A novel dry cleaning system for contaminated waste plastic purification in gas-solid media
文献类型：期刊论文
| 作者 | Xia, Dong; Zhang, Fu-Shen |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2018-01-10 |
| 卷号 | 171页码:1472-1480 |
| ISSN号 | 0959-6526 |
| 关键词 | Dry cleaning Waste plastics Agitated fluidized bed Gas-solid media |
| 文献子类 | Article |
| 英文摘要 | Dry cleaning of waste plastic is urgently required to substitute traditional wet cleaning, especially in arid areas. Nevertheless, it is still limited by relatively poor cleaning performance. This study reports a novel, effective and sustainable dry cleaning system for waste plastic purification in gas-solid media. An agitated fluidized bed and Geldart B silica sand were employed to fulfill the dry cleaning process without any consumption of water. With gravimetric and spectroscopic methods determining cleaning performance index, superficial gas velocity, bed height, temperature, agitation speed and cleaning time were investigated to evaluate their influence on dry cleaning performance. Under the moderate operating conditions, the gravimetric and spectroscopic indexes of the dry cleaning reached up to 98.4% and 95.0%, which were close to those of routine caustic washing (99.2% and 98.9%). Furthermore, the dry cleaning turned in a similar performance by visual inspection, as well as a similar surface transition of more hydrophilicity compared with caustic washing. Mechanism analysis indicated that mutual interaction between fluidization and agitation facilitated adhesion breaking and dispersing of contaminants into gas-solid media due to sufficient collisions and mass transfer. Triboelectrification that resulted in redeposition of fine powder should be avoided to further improve dry cleaning performance. This study provides theoretical and practical guidance for dry cleaning of contaminated waste plastics. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40844]  |
| 专题 | 生态环境研究中心_固体废弃物处理与资源化实验室 |
| 推荐引用方式 GB/T 7714 | Xia, Dong,Zhang, Fu-Shen. A novel dry cleaning system for contaminated waste plastic purification in gas-solid media[J]. JOURNAL OF CLEANER PRODUCTION,2018,171:1472-1480. |
| APA | Xia, Dong,&Zhang, Fu-Shen.(2018).A novel dry cleaning system for contaminated waste plastic purification in gas-solid media.JOURNAL OF CLEANER PRODUCTION,171,1472-1480. |
| MLA | Xia, Dong,et al."A novel dry cleaning system for contaminated waste plastic purification in gas-solid media".JOURNAL OF CLEANER PRODUCTION 171(2018):1472-1480. |
入库方式： OAI收割
来源：生态环境研究中心
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