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DOI | 10.1016/j.jhazmat.2014.02.035 |
Characterization of salt cake from secondary aluminum production | |
Huang, Xiao-Lan1; El Badawy, Amro1; Arambewela, Mahendranath1; Ford, Robert2; Barlaz, Morton3; Tolaymat, Thabet2 | |
发表日期 | 2014-05-30 |
ISSN | 0304-3894 |
卷号 | 273页码:192-199 |
英文摘要 | Salt cake is a major waste component generated from the recycling of secondary aluminum processing (SAP) waste. Worldwide, the aluminum industry produces nearly 5 million tons of waste annually and the end-of-life management of these wastes is becoming a challenge in the U.S. and elsewhere. In this study, the mineral phases, metal content and metal leachability of 39 SAP waste salt cake samples collected from 10 different facilities across the U.S. were determined. The results showed that aluminum (Al), aluminum oxide, aluminum nitride and its oxides, spinel and elpasolite are the dominant aluminum mineral phases in salt cake. The average total Al content was 14% (w/w). The overall percentage of the total leachable Al in salt cake was 0.6% with approximately 80% of the samples leaching at a level less than 1% of the total aluminum content. The extracted trace metal concentrations in deionized water were relatively low (mu g L-1 level). The toxicity characteristic leaching procedure (TCLP) was employed to further evaluate leachability and the results indicated that the leached concentrations of toxic metals from salt cake were much lower than the EPA toxicity limit set by USEPA. Published by Elsevier B.V. |
英文关键词 | Aluminum;Mineral phase;Leachability;Salt cake;Secondary aluminum production (SAP);Toxicity characteristic leaching procedure (TCLP) |
语种 | 英语 |
WOS记录号 | WOS:000336821400024 |
来源期刊 | JOURNAL OF HAZARDOUS MATERIALS
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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/58888 |
作者单位 | 1.Pegasus Tech Serv Inc, Cincinnati, OH 45219 USA; 2.US EPA, Off Res & Dev, Cincinnati, OH 45224 USA; 3.N Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC 27695 USA |
推荐引用方式 GB/T 7714 | Huang, Xiao-Lan,El Badawy, Amro,Arambewela, Mahendranath,et al. Characterization of salt cake from secondary aluminum production[J]. 美国环保署,2014,273:192-199. |
APA | Huang, Xiao-Lan,El Badawy, Amro,Arambewela, Mahendranath,Ford, Robert,Barlaz, Morton,&Tolaymat, Thabet.(2014).Characterization of salt cake from secondary aluminum production.JOURNAL OF HAZARDOUS MATERIALS,273,192-199. |
MLA | Huang, Xiao-Lan,et al."Characterization of salt cake from secondary aluminum production".JOURNAL OF HAZARDOUS MATERIALS 273(2014):192-199. |
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