Iron-based biochar materials for phosphorus recovery from agricultural runoff: Mechanism and potential application as a slow-release fertilizer
文献类型： 外文期刊
作者： Hui, Kai 1 ; He, Rui 1 ; Tian, Qianqian 1 ; Zhou, Xiaokai 3 ; Hou, Lu 4 ; Zhang, Xu 1 ; Jiang, Yu 6 ; Yao, Hong 1 ;
作者机构： 1.Beijing Jiaotong Univ, Sch Environm, Beijing 100044, Peoples R China
2.Intelligent Environm Res Ctr, 1 Guanzhuang, Beijing 100080, Peoples R China
3.Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China
4.China Testing & Certificat Int Grp Co Ltd, Beijing 100024, Peoples R China
5.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China
6.Heilongjiang Acad Agr Sci, Hort Branch, Harbin 150069, Peoples R China
关键词： Phosphorus recovery; Amorphous FeOOH; Biochar; Adsorption sites; Bioavailability
期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：8.6； 五年影响因子：7.8 ）
ISSN： 1383-5866
年卷期： 2024 年 347 卷
页码：
收录情况： SCI
摘要： Agricultural runoff is an important pathway leading to the loss of phosphorus (P) resources. In this study, three amorphous FeOOH biochar (AF-BC) composites with good P adsorption properties were prepared. Batch experiments showed that both the Elovich model and the Langmuir -Friedrich model were effective in describing the P adsorption by AF-BC, suggesting that the P adsorption by these three materials is a multi-mechanism adsorption process dominated by chemical process. Among them, S -AF exhibited the best adsorption performance with an expected maximum adsorption capacity of 276.40 mg/g. This superior performance can be attributed to S -AF having a larger surface area and a higher concentration of basic groups. Plant culture tests have shown this composite to be effective in promoting seed germination and growth, so it can be used to sequester P lost from agricultural runoff and as a slow-release P fertilizer to improve the soil.
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