Influence of supercritical water treatment on heavy metals in medical waste incinerator fly ash
文献类型：期刊论文
| 作者 | Bo, Da ; Zhang, Fu-Shen ; Zhao, Lijuan |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2009-10-15 |
| 卷号 | 170期号:1页码:66-71 |
| 关键词 | Supercritical oxidation Hazardous elements Sequential extraction Leachabililty Waste ash |
| 中文摘要 | In this work, medical waste (MW) incinerator fly ashes from different types of incinerators were subjected to supercritical water (SCW) and SCW + H(2)O(2) (SCWH) treatments. Sequential extraction experiments showed that, after SCW treatment, heavy metals in exchangeable and carbonate forms in the ashes could be transferred into other relatively stable forms, e.g.. Ba and Cr into residual fraction,Cu and Pb into organic matter fraction. SCWH treatment could stabilize heavy metals in Fe-Mn oxides and residual fractions. However, the behavior of As was quite different from heavy metals, which could be leached out from residue fraction after SCVV and SWCH treatments. The leached As tended to absorb onto Fe-Mn oxides and organic matters under near neutral environment, but it could react with Ca(2+) at lower pH, increasing the mobility of this element. Therefore, it is necessary to neutralize acidic ash to near neutral condition before subjecting it to SCVV and SCWH treatments so as to effectively stabilize hazardous elements in the ash. Consequently, it is believed that SCWH treatment is an effective alternative for hazardous elements detoxification in MW fly ash. (C) 2009 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000269162000010 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21591]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Bo, Da,Zhang, Fu-Shen,Zhao, Lijuan. Influence of supercritical water treatment on heavy metals in medical waste incinerator fly ash[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,170(1):66-71. |
| APA | Bo, Da,Zhang, Fu-Shen,&Zhao, Lijuan.(2009).Influence of supercritical water treatment on heavy metals in medical waste incinerator fly ash.JOURNAL OF HAZARDOUS MATERIALS,170(1),66-71. |
| MLA | Bo, Da,et al."Influence of supercritical water treatment on heavy metals in medical waste incinerator fly ash".JOURNAL OF HAZARDOUS MATERIALS 170.1(2009):66-71. |
入库方式： OAI收割
来源：生态环境研究中心
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