An integrated approach combines hydrothermal chemical and biological treatment to enhance recycle of rare metals from coal fly ash
文献类型：期刊论文
| 作者 | Su, HaiFeng1,4 ; Tan, Furong2; Lin, JiaFu3
|
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 395页码:13 |
| 关键词 | Coal fly ash Rare metals Acidithiobacillus thiooxidans Hydrothermal chemical treatment Microbial leaching |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2020.124640 |
| 通讯作者 | Lin, JiaFu(linjiafu@cdu.edu.cn) |
| 英文摘要 | Coal fly ash rich in rare metals accounts for a large amount of solid waste released from coal-fired power plants. However, rare metals, the components of coal fly ash with the highest economic value, are not fully recycled due to the lack of an effective, low-cost approach. Therefore, it is urgent to develop a new approach, aiming at increasing the recycling efficient, decreasing the cost and strengthening the high economic value of fly ash. Here, we developed an integrated approach combines hydrothermal chemical treatment process (HTCP) and biological leaching process (BLP) to improve recycle of rare metals from coal fly ash. The results showed that the one-step bioleaching method could obtain more kinds of rare metals and dramatically improve bioleaching rate after hydrothermal-alkali treatment (HAKT) using Acidithiobacillus thiooxidans. After HAKT, the leaching rates of metals V, Sr, Y, La, and Ce were higher than those of the untreated pure fly ash (UPFA) with the maximum values of 51%, 70.52%, 37.48%, 64.77%, and 76.37%, respectively; after hydrothermal-acid treatment (HTAT), the bioleaching rates of rare metals Ni, Sr, and Y, were higher than those of the UPFA with the maximum values of 70.24%, 20.26%, and 34.54% respectively. The results also showed that, for most rare metals, the recovery rate following HAKT was higher than that following HTAT. This result can be demonstrated via analyzing adsorption quantity, adsorption kinetics and diffusion model of fly ashes for A.thiooxidans. Our study provides an important pathway for recycling rare metals from coal fly ash. |
| 资助项目 | earmarked fund for the Open Project Program of the State Key Laboratory of Petroleum Pollution Control[PPC2017004] ; CNPC Research Institute of Safety and Environmental Technology ; National Natural Science Foundation and frontier research program of Chongqing[cstc2017jcyjA02138] ; Chongqing Science Committee ; Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Natural and Resources[SXDJ2019] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000537388500002 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/11187]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Lin, JiaFu |
| 作者单位 | 1.Chengdu Univ, Inst Adv Study, Chengdu, Peoples R China 2.Minist Agr, Biogas Inst, Chengdu 610041, Sichuan, Peoples R China 3.Chengdu Univ, Sichuan Ind Inst Antibiot, Antibiot Res & Reevaluat Key Lab Sichuan Prov, Chengdu, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, 266 Fangzheng Ave,Shuitu High Tech Pk, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, HaiFeng,Tan, Furong,Lin, JiaFu. An integrated approach combines hydrothermal chemical and biological treatment to enhance recycle of rare metals from coal fly ash[J]. CHEMICAL ENGINEERING JOURNAL,2020,395:13. |
| APA | Su, HaiFeng,Tan, Furong,&Lin, JiaFu.(2020).An integrated approach combines hydrothermal chemical and biological treatment to enhance recycle of rare metals from coal fly ash.CHEMICAL ENGINEERING JOURNAL,395,13. |
| MLA | Su, HaiFeng,et al."An integrated approach combines hydrothermal chemical and biological treatment to enhance recycle of rare metals from coal fly ash".CHEMICAL ENGINEERING JOURNAL 395(2020):13. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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