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Research Progress on the Preparation and Application of Biochar-based Composite Hydrogels
Received:December 19, 2023  
DOI：10.11980/j.issn.0254-508X.2024.05.004
Key Words:biochar  composite hydrogel  environmental restoration  adsorption towards heavy metals  sewage treatment
Fund Project:国家烟草专卖局重大专项（110202201041（XJ-12））；湖北中烟工业有限责任公司科技项目（2023JSYL4SX1B004，2021JSYL4SX1C008）。
Author NameAffiliationPostcode
DU Fu Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
SHI Youzhi Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
LIU Liping Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
JIAN Rong Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
FAN Wenpeng Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
CAI Yao Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
WANG Jian* Hubei China Tobacco Industry Co.， Ltd.， Wuhan， Hubei Province， 430040 430040
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Abstract:Biochar-based composite hydrogel has excellent physicochemical properties. Thus it has been studied and applied in many fields in recent years. In this paper， the preparation methods of biochar-based composite hydrogels were reviewed， such as physical cross-linking method and chemical cross-linking method. The applications of biochar-based composite hydrogels in removing pollutants in water， soil improvement， increasing crop yield， slow-releasing fertilizer and alleviating plant heavy metal stress were summarized， and the application mechanism and action mechanism were expounded. On this basis， the future research direction of biochar-based composite hydrogels was prospected， the existing problems and potential risks in the application of biochar-based composite hydrogels were analyzed， and the corresponding suggestions were put forward.
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