A novel green technology: reducing carbon dioxide and eliminating methane from the atmosphere

Tingzhen Ming, Hanbing xiong, Tianhao Shi, Yongjia Wu, Caixia Wang, Yuangao Wen, Wei Li, Renaud de Richter, Nan Zhou

Research output: Contribution to journalArticlepeer-review

Abstract

The greenhouse effect is exacerbated as greenhouse gas concentrations rise. Capturing and degrading methane in the atmosphere can effectively slow the trend of global temperature rise. The solar chimney power plant integrated with photocatalytic reactor (SCPP-PCR) is a promising concept for both clean electricity generation and large-scale atmospheric methane removal. In this paper, this concept was for the first time quantitatively verified by integrating a photocatalytic reactor in the collector of SCPP to realize the above two targets. A systematic numerical model was proposed to evaluate the performance of degradation of methane and the electricity generation of the SCPP-PCR. The results revealed that the methane purification rate decreased with increasing turbine rotational speed, but the photocatalytic efficiency improved. In this research, the start of the PCR was set at the entrance of the collector, and it was cost-effective to lay 40 m in the radial direction with an investment of $4587 (around 0.37% of the total investment of the system). The system could degrade 30 595.47 g of atmospheric methane and reduce CO 2 emissions by 245.38 kg in the daytime in Wuhan. It was revealed that SCPP-PCR could be crucial for reducing greenhouse gas and limiting climate change.

Original languageEnglish
Pages (from-to)20107-20120
JournalInternational Journal of Energy Research
Volume46
Issue number14
Early online date11 Sep 2022
DOIs
Publication statusPublished - Nov 2022

Keywords

  • CO emissions reduction
  • greenhouse gas removal
  • methane photocatalysis
  • photocatalytic reactor
  • solar chimney

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