人类尿液:一种用于生化生产的的新来源
Chibambila Simbeye1, Caitlin Courtney1, Prithvi Simha2
1Civil Engineering Department & Future Water Institute, University of Cape Town, 7700 Cape Town, South Africa.
The Science of the total environment
|June 2, 2023
概括
从人体尿液中提取作为维亚尼特是可行的. 将尿液pH值优化至6.0并控制铁与的比率,可最大限度地提高维亚尼特的产量和纯度,用于废水处理.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 人类尿液是家庭废水中的重要来源,占总负载的50%.
- 分散的卫生系统为从尿液中回收提供了一个有希望的途径.
- 维维亚尼特 (铁酸盐) 是回收的目标矿物,因为其稳定性和潜在的应用.
研究的目的:
- 为了研究从人类尿液中恢复作为vivianite.
- 为了确定最大限度地提高vivianite产量和纯度的最佳条件.
- 了解尿液化学,铁源,温度和pH值对维亚尼特沉的影响.
主要方法:
- 实验使用新鲜和合成人体尿液进行.
- 测试了不同尿液pH值,铁盐类型,反应温度和铁与 (Fe:P) 的摩尔比率.
- 在不同的条件下分析了vivianite的产量和纯度.
- 评估了用脱离离子水洗对纯度的影响.
主要成果:
- 尿液类型影响了vivianite的产量和纯度,而铁盐类型和温度则没有影响.
- 在pH值6.0下,高产量 (93±2%) 和纯度 (79±3%) 的最佳条件得到了实现.
- 为了最大限度地提高产量和纯度,需要在1.5:1到2.2:1之间的Fe:P摩尔比.
- 用脱离离子水洗,在pH值为6.0.0的情况下,从新鲜尿液中提升了15.5%的维亚尼特纯度.
结论:
- 从人类尿液中以维亚尼特的形式回收是一种可行的策略.
- 尿液pH值是控制维亚尼特沉和纯度的关键因素.
- 精心控制Fe:P摩尔比率对于高效的回收和最大限度地减少共同沉至关重要.
- 这项研究为废水中的可持续管理提供了新的见解.
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