinjin1 (AUTHOR) lijinjinseu@163.com, Cheng, Tangying1 (AUTHOR) cty960427@126.com, Yang, Linjun1 (AUTHOR) ylj@seu.edu.cn, Wu, Hao2 (AUTHOR) wuhao4617@163.com
Source: Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B. Mar2022, Vol. 159, p1174-1183. 10p.
Subject Terms: *Activated carbon, *Coal-fired power plants, *Pollutants, *Flue gases, *Adsorption (Chemistry), *Fly ash, *Waste gases
Abstract: [Display omitted] Activated carbon (AC) injection was applied to remove the organic pollutants from coal-fired power plants. The total hydrocarbon (THC) concentration in flue gases was 0.512–0.998 mg/m3, aromatic hydrocarbons and oxygenated volatile organic compounds (VOCs) were the major components. With the AC injection (150 mg/m3), the THC was removed by 36.52–46.49%. The mesopores could capture some larger organic molecules and facilitate the intrapore diffusion. Improving the AC injection amount promoted the organic pollutant adsorption, but lowered the AC adsorption capacity. Removal performance of organic pollutants was affected by their physicochemical properties. The removal efficiency for most VOCs was within the range of 15–50%, while that was 45–90% for semi-VOCs. Minor amounts of VOCs achieved high removal efficiency through specific interactions, especially oxygenated VOCs. However, the removal efficiency of the total oxygenated VOCs was lower due to competition adsorption with inorganic components. AC injection had no significant effect on the physicochemical properties of fly ash. This work and results provide a feasible method and reference for the reduction of organic pollutants in coal-fired power plants and other combustion exhaust gases. [ABSTRACT FROM AUTHOR]
Copyright of Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Adsorption of low-concentration organic pollutants from typical coal-fired power plants by activated carbon injection.
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  Data: <searchLink fieldCode="AR" term="%22Ma%2C+Xiuwei%22">Ma, Xiuwei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> maxiuwei099@163.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Shouyuan%22">Li, Shouyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lishouyuan1996@qq.com</i><br /><searchLink fieldCode="AR" term="%22Hou%2C+Yong%22">Hou, Yong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 958807344@qq.com</i><br /><searchLink fieldCode="AR" term="%22Lv%2C+Hao%22">Lv, Hao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lvhao_0513@qq.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Jinjin%22">Li, Jinjin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lijinjinseu@163.com</i><br /><searchLink fieldCode="AR" term="%22Cheng%2C+Tangying%22">Cheng, Tangying</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cty960427@126.com</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Linjun%22">Yang, Linjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ylj@seu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wu%2C+Hao%22">Wu, Hao</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wuhao4617@163.com</i>
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  Data: *<searchLink fieldCode="DE" term="%22Activated+carbon%22">Activated carbon</searchLink><br />*<searchLink fieldCode="DE" term="%22Coal-fired+power+plants%22">Coal-fired power plants</searchLink><br />*<searchLink fieldCode="DE" term="%22Pollutants%22">Pollutants</searchLink><br />*<searchLink fieldCode="DE" term="%22Flue+gases%22">Flue gases</searchLink><br />*<searchLink fieldCode="DE" term="%22Adsorption+%28Chemistry%29%22">Adsorption (Chemistry)</searchLink><br />*<searchLink fieldCode="DE" term="%22Fly+ash%22">Fly ash</searchLink><br />*<searchLink fieldCode="DE" term="%22Waste+gases%22">Waste gases</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] Activated carbon (AC) injection was applied to remove the organic pollutants from coal-fired power plants. The total hydrocarbon (THC) concentration in flue gases was 0.512–0.998 mg/m3, aromatic hydrocarbons and oxygenated volatile organic compounds (VOCs) were the major components. With the AC injection (150 mg/m3), the THC was removed by 36.52–46.49%. The mesopores could capture some larger organic molecules and facilitate the intrapore diffusion. Improving the AC injection amount promoted the organic pollutant adsorption, but lowered the AC adsorption capacity. Removal performance of organic pollutants was affected by their physicochemical properties. The removal efficiency for most VOCs was within the range of 15–50%, while that was 45–90% for semi-VOCs. Minor amounts of VOCs achieved high removal efficiency through specific interactions, especially oxygenated VOCs. However, the removal efficiency of the total oxygenated VOCs was lower due to competition adsorption with inorganic components. AC injection had no significant effect on the physicochemical properties of fly ash. This work and results provide a feasible method and reference for the reduction of organic pollutants in coal-fired power plants and other combustion exhaust gases. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Process Safety & Environmental Protection: Transactions of the Institution of Chemical Engineers Part B is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.psep.2022.02.002
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 10
        StartPage: 1174
    Subjects:
      – SubjectFull: Activated carbon
        Type: general
      – SubjectFull: Coal-fired power plants
        Type: general
      – SubjectFull: Pollutants
        Type: general
      – SubjectFull: Flue gases
        Type: general
      – SubjectFull: Adsorption (Chemistry)
        Type: general
      – SubjectFull: Fly ash
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      – SubjectFull: Waste gases
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      – TitleFull: Adsorption of low-concentration organic pollutants from typical coal-fired power plants by activated carbon injection.
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              M: 03
              Text: Mar2022
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