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Conference Paper: Using Al/Fe Rich Sludge Residues from Water and Wastewater Treatment Processes to Immobilize Copper Electroplating Waste
Title | Using Al/Fe Rich Sludge Residues from Water and Wastewater Treatment Processes to Immobilize Copper Electroplating Waste |
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Authors | |
Keywords | incineration waterworks sludge sewage sludge electroplating sludge leaching |
Issue Date | 2013 |
Publisher | Sino-Forest Applied Research Centre for Pearl River Delta Environment (ARCPE), Hong Kong Baptist University. |
Citation | International Conference on Solid Waste (ICSHK13), Hong Kong, China, 5-9 May 2013. In the Conference Proceedings of International Conference on Solid Waste, 2013, p. 230-234 How to Cite? |
Abstract | Hong Kong considers developing an integrated waste management facility with incineration
as the core treatment technology to resolve the key issue of insufficient landfill space. Currently, the
operation is starting with the incineration of sewage sludge. The elemental analysis of collected samples
showed that both iron and aluminumare major elements contained in sewage sludge and aluminum is the
predominant constituent in waterworks sludge. This study proposed a waste-to-resource strategy by using
the waterworks and sewage sludge incineration residues (ash) as the ceramic raw materials to stabilize
copper electroplating waste. When sintering the mixture of waterworks sludge ash and copper
electroplating waste, the CuAl2O4 spinel phase was detected at 650 oC, and became the predominant
product phase at temperature higher than 850 oC. Strong signals of the CuAl2O4 phase continued until the
temperature reached 1150 oC, and further sintering initiated the generation of other copper-containing
phases (CuAlO2, Cu2O and CuO). After sintering the mixture of sewage sludge ash and copper
electroplating waste, hematite (-Fe2O3) became an effective component to incorporate copper into the
CuFe2O4 spinel with cubic structure. The leaching performances of CuO, CuAl2O4 and CuFe2O4 were
compared by a 22-d prolonged acid leaching test with leaching fluid at pH around 2.9. The leachability
analysis pointed out the superiority of copper aluminate and ferrite in stabilizing copper, suggesting a
promising technique for using waterworks and sewage sludge ash to immobilize copper waste. |
Description | Conference Theme: Innovation in Technology and Management Session: Waste Utilization and Recycling The Proceedings can be viewed at: http://arcpe.hkbu.edu.hk/conf2013/download_files/ICSWHK2013_Proceeding.pdf |
Persistent Identifier | http://hdl.handle.net/10722/190272 |
ISBN |
DC Field | Value | Language |
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dc.contributor.author | Tang, Y | en_US |
dc.contributor.author | Shih, K | en_US |
dc.date.accessioned | 2013-09-17T15:17:00Z | - |
dc.date.available | 2013-09-17T15:17:00Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.citation | International Conference on Solid Waste (ICSHK13), Hong Kong, China, 5-9 May 2013. In the Conference Proceedings of International Conference on Solid Waste, 2013, p. 230-234 | en_US |
dc.identifier.isbn | 9789881998859 | - |
dc.identifier.uri | http://hdl.handle.net/10722/190272 | - |
dc.description | Conference Theme: Innovation in Technology and Management | - |
dc.description | Session: Waste Utilization and Recycling | - |
dc.description | The Proceedings can be viewed at: http://arcpe.hkbu.edu.hk/conf2013/download_files/ICSWHK2013_Proceeding.pdf | - |
dc.description.abstract | Hong Kong considers developing an integrated waste management facility with incineration as the core treatment technology to resolve the key issue of insufficient landfill space. Currently, the operation is starting with the incineration of sewage sludge. The elemental analysis of collected samples showed that both iron and aluminumare major elements contained in sewage sludge and aluminum is the predominant constituent in waterworks sludge. This study proposed a waste-to-resource strategy by using the waterworks and sewage sludge incineration residues (ash) as the ceramic raw materials to stabilize copper electroplating waste. When sintering the mixture of waterworks sludge ash and copper electroplating waste, the CuAl2O4 spinel phase was detected at 650 oC, and became the predominant product phase at temperature higher than 850 oC. Strong signals of the CuAl2O4 phase continued until the temperature reached 1150 oC, and further sintering initiated the generation of other copper-containing phases (CuAlO2, Cu2O and CuO). After sintering the mixture of sewage sludge ash and copper electroplating waste, hematite (-Fe2O3) became an effective component to incorporate copper into the CuFe2O4 spinel with cubic structure. The leaching performances of CuO, CuAl2O4 and CuFe2O4 were compared by a 22-d prolonged acid leaching test with leaching fluid at pH around 2.9. The leachability analysis pointed out the superiority of copper aluminate and ferrite in stabilizing copper, suggesting a promising technique for using waterworks and sewage sludge ash to immobilize copper waste. | - |
dc.language | eng | en_US |
dc.publisher | Sino-Forest Applied Research Centre for Pearl River Delta Environment (ARCPE), Hong Kong Baptist University. | - |
dc.relation.ispartof | International Conference on Solid Waste (ICSHK13) | en_US |
dc.subject | incineration | - |
dc.subject | waterworks sludge | - |
dc.subject | sewage sludge | - |
dc.subject | electroplating sludge | - |
dc.subject | leaching | - |
dc.title | Using Al/Fe Rich Sludge Residues from Water and Wastewater Treatment Processes to Immobilize Copper Electroplating Waste | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Tang, Y: tangyuan@hku.hk | en_US |
dc.identifier.email | Shih, K: kshih@hkucc.hku.hk | en_US |
dc.identifier.authority | Shih, K=rp00167 | en_US |
dc.identifier.hkuros | 222647 | en_US |
dc.identifier.spage | 230 | - |
dc.identifier.epage | 234 | - |
dc.publisher.place | Hong Kong | - |