The biochemical properties of selected microorganisms (Bacillus pumilus, Brevibacterium antiquum, Myxococcus xanthus, Halobacterium salinarum and Idiomarina loihiensis), known for their ability to produce struvite through biomineralisation, were investigated. All five microorganisms grew at mesophilic temperature ranges (22-34 °C), produced urease (except I. loihiensis) and used bovine serum albumin as a carbon source. I. loihiensis was characterised as a facultative anaerobe able to use O2 and NO3 as an electron acceptor. A growth rate of 0.15 1/h was estimated for I. loihiensis at pH 8.0 and NaCl 3.5% w/v. The growth rates for the other microorganisms tested were 0.14-0.43 1/h at pH 7-7.3 and NaCl ≤1% w/v. All the microorganisms produced struvite, as identified by morphological and X-ray Powder Diffraction (XRD) analysis, under aerobic conditions. The biological struvite yield was between 1.5 and 1.7 g/L of media, the ortho-phosphate removal and recovery were 55-76% and 46-54%, respectively, the Mg2+ removal and recovery was 92-98% and 83-95%, respectively. Large crystals (>300 μm) were observed, with coffin-lid and long-bar shapes being the dominant morphology of biological struvite crystals. The characterisation of the biochemical properties of the studied microorganisms is critical for reactor and process design, as well as operational conditions, to promote phosphorus recovery from waste streams.

中文翻译：

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了解鸟粪石生物矿化微生物的生物化学特征及其在养分回收中的未来。

研究了选定的微生物（短小芽孢杆菌，安氏短杆菌，黄色粘球菌，盐杆菌嗜盐杆菌和lodiohiensis）的生化特性，这些微生物以其通过生物矿化产生鸟粪石的能力而闻名。所有五种微生物均在中温温度范围（22-34°C）下生长，产生脲酶（I. loihiensis除外），并使用牛血清白蛋白作为碳源。loihiensis的特征是能够使用O2和NO3作为电子受体的兼性厌氧菌。在pH 8.0和3.5％w / v的NaCl下，I。loihiensis的生长速率估计为0.15 1 / h。在pH 7-7.3和NaCl≤1％w / v的条件下，测试的其他微生物的生长速率为0.14-0.43 1 / h。通过形态学和X射线粉末衍射（XRD）分析确定，所有微生物均产生鸟粪石，在有氧条件下。培养基中生物鸟粪石的产量在1.5至1.7 g / L之间，正磷酸盐的去除和回收率分别为55-76％和46-54％，Mg2 +的去除和回收率分别为92-98％和83-95％ ， 分别。观察到大晶体（> 300μm），棺材盖和长条形是生物鸟粪石晶体的主要形态。研究微生物的生物化学特性的表征对于反应器和工艺设计以及操作条件至关重要，以促进从废物流中回收磷。棺材盖和长条形是生物鸟粪石晶体的主要形态。研究微生物的生物化学特性的表征对于反应器和工艺设计以及操作条件至关重要，以促进从废物流中回收磷。棺材盖和长条形是生物鸟粪石晶体的主要形态。研究微生物的生物化学特性的表征对于反应器和工艺设计以及操作条件至关重要，以促进从废物流中回收磷。