Akbarzadeh Khoei Mahtab, Kurtulus Recep, Alzeer Mohammad I M, Sirviö Juho Antti, Yliniemi Juho
Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland.
Faculty of Engineering, Department of Materials Science and Engineering, Afyon Kocatepe University, Afyonkarahisar 03204, Turkey.
Langmuir. 2025 Jun 17;41(23):14607-14617. doi: 10.1021/acs.langmuir.4c04307. Epub 2025 Jun 6.
Phlogopite, a mineral produced in large quantities by the mining industry, has potential applications in the cement industry, fertilizers, and carbon storage, but its use is limited by the slow dissolution caused by its stable crystalline structure. This study investigated the combined effect of ultrasound waves and organic ligands (citrate, oxalate, and ethylenediamine) on the extraction of elements from phlogopite at acidic and neutral pH using batch dissolution experiments. It was hypothesized that sonicated samples would exhibit improved dissolution compared to mechanically stirred samples. The results showed that the dissolution of phlogopite increases in sonicated samples in the presence of an organic ligand. This enhancement depends on ligand type, with the effect being notably higher in the case of the sample containing citrate. In addition, pH plays an important role, as element extraction percentages were significantly higher at an initial pH of 4 compared to pH 7. The surface study suggests that ultrasound waves affect the morphology of phlogopite; however, there is no noticeable effect on preventing the reaccumulation of elements on the surface. The findings suggest that sonication, along with organic ligands, could be a useful processing step for the utilization of phlogopite in different applications. This research provides novel insights into the complex dynamics of enhanced dissolution and the interfacial interactions involving sonication and organic ligands.
金云母是采矿业大量生产的一种矿物，在水泥工业、肥料和碳储存方面有潜在应用，但由于其稳定的晶体结构导致溶解缓慢，其用途受到限制。本研究使用分批溶解实验，研究了超声波和有机配体（柠檬酸盐、草酸盐和乙二胺）对金云母在酸性和中性pH条件下元素提取的联合作用。假设超声处理的样品与机械搅拌的样品相比，溶解情况会有所改善。结果表明，在有机配体存在的情况下，超声处理样品中金云母的溶解增加。这种增强取决于配体类型，在含有柠檬酸盐的样品中效果尤为显著。此外，pH起着重要作用，因为初始pH为4时的元素提取率明显高于pH为7时。表面研究表明，超声波会影响金云母的形态；然而，在防止元素在表面重新积累方面没有明显效果。研究结果表明，超声处理与有机配体一起，可能是金云母在不同应用中利用的一个有用加工步骤。本研究为增强溶解的复杂动力学以及涉及超声处理和有机配体的界面相互作用提供了新的见解。
