Overlooked CO 2 emissions induced by air pollution control devices in coal-fired power plants.

Autor: Zhang P; Institute of Blue and Green Development, Shandong University, Weihai, 264209, PR China., Feng K; Institute of Blue and Green Development, Shandong University, Weihai, 264209, PR China.; Department of Geographical Sciences, University of Maryland, College Park, USA., Yan L; Chinese Academy of Environmental Planning, Beijing, 100012, PR China., Guo Y; Department of Earth System Science, Tsinghua University, Beijing, 100084, PR China., Gao B; School of Business, Shandong University, Weihai, 264209, PR China., Li J; Institute of Blue and Green Development, Shandong University, Weihai, 264209, PR China.; Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, 810016, PR China.
Jazyk: angličtina
Zdroj: Environmental science and ecotechnology [Environ Sci Ecotechnol] 2023 Jul 05; Vol. 17, pp. 100295. Date of Electronic Publication: 2023 Jul 05 (Print Publication: 2024).
DOI: 10.1016/j.ese.2023.100295
Abstrakt: China's efforts to mitigate air pollution from its large-scale coal-fired power plants (CFPPs) have involved the widespread use of air pollution control devices (APCDs). However, the operation of these devices relies on substantial electricity generated by CFPPs, resulting in indirect CO 2 emissions. The extent of CO 2 emissions caused by APCDs in China remains uncertain. Here, using a plant-level dataset, we quantified the CO 2 emissions associated with electricity consumption by APCDs in China's CFPPs. Our findings reveal a significant rise in CO 2 emissions attributed to APCDs, increasing from 1.48 Mt in 2000 to 51.7 Mt in 2020. Moreover, the contribution of APCDs to total CO 2 emissions from coal-fired power generation escalated from 0.12% to 1.19%. Among the APCDs, desulfurization devices accounted for approximately 80% of the CO 2 emissions, followed by dust removal and denitration devices. Scenario analysis indicates that the lifespan of CFPPs will profoundly impact future emissions, with Nei Mongol, Shanxi, and Shandong provinces projected to exhibit the highest emissions. Our study emphasizes the urgent need for a comprehensive assessment of environmental policies and provides valuable insights for the integrated management of air pollutants and carbon emissions in CFPPs.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2023 The Authors.)
Databáze: MEDLINE
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