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dc.contributor.authorAimi Noorliyana, Hashim
dc.contributor.authorMohd Zaheruddin, Kasmuin
dc.contributor.authorMd Fazlul, Bari
dc.contributor.authorSri Asliza, Md Amin
dc.contributor.authorKamarudin, Hussin
dc.date.accessioned2009-01-23T09:30:28Z
dc.date.available2009-01-23T09:30:28Z
dc.date.issued2008-12-03
dc.identifier.citationp.9-15en_US
dc.identifier.urihttp://dspace.unimap.edu.my/123456789/4187
dc.descriptionOrganized by Universiti Kebangsaan Malaysia (UKM), 3rd - 4th December 2008 at Danau Golf Club, Bangi, Selangor.en_US
dc.description.abstractPrinted circuit boards (PCBs) were collected from obsolete or defective computers that are the largest source of the kind of waste. PCBs are composed of different materials such as polymers, ceramics and metals. The studies are focused on liberation size and floatability behaviour of the valuable metal (copper) in PCBs. PCBs sample were dry crushed and ground down to assemble the criteria of liberation particle size of samples. Then the samples were sieved with the chosen size fraction. Samples were dissolved into aqua regia solution and analyzed with Atomic Absorption Spectroscopy (AAS) to determine the presence of valuable metals in solution that consists in samples. As well, light microscope was used to determine the degree of liberation of copper from PCBs particles. The floatability test was studied using modified Hallimond tube in the alkaline range from about pH 10 to 13. The result showed the copper element is higher than the other elements in PCBs and liberate at particle size ≤300 μm. The floatability tests conducted indicated that the 2-Mercaptobenzothiazole (collector) is better than Potassium n-Amyl Xanthate at pH 10. Xanthate is very good recovering at pH 11-13 depends on kind of frother. As the dosage of the both collector increase, the percentage recovery of Cu also increase. Methyl Isobutyl Carbinol, (MIBC) is more effective than Propylene glycol as frother. This test makes possible to get a better indication of how trends will be translated to a larger scale.en_US
dc.language.isoenen_US
dc.publisherUniversiti Kebangsaan Malaysia (UKM)en_US
dc.relation.ispartofseriesMalaysian Metallurgical Conference (MMC 2008)en_US
dc.subjectPrinted circuit boardsen_US
dc.subjectLiberationen_US
dc.subjectHallimond tubeen_US
dc.subjectCooperen_US
dc.subjectPrinted circuit boards -- Recycleden_US
dc.subjectWaste materialsen_US
dc.subjectPrinted circuits - Recyclingen_US
dc.subjectElectronic apparatus and appliances -- Materials -- Recyclingen_US
dc.titleA study of comminution-liberation and floatability of Copper from printed circuit boards (PCBs) scrapen_US
dc.typeWorking Paperen_US


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