pH 和酸盐在稀土元素生物吸收与活的酸性微藻生物吸收中的作用
Jens Kastenhofer1, Oliver Spadiut2, Vladimiros G Papangelakis1
1Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON, M5S 3E5, Canada.
Applied microbiology and biotechnology
|March 14, 2024
概括
像Galdieria sulphuraria这样的酸性微藻显示出稀土元素 (REE) 恢复的潜力. 最佳的REE生物吸收与藻类生长分开发生,特别是在pH 5时,以防止酸盐沉.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
背景情况:
- 对稀土元素 (REEs) 的需求不断增加,需要有效的废物回收方法.
- 酸性微藻对REE生物吸收有希望,因为它们对金属有耐受性,不需要有机碳.
- 硫藻 (Galdieria sulphuraria) 是一种酸性微藻,研究了其REE生物吸收能力.
研究的目的:
- 为了评估Galdieria sulphuraria对稀土元素 (REE) 从水溶液中的生物吸收.
- 为了确定REE生物吸收的最佳条件,考虑pH和酸盐的存在.
- 评估代谢活动和矩阵离子对REE生物吸收效率的影响.
主要方法:
- 在不同的pH值和营养条件下种植Galdieria sulphuraria.
- 用含有高达15ppm REEs的溶液进行生物吸收实验.
- 使用 (La) 和酸盐分析水中的REE度和评估降水量.
主要成果:
- 在酸性pH (1.5-2.5) 时,G. sulphuraria对REE的生物吸收很差,但在没有酸盐的介质中,pH为5.0时增加了24倍.
- 代谢活动对REE吸附产生了负面影响,这表明需要分离生长和吸附阶段.
- 在测试条件下,酸 (LaPO4) 沉发生,突出显示了矩阵效应,特别是在酸存在的情况下.
结论:
- 用G. sulphuraria进行最佳的REE生物吸收需要与活跃生物质增长分开的条件,特别是避免吸收期间使用酸盐.
- 将pH调整为5.0显著提高了REE生物吸收能力.
- 仔细的实验设计对于在生物吸收研究中考虑酸盐等矩阵离子相互作用至关重要.
关键词:
硫化廊 (Galdieria sulphuraria) 是一座城市的建筑.这些人是酸性爱者.藻类生物质是一种藻类生物质.生物积累 生物积累 生物积累生物吸收 生物吸收稀土元素 稀土元素 稀土元素更多相关视频
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