The underutilization of production capacity in recycling waste lithium-ion battery(LIB)highlights the demand for cost-effective and eco-friendly processes.This study challenges conventional practices by proposing a pr...The underutilization of production capacity in recycling waste lithium-ion battery(LIB)highlights the demand for cost-effective and eco-friendly processes.This study challenges conventional practices by proposing a product-oriented strategy that converts spent LIB into functional materials rather than only conventional metal salts.Phase evolution thermodynamics first identifies the conditions for selective extraction,enabling a novel oxygen-assisted chlorination roasting system.This single-step process achieves two transformative outcomes:lithium is converted to carbonate product,while cobalt is reconstructed into a functional catalyst serving as peroxymonosulfate activators.Specifically,99%of Li is recovered as lithium carbonate(99.6%purity),while upcycled catalyst demonstrates equivalent performance to commercial alternatives,achieving>98%efficiency in model reactions.Besides,system scaling analysis confirms dual sustainability advantages.Life-cycle assessment reveals a 61.5%reduction in carbon footprint compared to traditional recycling,while techno-economic analysis shows 50%higher profitability.This paradigm shift from simple metal recovery to functional material synthesis addresses both environmental and economic challenges in LIB recycling.Our findings demonstrate that this product design can enhance sustainability without compromising technical performance,providing a new slight for LIB recycling.展开更多
Mesophilic and thermophilic anaerobic fermentation performance of waste activated sludge(WAS)pretreated by enzymes catalysis associated with microbial community shifts were investigated.WAS disintegration was boosted ...Mesophilic and thermophilic anaerobic fermentation performance of waste activated sludge(WAS)pretreated by enzymes catalysis associated with microbial community shifts were investigated.WAS disintegration was boosted considerably by enzymolysis with 8750 mg/L of soluble COD release within 180 min.Mesophilic anaerobic fermentation(MAF)produced nearly equal VFA accumulation with over 3200 mg COD/L compared with that of thermophilic fermentation(TAF).Bacterial community consortia showed great shifting differences in dynamics of main T⁃RFs between MAF and TAF.Moreover,MAF was conducive to form intermediate bacterial community evenness compared to TAF,which preserved a robust function of VFA production.The enzymes catalysis prompted bio⁃energy(electricity)recovery potential of WAS organics via anaerobic fermentation(MAF/TAF)with evaluating electricity conversion efficiency of 0.75-0.82 kW·h/kg VSS(3.9 times higher than control test).Finally,this study proposed some novel thinking on future WAS treatment/management towards energy recovery coupled with energy⁃sufficient wastewater treatment by co⁃locating WAS anaerobic fermentation,MFC plant with wastewater treatment plant(s).展开更多
The recycling of lithium-ion batteries(LIBs)is essential for promoting the closed-loop sustainable development of the LIB industry.However,progress in LIB recycling technologies is slow.There are significant gaps betw...The recycling of lithium-ion batteries(LIBs)is essential for promoting the closed-loop sustainable development of the LIB industry.However,progress in LIB recycling technologies is slow.There are significant gaps between academic research and industrial application,which hinder the industrialization of new technologies and the improvement of existing ones.Here we show a universal model for spent LIB-lithium recycling(SliRec)to evaluate the applicability and upgrading potential across various recycling technologies.Instead of modeling the entire recycling process,we focus on partial processes to enable a comparative analysis of environmental and economic impacts.We find a strong correlation between lithium concentration(LC)and the advancement of recycling technologies,where higher LC is associated with a reduced carbon footprint and increased economic benefits.The implementation of high-level recycling technology can result in an 85.91%reduction in carbon footprint and a 5.97-fold increase in economic returns.Additionally,we explore the effects of technological interventions through scenario analysis,demonstrating that while low-level recycling technology faces more substantial challenges in upgrading,it holds greater potential for reducing carbon emissions(2.38 kg CO_(2)-eq mol^(-1))and enhancing economic benefits(CNY 11.04 mol^(-1)).Our findings emphasize the significance of process modeling in evaluating the quality of spent LIB recycling technologies,and can provide comparative information for the application of emerging technologies or the upgrade of existing ones.展开更多
基金supported by the Natural Science Foundation of Xiamen,China(3502Z202372038)the Opening Project of Key Laboratory of Solid Waste Treatment and Resource Recycle,Ministry of Education(23kfgk04)the Scientific Research Funds of Huaqiao University(Grant ID:20221XD053)。
文摘The underutilization of production capacity in recycling waste lithium-ion battery(LIB)highlights the demand for cost-effective and eco-friendly processes.This study challenges conventional practices by proposing a product-oriented strategy that converts spent LIB into functional materials rather than only conventional metal salts.Phase evolution thermodynamics first identifies the conditions for selective extraction,enabling a novel oxygen-assisted chlorination roasting system.This single-step process achieves two transformative outcomes:lithium is converted to carbonate product,while cobalt is reconstructed into a functional catalyst serving as peroxymonosulfate activators.Specifically,99%of Li is recovered as lithium carbonate(99.6%purity),while upcycled catalyst demonstrates equivalent performance to commercial alternatives,achieving>98%efficiency in model reactions.Besides,system scaling analysis confirms dual sustainability advantages.Life-cycle assessment reveals a 61.5%reduction in carbon footprint compared to traditional recycling,while techno-economic analysis shows 50%higher profitability.This paradigm shift from simple metal recovery to functional material synthesis addresses both environmental and economic challenges in LIB recycling.Our findings demonstrate that this product design can enhance sustainability without compromising technical performance,providing a new slight for LIB recycling.
基金Sponsored by the Scientific Research Funds of Huaqiao University(Grant No.605-50Y18055).
文摘Mesophilic and thermophilic anaerobic fermentation performance of waste activated sludge(WAS)pretreated by enzymes catalysis associated with microbial community shifts were investigated.WAS disintegration was boosted considerably by enzymolysis with 8750 mg/L of soluble COD release within 180 min.Mesophilic anaerobic fermentation(MAF)produced nearly equal VFA accumulation with over 3200 mg COD/L compared with that of thermophilic fermentation(TAF).Bacterial community consortia showed great shifting differences in dynamics of main T⁃RFs between MAF and TAF.Moreover,MAF was conducive to form intermediate bacterial community evenness compared to TAF,which preserved a robust function of VFA production.The enzymes catalysis prompted bio⁃energy(electricity)recovery potential of WAS organics via anaerobic fermentation(MAF/TAF)with evaluating electricity conversion efficiency of 0.75-0.82 kW·h/kg VSS(3.9 times higher than control test).Finally,this study proposed some novel thinking on future WAS treatment/management towards energy recovery coupled with energy⁃sufficient wastewater treatment by co⁃locating WAS anaerobic fermentation,MFC plant with wastewater treatment plant(s).
基金supported by the Natural Science Foundation of Xiamen,China(3502Z202372038)the Opening Project of the Key Laboratory of Solid Waste Treatment and Resource Recycle,Ministry of Education,23kfgk04,and the Scientific Research Funds of Huaqiao University。
文摘The recycling of lithium-ion batteries(LIBs)is essential for promoting the closed-loop sustainable development of the LIB industry.However,progress in LIB recycling technologies is slow.There are significant gaps between academic research and industrial application,which hinder the industrialization of new technologies and the improvement of existing ones.Here we show a universal model for spent LIB-lithium recycling(SliRec)to evaluate the applicability and upgrading potential across various recycling technologies.Instead of modeling the entire recycling process,we focus on partial processes to enable a comparative analysis of environmental and economic impacts.We find a strong correlation between lithium concentration(LC)and the advancement of recycling technologies,where higher LC is associated with a reduced carbon footprint and increased economic benefits.The implementation of high-level recycling technology can result in an 85.91%reduction in carbon footprint and a 5.97-fold increase in economic returns.Additionally,we explore the effects of technological interventions through scenario analysis,demonstrating that while low-level recycling technology faces more substantial challenges in upgrading,it holds greater potential for reducing carbon emissions(2.38 kg CO_(2)-eq mol^(-1))and enhancing economic benefits(CNY 11.04 mol^(-1)).Our findings emphasize the significance of process modeling in evaluating the quality of spent LIB recycling technologies,and can provide comparative information for the application of emerging technologies or the upgrade of existing ones.
