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<p>Flue Gas Desulfurization (FGD) gypsum is an industrial byproduct generated during the desulfurization of flue gases in coal-fired power plants and presents persistent challenges regarding environmental risks from stockpiling and pathways for high-value utilization. In this study, a pioneering bibliometric analysis of 629 SCIE-indexed publications on FGD gypsum from 1985 to 2024 was conducted, revealing an evolutionary trajectory across four distinct phases: during the embryonic stage (2009–2015), the number of annual publications ranged from only 3 to 13; during the incubation stage (2016–2018), this number increased to 24–38 articles per year, and during the development stage (2019–2021) and in-depth development stage (2022–2024), publication count increased to 49–112 annually, with the latter phase alone accounting for 48.2% of the total papers across all four stages. Analysis of collaboration networks revealed that China and the United States were the leading contributors, representing 76.0% and 13.0% of total publications, respectively. Chinese institutions dominate the research landscape, accounting for 85% of the top 20 organizations globally in terms of FGD gypsum. FGD gypsum applications prioritize environmental protection, such as soil remediation, and construction, including the use of cement additives. Nevertheless, keyword and thematic evolution analyses reveal a notable recent shift: research focus is expanding from conventional material properties toward environmental remediation, particularly for low-carbon technologies such as mineral carbonation for CO₂ sequestration. Utilization of FGD gypsum remains limited by impurities, market acceptance, transportation costs, policies, and technological constraints, and future research should prioritize overcoming these technological challenges. On the basis of an extensive review and quantitative analysis, this study synthesizes global research outcomes on FGD gypsum. As the first comprehensive bibliometric review dedicated specifically to FGD gypsum, this study not only maps the knowledge landscape but also provides actionable insights for the transformation of waste into a resource. This study offers strategic references for researchers, policymakers, and industry stakeholders to advance sustainable management and high-value utilization of FGD gypsum.</p>

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Global Research Hotspots and Trends on Flue Gas Desulfurization Gypsum: A Bibliometric Analysis

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • Pengcheng Wan,
  • Xianhai Li,
  • Linyu Xu,
  • Wei Cheng,
  • Xue Wang,
  • Wenlong Mo

摘要

Flue Gas Desulfurization (FGD) gypsum is an industrial byproduct generated during the desulfurization of flue gases in coal-fired power plants and presents persistent challenges regarding environmental risks from stockpiling and pathways for high-value utilization. In this study, a pioneering bibliometric analysis of 629 SCIE-indexed publications on FGD gypsum from 1985 to 2024 was conducted, revealing an evolutionary trajectory across four distinct phases: during the embryonic stage (2009–2015), the number of annual publications ranged from only 3 to 13; during the incubation stage (2016–2018), this number increased to 24–38 articles per year, and during the development stage (2019–2021) and in-depth development stage (2022–2024), publication count increased to 49–112 annually, with the latter phase alone accounting for 48.2% of the total papers across all four stages. Analysis of collaboration networks revealed that China and the United States were the leading contributors, representing 76.0% and 13.0% of total publications, respectively. Chinese institutions dominate the research landscape, accounting for 85% of the top 20 organizations globally in terms of FGD gypsum. FGD gypsum applications prioritize environmental protection, such as soil remediation, and construction, including the use of cement additives. Nevertheless, keyword and thematic evolution analyses reveal a notable recent shift: research focus is expanding from conventional material properties toward environmental remediation, particularly for low-carbon technologies such as mineral carbonation for CO₂ sequestration. Utilization of FGD gypsum remains limited by impurities, market acceptance, transportation costs, policies, and technological constraints, and future research should prioritize overcoming these technological challenges. On the basis of an extensive review and quantitative analysis, this study synthesizes global research outcomes on FGD gypsum. As the first comprehensive bibliometric review dedicated specifically to FGD gypsum, this study not only maps the knowledge landscape but also provides actionable insights for the transformation of waste into a resource. This study offers strategic references for researchers, policymakers, and industry stakeholders to advance sustainable management and high-value utilization of FGD gypsum.