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Technologies for the recovery of nutrients, water and energy from human urine: A review.
Chemosphere ( IF 8.1 ) Pub Date : 2020-06-15 , DOI: 10.1016/j.chemosphere.2020.127372
Asfak Patel 1 , Alka A Mungray 1 , Arvind Kumar Mungray 1
Affiliation  

The global demand for a constant supply of fertilizer is increasing with the booming of the population. Nowadays more focus is given to the recovery and reuse of the nutrients rather than synthesis of the fertilizer from chemicals. Human urine is the best available resource for the primary macronutrients (Nitrogen, Phosphorus and Potassium) for the fertilizer as it contains 10–12 g/L nitrogen, 0.1–0.5 g/L phosphorous and 1.0–2.0 g/L potassium. For the recovery of these nutrients from human urine, various technologies are available which requires source separation and treatment. . In this review, a wide range of the technologies for the treatment of source-separated human urine are covered and discussed in detail. This review has categorized the technologies based on the recovery of nutrients, energy, and water from human urine. Among the various technologies available, Bio-electrochemical technologies are environmental friendly and recovers energy along with the nutrients. Forward Osmosis is the best available technology for the water recovery and for concentrating the nutrients in urine, without or minimal consumption of energy. However, experimental work in this technology is at its prior stage. A single technology is still not sufficient to recover nutrients, water and energy. Therefore, integration of two or more technologies seems essential.



中文翻译:

从人尿中回收营养,水和能量的技术:综述。

随着人口的增长,全球对肥料持续供应的需求正在增加。如今,更多的注意力集中在营养物的回收和再利用上,而不是由化学物质合成肥料。人尿是肥料的主要常量营养素(氮,磷和钾)的最佳可用资源,因为它含有10–12 g / L的氮,0.1–0.5 g / L的磷和1.0–2.0 g / L的钾。为了从人尿中回收这些营养物,可以使用各种技术,这些技术需要进行源分离和处理。。在这篇综述中,涵盖并详细讨论了用于处理按源分离的人类尿液的多种技术。这篇综述根据人类尿液中营养,能量和水的回收对技术进行了分类。在可用的各种技术中,生物电化学技术是环境友好型的,可与营养一起回收能量。正向渗透技术是用于水回收和浓缩尿液中营养成分的最佳可用技术,而无需消耗能量或消耗最少的能量。但是,这项技术的实验工作尚处于初期阶段。单一技术仍不足以回收营养,水和能量。因此,两种或更多种技术的集成似乎必不可少。这项技术的实验工作尚处于初期阶段。单一技术仍不足以回收营养,水和能量。因此,两种或更多种技术的集成似乎必不可少。这项技术的实验工作尚处于初期阶段。单一技术仍不足以回收营养,水和能量。因此,两种或更多种技术的集成似乎必不可少。

更新日期:2020-06-26
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