Mogućnosti recikliranja i oporabe bakra iz otpadnih električnih vodiča

master's thesis

• Title (english): Recycling and recovery options of copper from electrical cable waste
• Author: Ida Mujkić
• Mentor: Irena Žmak (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2019-12-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

Električni i elektronički otpad je najbrže rastuća kategorija otpada uz komunalni otpad, te stoga postoji potreba za njegovim učinkovitim zbrinjavanjem. Kabeli i žice su neophodni dijelovi elektroničke opreme. Recikliranje otpadnih električnih kablova usredotočuje se na ponovno dobivanje vrijednih metala – bakra, s obzirom da je prosječni minimalni sadržaj bakra u rudi 0,5 % dok je prosječni sadržaj bakra u otpadnim kablovima 30 %. Prikazanim i opisanim metodama obrade otpadnih kablova, mehaničkom i pirolitičkom obradom, dobivene su frakcije bakra iste kvalitete i čistoće (99,0 %).
U procesu mehaničke obrade nastaju otpadni polimeri (oko 60 %) čije zbrinjavanje predstavlja problem za okoliš i veliki trošak u procesu oporabe. Pirolitički proces (vakuumska piroliza) ne stvara novonastali otpad već se dobiva pirolitičko ulje (oko 33 %) koje ima primjenu kao energent i predstavlja mogući prihod.

Abstract (english)

Electric and electronic waste is the fastest growing category of waste, along municipal waste, hence there is a need for its efficient disposal. Cables and wires are essential parts of electronic equipment. The main focus of recycling waste electrical cable is on renewing valuable metals - copper, considering that the average minimum share of copper in ore is 0.5 %, while the average share of copper in waste cables is 30 %. By implementing the described and discussed methods of processing waste cable, both mechanical and pyrolytic processing, have resulted in copper fractions of the same quality and purity (99.0 %).
In the process of mechanical treatment, waste polymers are formed (approx. 60 %) whose disposal represents a problem for the environment and a major expense in the recovery process. The pyrolytic process (vacuum pyrolysis) does not generate new waste, but instead generates pyrolytic oil (approx. 33 %) which is used as an energy source and represents a potential revenue.

• Keywords: električni i elektronički otpad; EE otpad; oporaba otpadnih električnih kablova; bakar; mehaničko recikliranje; vakuumska piroliza; otpadni polimeri; pirolitičko ulje
• Keywords (english): waste electrical and electronic equipment; WEEE; recovery of waste electrical cables; copper; mechanical recycling; vacuum pyrolysis; waste polymers; pyrolytic oil
• Language: croatian
• URN:NBN: urn:nbn:hr:235:378442
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2024-11-28
• Created on: 2019-11-27 20:10:28