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DOI | 10.1016/j.chemosphere.2015.03.033 |
Mineral phases and metals in baghouse dust from secondary aluminum production | |
Huang, Xiao-Lan1; El Badawy, Amro M.1; Arambewela, Mahendranath1; Adkins, Renata1; Tolaymat, Thabet2 | |
发表日期 | 2015-09-01 |
ISSN | 0045-6535 |
卷号 | 134页码:25-30 |
英文摘要 | Baghouse dust (BHD) is a solid waste generated by air pollution control systems during secondary aluminum processing (SAP). Management and disposal of BHD can be challenging in the U.S. and elsewhere. In this study, the mineral phases, metal content and metal leachability of 78 BHD samples collected from 13 different SAP facilities across the U.S. were investigated. The XRD semi-quantitative analysis of BHD samples suggests the presence of metallic aluminum, aluminum oxide, aluminum nitride and its oxides, spinel, elpasolite as well as diaspora. BHD also contains halite, sylvite and fluorite, which are used as fluxes in SAP activities. Total aluminum (Al) in the BHD samples averaged 18% by weight. Elevated concentrations of trace metals (>100 mu L-1 As; >1000 mu g L-1 Cu, Mn, Se, Pb, Mn and Zn) were also detected in the leachate. The U.S. toxicity characteristic leaching procedure (TCLP) results showed that some samples leached above the toxicity limit for Cd, Pb and Se. Exceeding the TCLP limits in all sample is independent of facilities generating the BHD. From the metal content perspective only, it appears that BHD has a higher potential to exhibit toxicity characteristics than salt cake (the largest waste stream generated by SAP facilities). Published by Elsevier Ltd. |
英文关键词 | Aluminum;Baghouse dust (BHD);Landfill;Secondary aluminum production (SAP);Toxicity characteristic leaching procedure (TCLP) |
语种 | 英语 |
WOS记录号 | WOS:000356549500004 |
来源期刊 | CHEMOSPHERE |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/57051 |
作者单位 | 1.Pegasus Tech Serv Inc, Cincinnati, OH 45219 USA; 2.US EPA, Off Res & Dev, Cincinnati, OH 45224 USA |
推荐引用方式 GB/T 7714 | Huang, Xiao-Lan,El Badawy, Amro M.,Arambewela, Mahendranath,et al. Mineral phases and metals in baghouse dust from secondary aluminum production[J]. 美国环保署,2015,134:25-30. |
APA | Huang, Xiao-Lan,El Badawy, Amro M.,Arambewela, Mahendranath,Adkins, Renata,&Tolaymat, Thabet.(2015).Mineral phases and metals in baghouse dust from secondary aluminum production.CHEMOSPHERE,134,25-30. |
MLA | Huang, Xiao-Lan,et al."Mineral phases and metals in baghouse dust from secondary aluminum production".CHEMOSPHERE 134(2015):25-30. |
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