Results 201 to 210 of about 1,032,779 (227)
Towards a Circular Economy in Electroless Pore-Plated Pd/PSS Composite Membranes: Pd Recovery and Porous Support Reuse. [PDF]
Membranes (Basel)Santos-Carballes AJ +4 more
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Low-Cost Sensor Systems and IoT Technologies for Indoor Air Quality Monitoring: Instrumentation, Models, Implementation, and Perspectives for Validation. [PDF]
Sensors (Basel)Lopes SI +12 more
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Comparative analysis among different alternative fuels for ship propulsion in a well-to-wake perspective. [PDF]
HeliyonZamboni G +3 more
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Environmental lead risk in the 21st century. [PDF]
Commun Earth EnvironChen M +8 more
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Resources, Conservation and Recycling, 2000 The recovery of platinum group metals (PGMs) from catalytic converters of spent exhaust systems is considered in this paper. To be cost-effective, recovery processes must be well over 90% efficient and so the optimisation of their operation is vital.
M K Patel, M Cross
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Separation and Purification Technology, 2023
Numerous spent automotive catalytic converters (SACCs) are being produced annually owing to the increasing number of end-of-life automobiles. Although various methods have been proposed for recycling platinum-group metals (PGMs) and rare-earth-elements (REEs) from SACCs, most achieve low recovery ratios owing to the poor understanding of the ...
Yun Lei, Dongfang Yang, Shiding Wang
exaly +4 more sources
Numerous spent automotive catalytic converters (SACCs) are being produced annually owing to the increasing number of end-of-life automobiles. Although various methods have been proposed for recycling platinum-group metals (PGMs) and rare-earth-elements (REEs) from SACCs, most achieve low recovery ratios owing to the poor understanding of the ...
Yun Lei, Dongfang Yang, Shiding Wang
exaly +4 more sources
Applied Organometallic Chemistry, 2021
AbstractA spent catalytic converter was treated with concentrated HCl and hydrogen peroxide in very mild conditions to extract approximately half of its platinum group metals (PGMs) content, mainly as chlorides. The noble metals were subsequently charged into functionalized mesoporous silica by complexation with mercapto groups.
Zaltariov Mirela-Fernanda +2 more
exaly +2 more sources
AbstractA spent catalytic converter was treated with concentrated HCl and hydrogen peroxide in very mild conditions to extract approximately half of its platinum group metals (PGMs) content, mainly as chlorides. The noble metals were subsequently charged into functionalized mesoporous silica by complexation with mercapto groups.
Zaltariov Mirela-Fernanda +2 more
exaly +2 more sources
Resource Recovery of Cerium from Spent Catalytic Converter Using Aqueous Metallurgy
Minerals, Metals and Materials Series, 2021Cerium recovery from a secondary waste stream generated after the extraction of Pt-group metals from spent catalytic converter has been investigated. Different mineral acids alone used as lixiviant could leach only 33% cerium; however, HF added acid mixture showed an increased leaching up to 96%.
Sadia Ilyas, Rajiv R Srivastava
exaly +2 more sources
Asia-Pacific Journal of Chemical Engineering, 2008
AbstractRecovery of precious metals (platinum, palladium, and rhodium) from a solid matrix sample by supercritical carbon dioxide containing a chelating ligand, a tributyl phosphate (TBP), was studied. The effects of temperature, pressure, and static extraction time on the extraction efficiency were investigated.
Koichi Fujie, Yoichi Atsuta
exaly +2 more sources
AbstractRecovery of precious metals (platinum, palladium, and rhodium) from a solid matrix sample by supercritical carbon dioxide containing a chelating ligand, a tributyl phosphate (TBP), was studied. The effects of temperature, pressure, and static extraction time on the extraction efficiency were investigated.
Koichi Fujie, Yoichi Atsuta
exaly +2 more sources