膨润土与花生壳碳回收印刷电路板中重金属的比较研究

IF 1.4 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Journal of Ceramic Processing Research Pub Date : 2020-02-01 DOI:10.36410/jcpr.2020.21.1.75

Murugesan Palanisamy, K. Kandasamy

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引用次数: 6

摘要

每年处理的电子废物的数量正在惊人地增加，由于重金属和其他有毒物质的存在，这是一个重大的环境问题。本研究采用浸出和吸附相结合的方法对印刷电路板中的重金属进行了回收。两阶段王水浸出从PCB中提取铜(Cu)、锡(Sn)、铅(Pb)和锌(Zn)。以膨润土(弯曲)和花生壳碳(PSC)为吸附剂，采用热活化和化学活化的原始形式去除浸出液中的重金属。研究了接触时间、温度、吸附剂用量和浆料等参数对%吸附的影响。化学活化bent (C-A bent)已被证明是一种有效的吸附剂，对Cu的吸附率为97%，Sn的98%，Zn的96%，Pb的96%。浸出与吸附相结合是处理电子垃圾的一种很有前途的方法。

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Comparative studies on bentonite clay and peanut shell carbon recovering heavy metals from printed circuit boards

The quantity of electronic waste subjected to disposal annually is increasing alarmingly and is of major environmental concern due to the existence of heavy metals and other toxic substances. In this present study, by combining leaching and adsorption the recovery of heavy metals from Printed circuit boards (PCBs) has been performed. The two stage aqua-regia leaching extracts Copper (Cu), Tin (Sn), Lead (Pb), and Zinc (Zn) from PCB. Bentonite Clay (Bent) and Peanut Shell Carbon (PSC) in their pristine, thermally and chemically activated forms were employed as adsorbents to remove the heavy metals from leached solution. Effect of parameters (contact time, temperature, adsorbent dosage and size) on % adsorption was studied. Chemically activated bent (C-A Bent) has proven to be an effective among all adsorbents studies with % adsorption for Cu 97%, Sn 98%, Zn 96%, and Pb 96%. Leaching and adsorption combination can become a promising methodology for handing electronic waste.

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来源期刊

Journal of Ceramic Processing Research 工程技术-材料科学：硅酸盐

CiteScore

2.00

自引率

69.20%

发文量

审稿时长

8 months

期刊介绍： The JOURNAL OF CERAMIC PROCESSING RESEARCH aims to publish original research articles covering the influence of processing routes on the microstructure and properties of ceramics and ceramic-based materials. The journal is managed by Hanyang University Press and overseen by an in-house editorial team of professional editors for a rigorous peer-review process with rapid publication.