Methodology for Precious Metal Recovery in Computer Printed Circuit  

作　　者：Miguel Aguilar Cortest Martha Lilia Dominguez Patifio Antonio Rodriguez Martinez Rene Guardian Tapia Rosa Maria Melgoza Aleman 

机构地区：[1]Engineering and Applied Science Postgraduate School, University of A utonomous Morelos State, Morelos 62209, Mexico [2]Faculty of Chemical Sciences and Engineering, University of ,4utonomous Morelos State, Morelos 62209, Mexico [3]Engineering and Applied Sciences Research Centre, University of A utonomous Morelos State, Morelos 62209, Mexico

出　　处：《Journal of Chemistry and Chemical Engineering》2013年第8期759-766,共8页化学与化工（英文版）

摘　　要：The life of electronic equipment is becoming increasingly shorter and its replacement always generates a quantity of waste increase, giving rise to a problem of environmental character and still needed new options of solid waste management that will contribute to global sustainable development. Parts of these waste are TCI （the card＇s printed circuit） which containing dangerous elements and turns them into a polluting material from the soil, water and air, being harmful to human health if there is to proper and responsible way, so the recycling of TCI to obtain precious metals is an example of industrial materials that can be recycled. Despite this, large quantities of these are not recycled and some others are not considered. The objective of this work is to present a systematic and ecological methodology for the recovery of valuable materials contained in parts of used in computers, circuit boards using a leaching process. The method determines a set of variables to evaluate the kinetics of the reaction and the leaching of metals that form the substrate of metal and to establish the parameters that affect the rate of leaching of metals through a sensitivity analysis, to identify design alternatives. It determines the quantity and percentages that constitutes the motherboard, processor, video cards, accelerator graphics, network and memory cards RAM, among others and its content of metals such as Cu, Fe, Ag, Au and Pt.

关 键 词：Precious metals LEACHING waste electrical and electronic equipment printed circuit board. 

分 类 号：X172[环境科学与工程—环境科学] TN41[电子电信—微电子学与固体电子学]