Universidad Pedagógica y Tecnológica de Colombia, Sogamoso, Colombia.
Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia.
J Environ Manage. 2019 Nov 1;249:109381. doi: 10.1016/j.jenvman.2019.109381. Epub 2019 Aug 13.
It is presented an alternative biological method based on biomineralization mechanisms of Magnetotactic Bacteria (MTB) for the removal in groundwater, of soluble elements such as Feand Mn. In first place, it was compared the effectiveness of MTB retention methods for obtention of concentrated volumes in microorganisms, then, it was carried out an inoculation process in groundwater samples and evaluate the removal rate of Fe and Mn in constant conditions of pH and temperature. It was identified electromagnetic method is more efficient in MTB retention, and that the inoculation processes of an enriched solution with MTB in groundwater samples allow to get average removal rates of 47.86% for Fe and 15.26% for Mn. In addition, it was evaluated the removal rate of other metals due to magnetic properties of biominerals inside of MTB magnetosome. The highest removal in all cases occurred between the interval of 3 and 5 min of interaction and tended to stabilize in time.
本文提出了一种基于趋磁细菌（MTB）生物矿化机制的替代生物方法，用于去除地下水中的可溶性元素，如 Fe 和 Mn。首先，比较了 MTB 保留方法的有效性，以获得微生物中的浓缩体积，然后在地下水样本中进行接种过程，并在 pH 和温度恒定的条件下评估 Fe 和 Mn 的去除率。结果表明，电磁法在 MTB 保留方面更有效，并且在地下水样本中用 MTB 富集溶液进行接种过程可以得到 Fe 的平均去除率为 47.86%，Mn 的平均去除率为 15.26%。此外，还评估了由于 MTB 磁小体内部生物矿物的磁性而导致其他金属的去除率。在所有情况下，去除率最高的是在 3 到 5 分钟的相互作用时间间隔内，并随着时间的推移趋于稳定。
