Abstract
Biochar remediation technology is increasingly being valued due to its economic and environmental advantages in treating heavy metal contaminated soil. In order to comprehensively grasp the research progress in this field, we analyzed the current research status, hotspots, and development directions of biochar passivation remediation of heavy metal contaminated soil based on the core collection database of Web of Science from 2008 to 2022, using bibliometrics and CiteSpace visualization technology. The analysis results indicate that since 2014, research on biochar remediation technology has become a hot topic in the treatment of heavy metal contaminated soil, and the number of literature in this field has grown rapidly. The application scope, mechanism of action, application effect, preparation method, and optimization technology of biochar are the main focus of this field. The selection of iron-modified biochar in the rice-soil system, biochar-based nanocomposites, and the combined application of phytoremediation and biochar are current research hotspots. The interaction mechanism between biochar and soil system, microbial remediation technology based on biochar, potential long-term effects of biochar use, and separation technology between biochar and soil are future research directions in the field of biochar remediation of heavy metal contaminated soil.
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The data that support the findings of this study are available from the corresponding author, X. L., upon reasonable request.
References
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This work was supported by the National Natural Science Foundation of China (42277487) and the Research and Development Key Project of Shaanxi Province, China (2020SF-433).
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SD: Data curation, software, writing-original draft, formal analysis, Validation. XL: Conceptualization, methodology, writing-review and editing, funding acquisition, supervision. XC: Methodology, Writing-review and editing. KL: Formal analysis, visualization, writing-review and editing. TZ: Software, formal analysis, validation. YZ: Software, formal analysis, validation. BY: Data curation, software, formal analysis.
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Deng, S., Lu, X., Chen, X. et al. Research on biochar remediation of heavy metal contaminated soil based on CiteSpace visual analysis. Clean Techn Environ Policy (2024). https://doi.org/10.1007/s10098-024-02767-5
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DOI: https://doi.org/10.1007/s10098-024-02767-5