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| Research progress of metal-modified biochar for phosphate adsorption |
| Received:August 03, 2018 Revised:September 25, 2018 |
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| KeyWord:biochar;metal modification;phosphorus;pollution prevention;adsorption |
| Author Name | Affiliation | E-mail | | LIU Xiao-ning | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | JIA Bo-yu | College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China | | | SHEN Feng | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | | | QI Xin-hua | Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China | qixinhua@nankai.edu.cn |
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| Abstract: |
| High phosphorus content is the main cause of agricultural non-point source pollution and eutrophication. Therefore, scientifically and rationally controlling the phosphate concentration in rivers, lakes, and agricultural runoff is of great significance to their prevention and control. Among the many phosphate retention methods, biochar adsorption has received extensive attention in related fields. However, unmodified biochar has poor adsorption efficiency for phosphates, and metal-element modification can significantly improve the phosphate adsorption performance of the materials. This review introduces the main preparation methods and research ideas of different metal element (i.e., magnesium, calcium, iron, strontium, and bimetal)modified biochars, applied in the field of phosphate adsorption. It summaries the main influences of these materials in the phosphate adsorption process. It aims to provide scientific bases and theoretical support for the prevention and control of agricultural non-point source pollution and water eutrophication. |
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