Degradation of brominated epoxy resin and metal recovery from waste printed circuit boards through batch sub/supercritical water treatments
文献类型：期刊论文
| 作者 | Xing, Mingfei ; Zhang, Fu-Shen |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2013 |
| 卷号 | 219期号:1页码:131-136 |
| 通讯作者 | Zhang, FS |
| 中文摘要 | Waste printed circuit boards (WPCBs) contain high amount of brominated flame retardants and heavy metals which may bring a series of environmental and health problems. In the present study, an effective and benign process using sub- and supercritical water (sub/SCW) to simultaneously degrade brominated epoxy resin and recover metals from WPCBs was developed. Experiments were performed in a batch-type reactor with temperatures ranging from 200 to 400 degrees C, water adding amounts from 10 to 40 ml and holding times from 30 to 240 min. The results showed that brominated epoxy resins (BERs) could be quickly and efficiently decomposed under sub/SCW condition. The debromination rate was 97.8% by controlling the temperature, water adding amount and holding time at 400 degrees C, 40 ml and 120 min, respectively. Most of the bromine was changed into HBr and around 97.7% was enriched in water. Meanwhile, bromine-free oil was obtained of which the main compositions were phenol (58.5%) and 4-(1-methylethyl)-phenol (21.7%). After the sub/SCW treatments, the glass fibers and copper foils in the residue can be easily liberated and recovered respectively. The copper recovery rate reached 98.11% in the purities of 96.74% (grain size >2.0 mm) and 92.74% (0.147-2.0 mm). This study provides an efficient and green approach for WPCBs recycling. (C) 2013 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000317159300016 |
| 公开日期 | 2014-06-05 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7344]  |
| 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 | Xing, Mingfei,Zhang, Fu-Shen. Degradation of brominated epoxy resin and metal recovery from waste printed circuit boards through batch sub/supercritical water treatments[J]. CHEMICAL ENGINEERING JOURNAL,2013,219(1):131-136. |
| APA | Xing, Mingfei,&Zhang, Fu-Shen.(2013).Degradation of brominated epoxy resin and metal recovery from waste printed circuit boards through batch sub/supercritical water treatments.CHEMICAL ENGINEERING JOURNAL,219(1),131-136. |
| MLA | Xing, Mingfei,et al."Degradation of brominated epoxy resin and metal recovery from waste printed circuit boards through batch sub/supercritical water treatments".CHEMICAL ENGINEERING JOURNAL 219.1(2013):131-136. |
入库方式： OAI收割
来源：生态环境研究中心
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