A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties
文献类型：期刊论文
| 作者 | Shi, Peiyang1,2; Liu, Yuzhe1,2,3; Chao, Qingyang1,2; Jiang, Maofa1,2 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2024-01-20 |
| 卷号 | 681页码:14 |
| 关键词 | Ascharite tailings Mechanochemical activation Siliceous porous adsorbents Surface silanol Inner structural change Methylene blue adsorption mechanism |
| ISSN号 | 0927-7757 |
| DOI | 10.1016/j.colsurfa.2023.132787 |
| 通讯作者 | Liu, Yuzhe(liuyuzhe941209@163.com) |
| 英文摘要 | Ascharite tailings are discarded by the boron industry due to their low boron content and high magnesium content. Additionally, the large-scale storage of these tailings contributes to resource wastage and environmental pollution. The present study successfully prepared a siliceous adsorbent through the combined use of mechanical and acid activation methods. The tailings underwent acid treatment under mild conditions, leading to the dissolution of magnesium while maintaining the integrity of the silicate framework. This process resulted in the formation of a mesoporous structure primarily composed of slit-shaped pores. The specific surface area reached 234.7 m2 g-1, while the pore volume reached 0.31 cm3 g-1. The maximum adsorption capacity for methylene blue was 0.66 mg m- 2 per unit of surface area. The pollutants displayed a flat orientation at equilibrium, with a maximum tilt angle of approximately 53 degrees. The adsorption rate was limited due to the decrease in available adsorption sites. However, mechanical activation increased the density of active silanol sites from 2.76 to 4.34 mg m- 2, significantly weakening the shielding effect on other potential sites. Thus, tailings resources can be effectively converted into valuable adsorbent materials using a convenient and controllable hydrometallurgical process. |
| 资助项目 | Liaoning Provincial Natural Science Foun-dation of China[52074078] ; Fundamental Research Funds for the Central Universities[2019-MS-127] ; [N2025035] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001126205600001 |
| 出版者 | ELSEVIER |
| 资助机构 | Liaoning Provincial Natural Science Foun-dation of China ; Fundamental Research Funds for the Central Universities |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Yuzhe |
| 作者单位 | 1.Northeastern Univ, Key Lab Ecol Met Multimet Mineral, Minist Educ, Shenyang 110819, Peoples R China 2.Northeastern Univ, Sch Met, Shenyang 11081, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Peiyang,Liu, Yuzhe,Chao, Qingyang,et al. A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2024,681:14. |
| APA | Shi, Peiyang,Liu, Yuzhe,Chao, Qingyang,&Jiang, Maofa.(2024).A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,681,14. |
| MLA | Shi, Peiyang,et al."A convenient and user-friendly hydrometallurgical process for preparing porous siliceous adsorbents using ascharite tailings: Mechanism of structural change and evaluation of adsorption properties".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 681(2024):14. |
入库方式： OAI收割
来源：金属研究所
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