结晶
磷
鸟粪石
化学
产量(工程)
试剂
成核
核化学
材料科学
冶金
有机化学
作者
Salman Amjad,Morten Lykkegaard Christensen,Kasper Reitzel,Haiyan Qu
标识
DOI:10.1002/ceat.202300071
摘要
Abstract Phosphorus (P) recovery by crystallization of vivianite in digester supernatant (DS) was investigated. A high recovery yield (> 90 %) was obtained with vivianite even for DS with low P concentration (74 mg L −1 ), as opposed to the formation of struvite and hydroxyapatite where the yield was lower than 50–60 %. Various strategies were tested to produce vivianite with large sizes and narrow size distribution, such as a controlled reagent dosing profile, self‐seeded crystallization, and multistage cascade‐seeded crystallization. The obtained results demonstrated that the main challenge in the development of vivianite P recovery is to promote crystal growth and to suppress secondary nucleation of vivianite during the crystallization process.
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