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http://dx.doi.org/10.7844/kirr.2021.30.3.47

Analysis of Resource and GHG Reduction by Recycling Palladium in Plated Spent Catalyst Solution  

Shin, Ka-Young (Program in Global Industrial & Environmental Technology Convergence, Graduate School, Inha University)
Lee, Seong-You (Program in Global Industrial & Environmental Technology Convergence, Graduate School, Inha University)
Kang, Hong-Yoon (Program in Global Industrial & Environmental Technology Convergence, Graduate School, Inha University)
Publication Information
Resources Recycling / v.30, no.3, 2021 , pp. 47-54 More about this Journal
Abstract
Palladium present in colloidal-type plated spent catalyst solution that is used in electroless plating process has not been recovered but discharged as wastewater so far. Recyclig of paladium in colloidal-type plated spent catalyst solution is achieved with this study. This study presents the estimation of resource consumption and GHG emissions during the recycling and disposal of palladium in the plated spent catalyst solution using life cycle assessment. The reduction of resources and GHG are also estimated. Based on the palladium amount of 1 kg during disposal, the GHG emission amount was estimated to be 9.67E+03 kgCO2eq., and the amount of resource consumption was 3.94E+01 kgSb-eq. However, GHG emission was 1.96E+03 kgCO2eq., and the amount of resource consumption was 1.54E+01 kgSb-eq. during recycling. Considering the major substances affecting GHG emissions and amount of resource consumption, CO2 was found to significantly affect GHG emissions, accounting for 91.42% in disposal and 98.37% in recycling. The major substance affecting the amount of resource consumption was hard coal, which accounted for 40.63% in disposal and 60.73% in recycling. Upon recycling 1 kg palladium, 8,967.17 kgCO2eq. of greenhouse gas emission was reduced, while the resource consumption was reduced to 10.10 kg Sb-eq. In addition, the direct palladium resource reduction rate due to palladium recycling was 50%.
Keywords
Palladium Recycling; Spent Catalyst Solution; Life Cycle Assessment (LCA); Greenhouse Gas (GHG) Reduction; Resource Reduction;
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Times Cited By KSCI : 1  (Citation Analysis)
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