The effect of sulfur on the leaching of Cr3+, Cr6+, Pb2+ and Zn2+ from fly ash glass
文献类型：期刊论文
| 作者 | Song, Wenfeng1,2; Zhu, Zewen4; Cao, Jianwei1,2,3; Wang, Zhi1,2,3; Chang, Yali1,2,6; Wang, Ziming1,2,5 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 305页码:8 |
| ISSN号 | 0045-6535 |
| 关键词 | Solidification stability Non-metal S Heavy metal Long-term leaching Hazardous ion detoxification |
| DOI | 10.1016/j.chemosphere.2022.135387 |
| 英文摘要 | This work assessed the capture and subsequent release of potentially harmful Cr(VI), Cr(III), Pb(II) and Zn(II) ions in and from dechlorinated fly ash glass. Differential scanning calorimetry, Fourier transform infrared spectroscopy, scanning electron microscopy - energy dispersive spectroscopy and inductively coupled plasma spectrometry along with other analytical techniques were used to explore the mechanism by which sulfur affected the immobilization and long-term leaching behavior of heavy metals in fly ash glass. Working with a CaO-MgO-Al2O3-SiO2-SO3 system, increasing the sulfur content was found to promote the leaching of Cr but had only a minimal effect on the loss of Pb and Zn. The concentrations of Pb and Zn in the leachate were found to remain at essentially nil over time while the Cr level increased up to 64 h and then decreased. The presence of Sulfur ions degraded the glass network and this promoted the leaching of S2-, Cr3+/Cr6+, Pb(2+ )and Zn2+. In addition, the S2- ions reacted with Pb2+ and Zn2+ to form needle-shaped and flocculent sulfide precipitates, thus trapping the Pb2+ and Zn2+. Si4+, Ca2+, Al3+ and Fe3+ were also found to migrate into the leaching solution where they combined to form a dendritic flocculent that adsorbed and encapsulated Cr. This phenomenon greatly reduced the concentration of Cr in the leachate. Thus, sulfur prevented the leaching of Cr, Pb and Zn via different mechanisms. |
| WOS关键词 | ORE PROCESSING RESIDUE ; HEAVY-METALS ; THERMAL-TREATMENT ; BEHAVIOR ; IMMOBILIZATION ; SLUDGE ; VITRIFICATION ; POLLUTION ; CHROMIUM ; GROWTH |
| 资助项目 | National Natural Science Foundations of China[52070181] ; National Natural Science Foundations of China[51934006] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000884773400005 |
| 资助机构 | National Natural Science Foundations of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55890]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Cao, Jianwei; Wang, Zhi |
| 作者单位 | 1.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China 5.Univ Sci & Technol China, Sch Rare Earths, Hefei 341000, Peoples R China 6.China Univ Min & Technol, Sch Mech Elect & Informat Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Wenfeng,Zhu, Zewen,Cao, Jianwei,et al. The effect of sulfur on the leaching of Cr3+, Cr6+, Pb2+ and Zn2+ from fly ash glass[J]. CHEMOSPHERE,2022,305:8. |
| APA | Song, Wenfeng,Zhu, Zewen,Cao, Jianwei,Wang, Zhi,Chang, Yali,&Wang, Ziming.(2022).The effect of sulfur on the leaching of Cr3+, Cr6+, Pb2+ and Zn2+ from fly ash glass.CHEMOSPHERE,305,8. |
| MLA | Song, Wenfeng,et al."The effect of sulfur on the leaching of Cr3+, Cr6+, Pb2+ and Zn2+ from fly ash glass".CHEMOSPHERE 305(2022):8. |
入库方式： OAI收割
来源：过程工程研究所
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