Simultaneously solidification of potassium and phosphorus using rice straw charcoal and saturated phosphorus adsorbent
Simultaneously solidification of potassium and phosphorus using rice straw charcoal and saturated phosphorus adsorbent
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稻草炭与饱和磷吸附剂同时固化钾磷
DOI：
10.1007/s40093-015-0086-2
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Harada hiroyuki,Oura Seichiro,Biswas Biplob,Watari tTakanori,Mitoma Yoshiharu
中科院分区：
文献类型：
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作者：
Akagi Kotatou,Uemoto Seigo;Harada hiroyuki,Oura Seichiro,Biswas Biplob,Watari tTakanori,Mitoma Yoshiharu
磷矿是一种昂贵且有限的资源，如果目前的全球消费率继续下去，将在几十年内耗尽。日本是世界上最发达的国家之一，磷矿石完全依赖进口，对于持续发展同样重要的钾（K）矿也变得越来越昂贵。因此，磷和钾的回收对于持续和可持续发展至关重要。在这项研究中，浓缩的P（从洗脱液中获得）和K（通过碱浸稻草炭获得）回收磷酸钾镁（PMP）通过控制添加镁（Mg）。在pH值为11 ~ 12的条件下，将等摩尔（相对于P）的Mg溶液加入到富含P和K的浸出液中，得到PMP晶体。因此，结晶形式的PMP的生产展示了有限资源回收的巨大范围。
Phosphorus (P) ore is an expensive and limited resource that will be depleted in a few decades if the current global consumption rate continues. Japan, one of the most developed countries in the world, relies completely on imported phosphate rock for P. Potassium (K) ore, which is equally important for continuous development, is also becoming increasingly expensive. The recovery of P and K is therefore important for continuous and sustainable development. In this study, concentrated P (obtained from eluent) and K (obtained through alkali leaching of rice straw charcoal) were recovered as potassium magnesium phosphate (PMP) through the controlled addition of magnesium (Mg). A PMP crystal was produced when an equimolar (with respect to P) Mg solution was added to the leaching solution (rich in P and K) at a pH range of 11–12. Thus, the production of PMP in a crystalline form demonstrates the huge scope for the recycling of limited resources.