Simultaneous removal of carbon dioxide, sulfur dioxide and nitric oxide in a biofilter system : Optimization operating conditions, removal efficiency and bacterial community

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Peng Xie
  • Chun-Li Li
  • Bo Shao
  • Xi-Jun Xu
  • Xu-Dong Chen
  • Lei Zhao
  • Xu Zhou
  • Nan-Qi Ren
  • Chuan Chen

Detail(s)

Original languageEnglish
Article number130084
Journal / PublicationChemosphere
Volume276
Online published8 Mar 2021
Publication statusPublished - Aug 2021
Externally publishedYes

Abstract

Anthropogenic NOx, SO2 and CO2 emission from the fossil-fuel-fired power plants has aroused growing attention. This study investigated the removal performance of CO2, SO2 and NOx in flue gas as well as conversion efficiency of nitric- and sulfur-compounds in liquid phase in a biofilter. In order to develop the potential of the biofilter, simulative industry wastewater was employed as the spray solution. The satisfactory flue gas removal performance (75.23% CO2, 100% SO2 and 82.81% NO) were achieved under the optimal operating conditions of biofilter: initial solution pH of 9 and liquid-gas ratio (L/G) of 3. The gas film mass transfer coefficients (kGa) results showed that the resistance of gas mass transfer was decreased with increasing the pH value and L/G ratio, respectively. The final transformation product of NO was mostly N2 while about 78% SO2 was converted to elemental sulfur. The microbial community analysis results showed that the relative abundance of bacteria with denitrification capacity was increased by 3.05% which might have contributed to the conversion of NO intermediates products in present study. Collectively, this biofilter system achieve a better flue gas removal performance via the proper operation system, which provides an economic feasible strategy of flue gas purification and increases potential for industrial application.

Research Area(s)

  • Biofilter, Denitrification, Desulphurization, Flue gas, Gas film mass transfer coefficients

Citation Format(s)

Simultaneous removal of carbon dioxide, sulfur dioxide and nitric oxide in a biofilter system: Optimization operating conditions, removal efficiency and bacterial community. / Xie, Peng; Li, Chun-Li; Shao, Bo et al.
In: Chemosphere, Vol. 276, 130084, 08.2021.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review