Multidimensional fractionation of suspended particles by use and modification of wetting properties / selective agglomeration

通过使用和修改润湿特性/选择性团聚对悬浮颗粒进行多维分级

• 批准号: 381630096
• 负责人: Professor Dr.-Ing. Ulrich Bröckel
• 金额: --
• 依托单位: Umwelt-Campus Birkenfeld
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/381630096?language=en
• 关键词: Multidimensional; fractionation; suspended; particles; use

It is objective of this proposal to carry out a multidimensional fractionation of suspended particles smaller than 10µm based on usage and modification of surface energies. This can be done using the selective agglomeration in liquids. Agglomeration in liquids consists of two fluid and one heterogeneous solid phase. The liquid phases must have a miscibility gap. The second liquid acts as a binding liquid which preferentially wets one solid component. Thus agglomerates in the suspension are formed. Based on different surface energies and an increase of the contact angle at the roughness of particles the suspended particles can be separated according size and wetting properties or size and shape. The wetting properties can be modified by changing the pH-level or the addition of surface active substances. The resulting agglomerates consist of selectively wetted particles and show the 10- to 100-fold diameter of primary particles. Finally, the agglomerates can be separated from the suspension using a sieve

本提案的目的是根据表面能的使用和修改对小于10µm的悬浮颗粒进行多维分级。这可以使用在液体中的选择性附聚来完成。液相团聚由两个流体相和一个非均相固相组成。液相必须具有溶解间隙。第二液体用作优先润湿一种固体组分的结合液体。因此，形成悬浮液中的附聚物。基于不同的表面能和在颗粒粗糙度处接触角的增加，悬浮颗粒可以根据尺寸和润湿性质或尺寸和形状分离。可通过改变pH值或添加表面活性物质来改变润湿性能。所得附聚物由选择性润湿的颗粒组成，并显示出初级颗粒直径的10至100倍。最后，可以使用筛子将附聚物与悬浮液分离