A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Phosphorus Recovery from Eutrophic Lake Water Using Al/Fe Micro-Electrolysis
https://orcid.org/0000-0001-6759-6580
https://orcid.org/0000-0002-1128-3611
Phosphorus (P) is a critical and nonrenewable resource. P crisis threatens future global food security, while P-induced eutrophication is damaging aquatic ecosystems. In eutrophic lakes, P is often heavily concentrated in algae-accumulated zones, creating “P reserves” for reuse. In this study, P was harvested from eutrophic lake water using Al/Fe micro-electrolysis and the stability of the harvested P was tested through anoxia incubation. The results showed that, compared with Fe micro-electrolysis, Al micro-electrolysis was more effective at co-harvesting dissolved and particulate P, and the yields were stable under anoxia conditions, making them suitable as slow-release P fertilizers. At 15 V, the P harvesting efficiency of Al micro-electrolysis was 2.68 times higher than that of Fe micro-electrolysis. This could be attributed to the powerful netting–bridging of amorphous Al hydroxides, which favor floatation separation and thereby P harvesting. Under anoxia, the transformation of Fe species caused P release from Fe micro-electrolysis yields, potentially enhancing P loss through leaching if the yields are used as soil P fertilizers. This study provides a promising strategy for P resource recycling from eutrophic lakes, which may be beneficial to the restoration of lake ecosystems and mitigation of the P crisis.
Micro-electrolysis is effective at co-harvesting dissolved and particulate P for P recovery from eutrophic lake water.
Phosphorus Recovery from Eutrophic Lake Water Using Al/Fe Micro-Electrolysis
https://orcid.org/0000-0001-6759-6580
https://orcid.org/0000-0002-1128-3611
Phosphorus (P) is a critical and nonrenewable resource. P crisis threatens future global food security, while P-induced eutrophication is damaging aquatic ecosystems. In eutrophic lakes, P is often heavily concentrated in algae-accumulated zones, creating “P reserves” for reuse. In this study, P was harvested from eutrophic lake water using Al/Fe micro-electrolysis and the stability of the harvested P was tested through anoxia incubation. The results showed that, compared with Fe micro-electrolysis, Al micro-electrolysis was more effective at co-harvesting dissolved and particulate P, and the yields were stable under anoxia conditions, making them suitable as slow-release P fertilizers. At 15 V, the P harvesting efficiency of Al micro-electrolysis was 2.68 times higher than that of Fe micro-electrolysis. This could be attributed to the powerful netting–bridging of amorphous Al hydroxides, which favor floatation separation and thereby P harvesting. Under anoxia, the transformation of Fe species caused P release from Fe micro-electrolysis yields, potentially enhancing P loss through leaching if the yields are used as soil P fertilizers. This study provides a promising strategy for P resource recycling from eutrophic lakes, which may be beneficial to the restoration of lake ecosystems and mitigation of the P crisis.
Micro-electrolysis is effective at co-harvesting dissolved and particulate P for P recovery from eutrophic lake water.
Phosphorus Recovery from Eutrophic Lake Water Using Al/Fe Micro-Electrolysis
https://orcid.org/0000-0001-6759-6580
https://orcid.org/0000-0002-1128-3611
Phosphorus (P) is a critical and nonrenewable resource. P crisis threatens future global food security, while P-induced eutrophication is damaging aquatic ecosystems. In eutrophic lakes, P is often heavily concentrated in algae-accumulated zones, creating “P reserves” for reuse. In this study, P was harvested from eutrophic lake water using Al/Fe micro-electrolysis and the stability of the harvested P was tested through anoxia incubation. The results showed that, compared with Fe micro-electrolysis, Al micro-electrolysis was more effective at co-harvesting dissolved and particulate P, and the yields were stable under anoxia conditions, making them suitable as slow-release P fertilizers. At 15 V, the P harvesting efficiency of Al micro-electrolysis was 2.68 times higher than that of Fe micro-electrolysis. This could be attributed to the powerful netting–bridging of amorphous Al hydroxides, which favor floatation separation and thereby P harvesting. Under anoxia, the transformation of Fe species caused P release from Fe micro-electrolysis yields, potentially enhancing P loss through leaching if the yields are used as soil P fertilizers. This study provides a promising strategy for P resource recycling from eutrophic lakes, which may be beneficial to the restoration of lake ecosystems and mitigation of the P crisis.
Micro-electrolysis is effective at co-harvesting dissolved and particulate P for P recovery from eutrophic lake water.
Phosphorus Recovery from Eutrophic Lake Water Using Al/Fe Micro-Electrolysis
Zhang, Chaoyang (author) / Kong, Ming (author) / Kong, Lingwei (author) / Zhu, Lin (author) / Zhu, Xuexia (author) / Yin, Yue (author) / Yu, Jianghua (author) / Shi, Wenqing (author)
ACS ES&T Water ; 3 ; 1134-1140
2023-04-14
Article (Journal)
Electronic Resource
English
Phosphorus release from sediment in a small eutrophic Italian lake
| British Library Online Contents | 2005