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Phosphorus recovery as K-struvite from a waste stream: A review of influencing factors, advantages, disadvantages and challenges by Asamin Yesigat; Abebe Worku; Addisu Mekonnen; Wookeun Bae; Gudina Legese Feyisa; Shetie Gatew; Jing-Long Han; Wenzong Liu; Aijie Wang; Awoke Guadie is a Environmental Science article available to read on EtoBox.

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Currently, the depletion of natural resources and contamination of the surrounding environment demand a paradigm shift to resource recycling and reuse. In this regard, phosphorus (P) is a model nutrient that possesses the negative traits of depletion (will be exhausted in the next 100 years) and environmental degradation (causes eutrophication and climate change), and this has prompted the scientific community to search for options to solve P-related problems. To date, P recovery in the form of struvite from wastewater is one viable solution suggested by many scholars. Struvite can be recovered either in the form of NH-struvite (MgNHPO•6HO) or K-struvite (MgKPO•6HO). From struvite, K (MgKPO•6HO) and N (MgNHPO•6HO) are important nutrients for plant growth, but N is more abundant in the environment than K (the soil's most limited nutrient), which requires a systematic approach during P recovery. Although K-struvite recovery is a promising approach, information related to its crystallization is deficient. Here, we present the general concept of P recovery as struvite and details about K-struvite, such as the source of nutrients, factors (pH, molar ratio, supersaturation, temperature,

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Author

Asamin Yesigat; Abebe Worku; Addisu Mekonnen; Wookeun Bae; Gudina Legese Feyisa; Shetie Gatew; Jing-Long Han; Wenzong Liu; Aijie Wang; Awoke Guadie

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)