Recycling system of phosphorus resources using iron-oxidizing bacteria and woody biomass

天然水体沉积物中氧化铁细菌产生的生物源氧化铁含有大量能吸附磷的铁氧化化合物。因此，这种积累可以在磷资源的循环利用中发挥重要作用。然而，这种富磷积累沉积物不能被有效利用，因为它很容易被流水冲走，而且很难从通常含有厌氧和恶臭泥的沉积物中收集积累物。在本研究中，开发了一种有效的方法，将木材材料载体收集氧化铁直接用作磷肥和/或磷吸附。

The biogenic iron oxides produced by iron oxidizing bacteria in the sediments of natural water bodies contains a large amount of iron-oxidized compounds that can adsorb phosphorus content. Therefore, this accumulation can play a significant role in the recycling of phosphorus resources. However, this sediment of phosphorus-rich accumulation cannot be efficiently utilized because it can be easily flushed by flowing water and because it is difficult to collect the accumulation from the sediments that usually contain anaerobic and malodorous mud. In this study, an effective method has been developed, in which a wood material carrier collecting the iron oxides can directly be used as phosphorus fertilizer and/or a phosphorus adsorption.