Porous biochar-nanoscale zero-valent iron composites: Synthesis, characterization and application for lead ion removal
文献类型：期刊论文
| 作者 | Li, Shuaishuai1,3; Yang, Fan4; Li, Jiangshan2; Cheng, Kui1,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 746页码:9 |
| 关键词 | nZVI Hydrophilic porous biochar Dispersibility Lead ions Removal mechanism |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.141037 |
| 英文摘要 | Nano-zero-valent iron has been used in combination with a variety of support carriers to remove heavy metals in solution. However, pre-treatment of the carrier can reflect a better synergistic effect and thus achieve high heavy metal removal capabilities. In this study, the hydrophilic biochar obtained by an acid ammonium persulfate oxidation has an adsorption capacity of up to 135.4 mg g(-1) for Pb2+ (25 degrees C, pH = 6 with adsorbent amount of 10 mg and Pb2+ concentration of 50 mg L-1). Due to the strong Fe-C-O covalent bond, nZVI increases the binding force with the carbon matrix. Benefitting from the high specific surface area, porous structure and rich oxygen-containing functional groups, the resultant nZVI-HPB samples are favourable for Pb2+ diffusion and adsorption, exhibiting maximum adsorption capacity of 480.9 mg g(-1) (pH = 6, 25 degrees C with adsorbent amount of 10 mg and Pb2+ concentration of 200 mg L-1). The multiple interaction mechanisms in the Pb2+ removal process such as the reduction reaction, complexation and co-precipitation proceed simultaneously are concluded by the analyses of Fourier-Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) spectra. (C) 2020 Published by Elsevier B.V. |
| 资助项目 | Longjiang Scholars for young scientist, University Nursing Program for Young Scholar with Creative Talents in Heilongjiang Province[UNPYSCT2017018] ; Outstanding Youth Foundation of Heilongjiang Province of China[YQ2019E013] ; National Key Research and Development Program[2019YFC1804002] ; Natural Science Foundation of Heilongjiang Province of China[QC2018019] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000579371300032 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/24964]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yang, Fan; Cheng, Kui |
| 作者单位 | 1.Northeast Agr Univ, Coll Engn, Harbin 150030, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China 4.Northeast Agr Univ, Coll Water Conservancy & Civil Engn, Harbin 150030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shuaishuai,Yang, Fan,Li, Jiangshan,et al. Porous biochar-nanoscale zero-valent iron composites: Synthesis, characterization and application for lead ion removal[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,746:9. |
| APA | Li, Shuaishuai,Yang, Fan,Li, Jiangshan,&Cheng, Kui.(2020).Porous biochar-nanoscale zero-valent iron composites: Synthesis, characterization and application for lead ion removal.SCIENCE OF THE TOTAL ENVIRONMENT,746,9. |
| MLA | Li, Shuaishuai,et al."Porous biochar-nanoscale zero-valent iron composites: Synthesis, characterization and application for lead ion removal".SCIENCE OF THE TOTAL ENVIRONMENT 746(2020):9. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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