环境工程学报2018，Vol.12Issue(1)：331-337,7.DOI:10.12030/j.cjee.201703218
智能手机线路板中贵金属资源化价值评价
Assessment of precious metal value in intelligent mobile phone printed circuit boards (PCBs)
摘要
Abstract
With the expansive amount of the intelligent mobile phones,a great number of waste mobile phones need to be recycled and treated.As an important source of precious metals,the mobile phone printed circuit board has always been paid more attention by researchers.In order to know the recycling value of precious metals in the intelligent mobile phone,the contents of the precious metals (Au,Ag and Pd) in different components have been analyzed through the ICP method after digestion with aqua regia.The recycling value of precious metal has been estimated by Gompertz and Carnegie Mellon models.The results show that the contents of precious metals in chip and solder (mixing capacitance and resistance) are higher than other components,in which the contents of Au,Ag and Pd reach 321.6,332.01,2.86 mg· kg-1 and 27.61,1 838.07,7.16 mg · kg-1,respectively.Especially,the gold content in chip is the highest,accounting for 69.90％ of the total amount of precious metals.It also predicts that the amount of waste intelligent mobile phone will be approximately 306 million in 2020.The recycling value of the chip is the highest in all components,which accounts for 57.70％ of the total precious metals value of all components.Therefore,chip should be recovered alone to extract valuable metals to improve its recovery rates before recycling the whole intelligent mobile phone boards.关键词
电子废弃物/智能手机/贵金属/元器件/芯片/资源化Key words
e-waste/intelligent mobile phone/precious metal/components/chip/recycling分类
资源环境引用本文复制引用
吴泽兵,王临才,王景伟,宋广翰,孟雯,王晓岩,苑文仪,李金惠,刘丽丽,白建峰,张承龙..智能手机线路板中贵金属资源化价值评价[J].环境工程学报,2018,12(1):331-337,7.基金项目
上海电子废弃物资源化协同创新中心开放基金项目(ZF1224) （ZF1224）
上海第二工业大学学科建设项目(A20NH1609B10-2) （A20NH1609B10-2）
上海第二工业大学研究生基金项目(A01GY16F030) （A01GY16F030）
