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PYROLYSIS OF PRINTED CIRCUIT BOARD WASTE WITH THE ADDITION OF CERTAIN COMMON WASTE MATERIALS

机译:印制电路板废料的热解及某些常用废料的添加

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Every year in Europe, 8.7 million tons of electronic waste is produced, with annual electrical and electronic equipment waste (WEEE) generated in Turkey at 539,000 tons. Most of the WEEE is comprised of printed circuit boards (PCB). Among the special contents of PCB, brominated epoxy resins used as flame retardant require particular attention for Br. Pyrolysis, which would be a useful method for PCB recycling into valuable products. In addition, PCB pyrolysis products, especially pyrolytic oil, could not be directly used because of their Br content of brominated phenols. This study focuses on PCB pyrolysis using different additive materials (waste clay, construction and demolition waste or C&DW and zeolite), monitoring their effects on pyrolysis yields and also Br-transfer. Solid product was separated into its three components; copper, glass fiber and residue. According to the results, additive materials had no effect on pyrolysis product yield; however, C&DW and zeolite had an effective role on Br- capture onto the glass fiber part of the pyrolysis solid products. Additionally, high heating values and low PAH concentrations were found in liquid products obtained from the same pyrolysis batch. On the other hand, the waste clay did not show considerable effect on the Br- capture on the solid product.
机译:欧洲每年产生870万吨电子废物,土耳其每年产生的电气和电子设备废物(WEEE)为539,000吨。 WEEE的大部分由印刷电路板(PCB)组成。在PCB的特殊内容中,用作阻燃剂的溴化环氧树脂需要特别注意Br。热解,这将是将PCB回收成有价值产品的有用方法。另外,由于PCB的热解产物,特别是热解油,由于溴化苯酚的溴含量较高,因此不能直接使用。这项研究的重点是使用不同的添加剂材料(废粘土,建筑和拆除废物或C&DW和沸石)进行PCB热解,监测其对热解产率以及Br转移的影响。固体产品被分为三个部分。铜,玻璃纤维和残留物。根据结果​​,添加材料对热解产物的收率没有影响。但是,C&DW和沸石对将Br捕获到热解固体产物的玻璃纤维部分上具有有效作用。另外,在从相同的热解批次获得的液体产物中发现高发热量和低PAH浓度。另一方面,废粘土对固体产品中的Br-捕获没有显着影响。

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