Potential use of blast furnace slag for filtration membranes preparation: A pilot study

International Conference Building Materials, Products and Technologies

土木建筑工程

Bílek, V.^1 ; Bulejko, P.^2 ; Kejík, P.^2 ; Hajzler, J.^1 ; Másilko, J.^1 ; Bednárek, J.^1 ; Tkacz, J.^1 ; Kalina, L.^1

Brno University of Technology, Faculty of Chemistry, Materials Research Centre, Purkyova 118, Brno

612 00, Czech Republic^1

Brno University of Technology, Faculty of Mechanical Engineering, Heat Transfer and Fluid Flow Laboratory, Technická 2896/2, Brno

616 69, Czech Republic^2

关键词: Alkaline activation;    Eco-friendly;    Filtration membranes;    Low water;    Mercury intrusion porosimetry;    Pilot studies;    Pressure compaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/379/1/012012/pdf
DOI  :  10.1088/1757-899X/379/1/012012

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

This paper investigates the possibilities of the use of sodium hydroxide activated blast furnace slag for preparation of filtration barriers. The motivation for this research is searching for cheaper and more eco-friendly alternative to sintering, which is commonly used for filtration membranes preparation. Such an alternative could be alkaline activation, which is able to bind slag particles together. Low amount of activator, low water to slag (w/s) ratio together with pressure compaction was used to obtain microstructure with preserved continuous porosity. To confirm this presumption scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) analyses were carried out.