数字农科院2.0

Nitrogen and phosphorus recovery by struvite: From fundamental challenges to engineering strategies

文献类型： 外文期刊

作者： 张明叶;;梁军锋;;张克强;;刘福元;;郜兴亮;;李卓武;;马瑛骏;;常兴平;;王梦亚;;杜连柱

关键词： Struvite crystallization; Nutrient recovery; Digestate liquid fraction; Process intensification; Circular economy

期刊名称： Journal of Water Process Engineering

ISSN： 2214-7144

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： The discharge of nitrogen (N) and phosphorus (P) from livestock manure into the environment is a major environmental concern and a waste of valuable resources. Struvite (MgNH₄PO₄⋅6H₂O) crystallization enables the simultaneous recovery of N and P from digestate liquid fraction (DLF), thereby mitigating eutrophication and alleviating phosphorus scarcity. However, the scale-up of this technology from successful laboratory demonstrations to economically viable industrial application remains challenging. This review critically assesses advances in struvite crystallization, focusing on the complex interactions of key factors such as pH, magnesium sources, and heterogeneous composition of DLF. It further evaluates the agronomic performance, economic feasibility, and environmental risks of recovered struvite, emphasizing the importance of stringent quality control to limit contaminants including heavy metals, pathogens, and antibiotic resistance genes (ARGs). Finally, the review outlines essential pretreatment and process intensification strategies, such as advanced oxidation processes (AOPs), ammonia stripping, and seed-assisted crystallization, which are critical to bridging the gap between laboratory research and full-scale implementation. By integrating fundamental insights with engineering perspectives, this work aims to provide a comprehensive roadmap for the development of struvite technology within a circular nutrient economy framework

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