离子液体加热法处理废旧印刷电路板
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摘要
针对废旧印刷电路板处理不当带来的环境污染和资源浪费,本研究使用由两步合成法制备的咪唑类离子液体1-丁基-3甲基咪唑硫酸氢盐([Bmim]HSO4)为处理液,探究[Bmim]HSO4分解电路板的特性,考察温度、加热时间及电路板尺寸大小对电路板分解程度的影响。在温度270℃、加热时间20±2 min、电路板尺寸大小为2×2 cm2条件时,溴化环氧树脂的溶解程度最大,电路板的分解程度最大;另外,回收的[Bmim]HSO4化学组分基本无变化,可循环使用。电路板经[Bmim]HSO4处理后,铜箔、焊料和玻璃纤维自动分离便于后续的回收,为废旧印刷电路板的无害化处理和资源回收提供了一条新途径。
Improper treatment about waste printed circuit boards( WPCBs) can cause serious environmental pollution and resources waste. In this study,1-butyl-3-methyl-imidazolium hydrogen sulfate( [Bmim]HSO4) was synthesized through two-step reaction. Separation properties of WPCBs treated by [Bmim]HSO4 was investigated.The influence of treatment temperature,reaction time and particle size of WPCBs on dismantlement of WPCBs were focused. Experimental results indicated that WPCBs can be separated efficiently and non-polluted. The maximum dissolution of brominated epoxy resin( BER) in WPCBs occurred by controlling the system temperature,heating time,the size of WPCBs at 270℃,20 ± 2 min and 2 × 2 cm2,respectively. The used [Bmim]HSO4 can be recycled. This study offers an effectively way to recycle WPCBs and prevent the environmental pollution of WPCBs.
Improper treatment about waste printed circuit boards( WPCBs) can cause serious environmental pollution and resources waste. In this study,1-butyl-3-methyl-imidazolium hydrogen sulfate( [Bmim]HSO4) was synthesized through two-step reaction. Separation properties of WPCBs treated by [Bmim]HSO4 was investigated.The influence of treatment temperature,reaction time and particle size of WPCBs on dismantlement of WPCBs were focused. Experimental results indicated that WPCBs can be separated efficiently and non-polluted. The maximum dissolution of brominated epoxy resin( BER) in WPCBs occurred by controlling the system temperature,heating time,the size of WPCBs at 270℃,20 ± 2 min and 2 × 2 cm2,respectively. The used [Bmim]HSO4 can be recycled. This study offers an effectively way to recycle WPCBs and prevent the environmental pollution of WPCBs.
引文
[1] LU Chenyu,ZHANG Lin,ZHONG Yongguang,et al. An Overview of E-waste Management in China[J]. Mater Cycles Waste Manag(2015)17:1.
[2]郭键柄,陈正,张琪,等.废旧印刷电路板中铜的回收生产现状[J].甘肃冶金,2016,38(3):144.
[3]冯维维.过去5年亚洲电子垃圾增长63%[EB/OL]. Http://wap. sciencenet. cn,2017. 1. 15/2017. 4. 15.
[4]沈志刚.废印刷电路板回收处理技术进展[J].新材料产业,2006(10):43.
[5]薛俊芳,王娇,张宁,等.废弃印刷线路板再资源化回收方法的综述[J].现代制造工程,2015(12):134.
[6]于宁涛,铁占续,王发辉,等.废旧印制电路板资源化处理现状[J].印制电路信息,2011(10):64.
[7]张思多,鞠美庭,谢双蔚,等.废旧电路板中贵重金属回收技术综述[J].环境工程,2009,27:390.
[8]龙来寿,孙水裕.废旧印刷电路板资源化技术及无害化对策评述[J].化工进展,2009,28(6):1060.
[9] HUANG J,CHEN M,CHEN H,et al. Leaching Behavior of Copper from Waste Printed Circuit Boards with Brnsted Acidic Ionic Liquid[J]. Waste Management,2014,34(2):483.
[10]张定军,李永通,瞿朝云,等.从线路板中回收金属的功能离子液体热解水浸方法[P].中国专利:104928480A,2015.
[11] CHEN M,WANG J,HUANG J,et al. Correction:Behavior of Zinc During the Process of Leaching Copper from WPCBs by Typical Acidic Ionic Liquids[J]. Rsc Advances, 2015, 5(44):40055.
[12]康永.离子液体的特性及其应用[J].合成材料老化与应用,2011,40(1):42.
[13] ZHU P,CHEN Y,WANG L Y,et al. A New Technology for Separation and Recovery of Materials from Waste Printed Circuit Boards by Dissolving Bromine Epoxy Resins Using Ionic Liquid[J]. Journal of Hazardous Materials,2012, s 239-240(4):270.
[14] ZENG X,LI J,XIE H,et al. A Novel Dismantling Process of Waste Printed Circuit Boards Using Water-soluble Ionic Liquid[J]. Chemosphere,2013,93(7):1288.
[15]许婷婷,田鹏,陈庆阳,等.溴化1-丁基-3-甲基咪唑的合成与表征[J].辽宁化工,2016(3):250.
[16]张楠,邓天龙,刘明明,等.离子液体[Bmim]Br和[Bmim]PF6的合成及其物化性质研究[J].天津科技大学学报,2014(5):43.
[17]李文喜,张杰,李庆杰,等.酸性离子液体[BMIM]HSO4的合成及其性能测定[J].辽宁化工,2015(9):1072.
[18]王晓丹,吴文远,涂赣峰,等.酸性离子液体[BMIM]HSO4的合成及其物化性能[J].中山大学学报:自然科学版,2009,48(6):69.
[19] RANJAN Verma H,SINGH KK,MANKHAND TR. Dissolution and Separation of Brominated Epoxy Resin of Waste Printed Circuit Boards by Using Di-methyl Formamide[J]. Journal of Cleaner Production,2016,84(139):586.
[20]邢明飞,张付申.超临界丙酮降解废弃线路板中的溴化环氧树脂[J].环境工程学报,2014,1(1):317.
[21] NIKOLIC G.,ZLATKOVIC S.,CAKIC M.,et al. Fast Fourier Transform IR Characterization of Epoxy GY Systems Crosslinked with Aliphatic and Cycloaliphatic EH Polyamine Adducts[J].Sensors,2010,10:684.
[22] KANG Y.,ZHOU L.,LI X.,et al.β-Cyclodextrin-modified Hybrid Magnetic Nanoparticles for Catalysis and Adsorption[J]. Mater. Chem. 2011,21:3704.
[2]郭键柄,陈正,张琪,等.废旧印刷电路板中铜的回收生产现状[J].甘肃冶金,2016,38(3):144.
[3]冯维维.过去5年亚洲电子垃圾增长63%[EB/OL]. Http://wap. sciencenet. cn,2017. 1. 15/2017. 4. 15.
[4]沈志刚.废印刷电路板回收处理技术进展[J].新材料产业,2006(10):43.
[5]薛俊芳,王娇,张宁,等.废弃印刷线路板再资源化回收方法的综述[J].现代制造工程,2015(12):134.
[6]于宁涛,铁占续,王发辉,等.废旧印制电路板资源化处理现状[J].印制电路信息,2011(10):64.
[7]张思多,鞠美庭,谢双蔚,等.废旧电路板中贵重金属回收技术综述[J].环境工程,2009,27:390.
[8]龙来寿,孙水裕.废旧印刷电路板资源化技术及无害化对策评述[J].化工进展,2009,28(6):1060.
[9] HUANG J,CHEN M,CHEN H,et al. Leaching Behavior of Copper from Waste Printed Circuit Boards with Brnsted Acidic Ionic Liquid[J]. Waste Management,2014,34(2):483.
[10]张定军,李永通,瞿朝云,等.从线路板中回收金属的功能离子液体热解水浸方法[P].中国专利:104928480A,2015.
[11] CHEN M,WANG J,HUANG J,et al. Correction:Behavior of Zinc During the Process of Leaching Copper from WPCBs by Typical Acidic Ionic Liquids[J]. Rsc Advances, 2015, 5(44):40055.
[12]康永.离子液体的特性及其应用[J].合成材料老化与应用,2011,40(1):42.
[13] ZHU P,CHEN Y,WANG L Y,et al. A New Technology for Separation and Recovery of Materials from Waste Printed Circuit Boards by Dissolving Bromine Epoxy Resins Using Ionic Liquid[J]. Journal of Hazardous Materials,2012, s 239-240(4):270.
[14] ZENG X,LI J,XIE H,et al. A Novel Dismantling Process of Waste Printed Circuit Boards Using Water-soluble Ionic Liquid[J]. Chemosphere,2013,93(7):1288.
[15]许婷婷,田鹏,陈庆阳,等.溴化1-丁基-3-甲基咪唑的合成与表征[J].辽宁化工,2016(3):250.
[16]张楠,邓天龙,刘明明,等.离子液体[Bmim]Br和[Bmim]PF6的合成及其物化性质研究[J].天津科技大学学报,2014(5):43.
[17]李文喜,张杰,李庆杰,等.酸性离子液体[BMIM]HSO4的合成及其性能测定[J].辽宁化工,2015(9):1072.
[18]王晓丹,吴文远,涂赣峰,等.酸性离子液体[BMIM]HSO4的合成及其物化性能[J].中山大学学报:自然科学版,2009,48(6):69.
[19] RANJAN Verma H,SINGH KK,MANKHAND TR. Dissolution and Separation of Brominated Epoxy Resin of Waste Printed Circuit Boards by Using Di-methyl Formamide[J]. Journal of Cleaner Production,2016,84(139):586.
[20]邢明飞,张付申.超临界丙酮降解废弃线路板中的溴化环氧树脂[J].环境工程学报,2014,1(1):317.
[21] NIKOLIC G.,ZLATKOVIC S.,CAKIC M.,et al. Fast Fourier Transform IR Characterization of Epoxy GY Systems Crosslinked with Aliphatic and Cycloaliphatic EH Polyamine Adducts[J].Sensors,2010,10:684.
[22] KANG Y.,ZHOU L.,LI X.,et al.β-Cyclodextrin-modified Hybrid Magnetic Nanoparticles for Catalysis and Adsorption[J]. Mater. Chem. 2011,21:3704.
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