Immobilization and recycling of contaminated marine sediments in cement-based materials incorporating iron-biochar composites
文献类型：期刊论文
| 作者 | Wang, Qiming; Li, Jiang-shan; Xue, Qiang ; Poon, Chi Sun
|
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2022-08-05 |
| 卷号 | 435 |
| 关键词 | Dredged marine sediment Iron-biochar composite Incinerated sewage sludge ash pH-dependent leaching Stabilization solidification |
| ISSN号 | 0304-3894 |
| 英文摘要 | Sustainable stabilization/solidification (S/S) incorporating biochar for hazardous wastes has attracted increasing attention. In this study, contaminated marine sediments were remediated and recycled as useful materials via cement-based S/S process incorporating iron-biochar composites derived from incinerated sewage sludge ash (ISSA) and peanut shell. Results showed that incorporation of 20% iron-biochar composites notably increased the Cr immobilization (52.8% vs 92.1-99.7%), while attained similar As (70%) and Cu (95%) immobilization efficiencies compared to the control group (CK) prepared with plain cement as the binder based on the Toxicity Characteristic Leaching Procedure. S/S products with the addition of ISSA derived iron-biochar composite had a mechanical strength of 5.0 MPa, which was significantly higher than its counterparts derived from pure iron oxide or pristine biochar (< 4.5 MPa). Microstructural and spectroscopic characterizations and chemical leaching experiments demonstrated that reduction of Cr(VI) to Cr(III) followed by formation of Cr-Fe precipitates by zero valent iron in iron-biochar composites contributed to the enhanced immobilization efficacy of Cr(VI) compared |
| 学科主题 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000799059000001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34975]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Hong Kong Polytechnic University; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Wang, Qiming,Li, Jiang-shan,Xue, Qiang,et al. Immobilization and recycling of contaminated marine sediments in cement-based materials incorporating iron-biochar composites[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,435. |
| APA | Wang, Qiming,Li, Jiang-shan,Xue, Qiang,&Poon, Chi Sun.(2022).Immobilization and recycling of contaminated marine sediments in cement-based materials incorporating iron-biochar composites.JOURNAL OF HAZARDOUS MATERIALS,435. |
| MLA | Wang, Qiming,et al."Immobilization and recycling of contaminated marine sediments in cement-based materials incorporating iron-biochar composites".JOURNAL OF HAZARDOUS MATERIALS 435(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。