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| Research Progress on Preparation and Application of Lignin-based Soil Conditioner |
| Received:August 10, 2025 Revised:October 15, 2025 |
| DOI：10.11981/j.issn.1000-6842.2026.02.12 |
| Key Words:lignin modifications;soil conditioners;soil improvement and remediation;mechanisms |
| Fund Project:福建省高校产学研合作项目（2023H6020）；莆田学院研究生科研创新项目（yjs2024004）。 |
| Author Name | Affiliation | Postcode | | CHEN Jun* | 1College of Environmental and Biological Engineering， Putian University， Putian， Fujian Province， 351100 | 351100 | | LIN Mingkai | 1College of Environmental and Biological Engineering， Putian University， Putian， Fujian Province， 351100 | 351100 | | WANG Chunhua | 1College of Environmental and Biological Engineering， Putian University， Putian， Fujian Province， 351100
2Fujian Provincial Key Lab of Ecological Impacts and Treatment Technologies for Emerging Contaminants， Putian， Fujian Province， 351100
3Key Lab of Ecological Environment and Information Atlas， Putian， Fujian Province， 351100 | 351100 | | LIN Changmei* | 1College of Environmental and Biological Engineering， Putian University， Putian， Fujian Province， 351100
2Fujian Provincial Key Lab of Ecological Impacts and Treatment Technologies for Emerging Contaminants， Putian， Fujian Province， 351100
3Key Lab of Ecological Environment and Information Atlas， Putian， Fujian Province， 351100 | 351100 | | LIU Minghua* | 1College of Environmental and Biological Engineering， Putian University， Putian， Fujian Province， 351100
4College of Environment and Safety Engineering， Fuzhou University， Fuzhou， Fujian Province， 350108 | 350108 |
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| Abstract: |
| This paper summarized the sources and characteristics of lignin， as well as methods for its sulfation， amination， and oxidation modifications. The preparation methods for lignin-based soil conditioners were introduced， and their roles and effects in soil improvement and remediation through mechanisms such as chemical precipitation， ion exchange， adsorption， humic acid conversion， and controlled release were elaborated. Finally， it reviewed the application of lignin as a soil conditioner in the remediation of acidic， saline-alkali， and heavy metal-contaminated soils， and looked forward to the challenges and research emphasis for its future development. |
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