Adsorption of phosphorus by calcium-flour biochar: Isotherm, kinetic and transformation studies
文献类型：期刊论文
| 作者 | Wang, SD; Kong, LJ; Long, JY; Su, MH; Diao, ZH; Chang, XY; Chen, DY; Song, G; Shih, KM |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2018 |
| 卷号 | 195页码:666-672 |
| 通讯作者 | kongl_jun@163.com ; kshih@hku.hk |
| 英文摘要 | Discharging phosphorus (P)-contaminated water directly into the aquatic environment leads to resource loss and eutrophication. Thus, removing P from waste streams is imperative. In this study, calcium decorated biochar (Ca-BC) in different mass ratios of Ca to BC was designed to effectively adsorb P from solution. Ca-BC was characterized through X-ray diffraction (XRD) analysis, followed by isotherm and kinetic adsorption experiments. The decorated Ca on the BC surface was found to have preferred P adsorption ability. A design of calcium hydroxide (Ca(OH)(2)) to flour in a mass ratio of 2:1 was found to have a maximum adsorption capacity of 314.22 mg g(-1) for P. The Langmuir and pseudo-second-order models fit the sorption process adequately. XRD analysis indicated that the preferable adsorption ability to P was due to the reaction of Ca(OH)(2) and PO34-, forming the hydroxylapatite (Ca-5(PO4)(3)(OH)) crystal. The P in solution was transformed to the crystal. Thus, Ca-BC is an environmental friendly and low-cost sorbent for P removal. (C) 2017 Elsevier Ltd. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| 关键词[WOS] | Phosphorus ; HydroxyLapatite ; Calcium hydroxide ; Ca-BC ; Adsorption |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/16996]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, SD,Kong, LJ,Long, JY,et al. Adsorption of phosphorus by calcium-flour biochar: Isotherm, kinetic and transformation studies[J]. CHEMOSPHERE,2018,195:666-672. |
| APA | Wang, SD.,Kong, LJ.,Long, JY.,Su, MH.,Diao, ZH.,...&Shih, KM.(2018).Adsorption of phosphorus by calcium-flour biochar: Isotherm, kinetic and transformation studies.CHEMOSPHERE,195,666-672. |
| MLA | Wang, SD,et al."Adsorption of phosphorus by calcium-flour biochar: Isotherm, kinetic and transformation studies".CHEMOSPHERE 195(2018):666-672. |
入库方式： OAI收割
来源：南海海洋研究所
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