期刊
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
卷 43, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cogsc.2023.100854
关键词
Human waste Waste to value Onboard management Bio-fertilizer; Decentralization Policy for management
The direct discharge of human urine into the environment without recycling, despite its economic potential as a fertilizer, is a major concern. Train coaches contribute significantly to the generation of urine waste. Adopting a circular economy approach can lead to synergistic water usage after nutrient recovery from urine. Advanced decentralized treatment systems such as electrochemical, bioelectrical, or reverse osmosis are effective in treating and recovering nutrients from urine waste/wastewater. The sustainable removal of nutrients like N, P, and K from human urine presents a challenge, but the recovered nutrients can be reused as fertilizers and in biodiesel production through microalgae cultivation. The commercial potential of reusing urine waste remains unexplored, but artificial intelligence may soon offer sustainable approaches for urine separation and recycling.
The current scenario of human urine being directly discharged into the environment without recycling, despite being an economical source of fertilizer. Train coaches are the major source of large-scale urine waste generation. Adopting a circular economy creates significant synergies toward usages of water generated after nutrient recovery from urine. Some advanced decentralized treatment systems, such as electrochemical, bioelectrical, or reverse osmosis, would be useful to treat and recover nutrients from urine waste/wastewater. The laborious and costly affair of removing nutrients like N, P, and K from human urine needed a sustainable solution. These recovered nutrients can be reused as fertilizers in irrigation and, indirectly, in large-scale biodiesel production by being used in microalgae cultivation. However, the potential of reusing human urine waste is yet to be explored commercially. Additionally, artificial intelligence may be explored with sustainable approaches for urine separation and recycling soon.
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