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PAGE\*MERGEFORMAT7RecyclingofE-wasteBaozhuoZhangIELIUniversityofTexasRecyclingofE-wasteDoyouknowwheretheendofyourcomputersandotherelectronicequipmentis?Mostofyouwilljustsellthemorthrowthemaway.Fewpeoplecareabouthowtoreuseelectronicequipmentsandwheretheywillgointheend.Theequipmentincludescomputers,printers,televisions,mobilephones,andtoys.Anelectronicproductwhichcan’tbeusedanylongeriscalledElectronic-waste(e-waste).About20-25millionstonesofE-wasteiscurrentlyproducefromallovertheworldeachyear(Kong,et.al.,2012).Becauseoftheincreasingwasteproductionsandpayingmoreattentiontoenvironmentalprotection,recyclingprocessesbecomemuchmoreimportantthanbefore.Itisarisingactivity,manycountriesdonothavedevelopedanappropriateenvironmentofE-wasterecycling;mostofthemregulationsofthisrecycling.Thiswilldamageenvironmentandhavebadeffectonpeople’shealth.Usingroughmethodscanalsohavebadeffectsontheenvironment.E-wasteincludessourceofvaluablemetals,suchasgold,palladium,andcopper.Peopleshouldcarenotonlyaboutthewastetreatment,butalsoabouthowtorecyclevaluablematerials.HowtorecycleE-wastehasattractedmoreconcern.TheResearchshowstherearemanykindsofmaterials,suchasferrousandnon-ferrousmetals,plastics,glassandothers.Accordingtothesepartsofwastematerials,peoplecanmakeplanstorecyclethemseparatelyandproperly.E-wastecontainsferrousmetalsandnon-ferrousmetals.Ferrousisanironmetal.Anon-ferrousmetalismetalwhichincludebothalloyandiron.Non-ferrousmetalsaremoreexpensivethanferrousmetals.Non-ferrousmetalshavemanygoodadvantages,suchaslowweight,highconductivity,non-magneticpropertyorHYPERLINK"http://en.wikipedia.org/wiki/Corrosion"\l"Resistance_to_corrosion"\o"Corrosion"resistancetocorrosion.Peopleusephysicalprocessestoseparateferrousmetalsandnon-ferrousmetals,suchaspyrometallurgicalprocessing,hydrometallurgicalprocessing,andbiometallurgicalprocessing.PyrometallurgicalprocessingisusinghightemperatureenvironmentandNaOHtorecyclemetals,meltingtemperatureduringtheprocesseswillcomedow
