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Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
使用生物矿物形成过程从尿液中去除和回收营养物质
Robert E Colston1, Ajay Nair2, Peter Vale3
1Cranfield Water Science Institute, Cranfield University, College Road, Cranfield MK43 0AL, UK.
微生物可以从尿液中回收营养,形成生物作为可持续肥料. 这个过程有助于循环经济,将废物转化为农业的有价值资源.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 循环经济是一个循环经济.
背景情况:
- 尿液含有有价值的营养物质,如和,对于肥料生产至关重要.
- 从废水中回收营养物质支持循环经济,并缓解肥料短缺问题.
- 尿液分离可实现有针对性的营养回收,并减少废水处理厂的负载.
研究的目的:
- 通过生物矿物质的形成,研究选择的微生物从尿液中回收营养的潜力.
- 评估新鲜尿液中微生物营养物质清除和回收的效率.
- 描述回收的生物矿物质,并评估它们作为肥料的潜力.
主要方法:
- 在开放培养的新鲜尿液中使用了精选的微生物菌株 (Brevibacterium antiquum,Bacillus pumilus,Halobacterium salinarum,Idiomarina loihiensis,Myxococcus xanthus).
- 随着时间的推移,对营养物质的去除 (PO4-P,COD) 和尿素水解进行了监测.
- 用能量分散光谱和X射线衍射来分析沉物,以确定矿物成分.
主要成果:
- 与对照组相比,注射尿液显示出更高的完整微生物细胞数量.
- 通过补充,可以达到高达96%的酸盐去除.
- 观察到可溶化学氧需求 (COD) 减少了60%,尿素水解减少了35%.
- 回收的沉物被确定为含的生物,产量高达1g/L.
结论:
- 特定的微生物可以有效地在尿液中生长,并促进营养恢复.
- 从尿液中形成生物结构是一种可行的营养循环的方法.
- 回收的生物石显示出作为可持续的肥料或化学资源的使用潜力.
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