Enhancing phosphorus availability in phosphorus-fertilized zones by reducing phosphate adsorbed on ferrihydrite using rice straw-derived biochar
文献类型：期刊论文
| 作者 | Cui, Hao-Jie1,2; Wang, Ming Kuang3; Fu, Ming-Lai1; Ci, En4 |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 11期号:7页码:1135-1141 |
| 关键词 | Adsorb Biochar Fe-oxide Ferrihydrite Phosphate |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-011-0405-9 |
| 通讯作者 | Fu, Ming-Lai(mlfu@iue.ac.cn) |
| 英文摘要 | Biochar amendments can alter phosphorus (P) availability in soils, though the influencing mechanisms are not yet fully understood. This work investigated the adsorption and desorption of P on ferrihydrite (F, a Fe-oxide widely distributed in surface environments) in order to evaluate the interactions between P and Fe-oxide in the absence or presence of biochar (F or ferrihydrite-biochar (F-B) interaction) in soils. Biochar was produced by pyrolysis of rice straw at 600A degrees C in steel ring furnaces. Two-line ferrihydrite was synthesized by dropwise addition of 1 mol L-1 KOH into Fe(NO3)(3) solution until the pH reached 7-8 while stirring vigorously. An F-B complex was prepared under similar conditions, except that a mixture of 10 g biochar and the Fe(NO3)(3) solution was used as the starting material instead of Fe(NO3)(3) alone. A batch equilibration method was used to determine sorption or desorption of P. The mechanisms of P adsorption on F and F-B complex materials were discussed. Adsorption of P on F decreased as the pH was increased from 3.0 to 10, but the adsorption capacity of F decreased by about 30-40% in the presence of biochar. The P chemisorption rates on F also decreased in the presence of biochar. The Freundlich model showed that the active adsorption sites on the surface of the F-B complex were energetically heterogeneous. The desorbability of adsorbed P on F was enhanced by combination with biochar. The mechanisms of P adsorption on F and F-B complex materials are different. The results showed that the amount and rate of P adsorption on the surface of ferrihydrite decreased with the presence of biochar, and the desorbability of adsorbed P on ferrihydrite can be enhanced when combined with biochar. Thus, the presence of biochar can decrease P adsorption on the Fe-oxides and enhance P availability in soils. |
| 收录类别 | SCI |
| WOS关键词 | TEMPERATE SOILS ; ORGANIC-ACIDS ; IRON-OXIDE ; ADSORPTION ; GOETHITE ; MECHANISMS ; WATER |
| WOS研究方向 | Geology ; Agriculture |
| WOS类目 | Geosciences, Multidisciplinary ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000294837900002 |
| 出版者 | SPRINGER HEIDELBERG |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559009 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Fu, Ming-Lai |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Urban Environm & Hlth, Inst Urban Environm, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 3.Natl Taiwan Univ, Dept Agr Chem, Taipei 106, Taiwan 4.Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Hao-Jie,Wang, Ming Kuang,Fu, Ming-Lai,et al. Enhancing phosphorus availability in phosphorus-fertilized zones by reducing phosphate adsorbed on ferrihydrite using rice straw-derived biochar[J]. JOURNAL OF SOILS AND SEDIMENTS,2011,11(7):1135-1141. |
| APA | Cui, Hao-Jie,Wang, Ming Kuang,Fu, Ming-Lai,&Ci, En.(2011).Enhancing phosphorus availability in phosphorus-fertilized zones by reducing phosphate adsorbed on ferrihydrite using rice straw-derived biochar.JOURNAL OF SOILS AND SEDIMENTS,11(7),1135-1141. |
| MLA | Cui, Hao-Jie,et al."Enhancing phosphorus availability in phosphorus-fertilized zones by reducing phosphate adsorbed on ferrihydrite using rice straw-derived biochar".JOURNAL OF SOILS AND SEDIMENTS 11.7(2011):1135-1141. |
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来源：南京土壤研究所
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