Optimized Production of Coal Fly Ash Derived Synthetic Zeolites for Mercury Removal from Wastewater

International Conference on Materials Sciences and Nanomaterials

材料科学;物理学

Tauanov, Z.^1 ; Shah, D.^1 ; Itskos, G.^2 ; Inglezakis, V.^1

School of Engineering, Chemical Engineering Department, Environmental Science and Technology Group (ESTg), Nazarbayev University, Astana

010000, Kazakhstan^1

School of Materials Engineering, Purdue University, West Lafayette

IN

47907-2045, United States^2

关键词: Experimental conditions;    Magnetite contents;    Micro-structural;    Optimized production;    Physical and chemical properties;    Synthesis reaction;    Synthesized zeolite;    Synthetic zeolites;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/230/1/012044/pdf
DOI  :  10.1088/1757-899X/230/1/012044

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Coal fly ash (CFA) derived synthetic zeolites have become popular with recent advances and its ever-expanding range of applications, particularly as an adsorbent for water and gas purification and as a binder or additive in the construction industry and agriculture. Among these applications, perpetual interest has been in utilization of CFA derived synthetic zeolites for removal of heavy metals from wastewater. We herein focus on utilization of locally available CFA for efficient adsorption of mercury from wastewater. To this end, experimental conditions were investigated so that to produce synthetic zeolites from Kazakhstani CFAs with conversion into zeolite up to 78%, which has remarkably high magnetite content. In particular, the effect of synthesis reaction temperature, reaction time, and loading of adsorbent were systematically investigated and optimized. All produced synthetic zeolites and the respective CFAs were characterized using XRD, XRF, PSA and porosimetric instruments to obtain microstructural and mineralogical data. Furthermore, the synthesized zeolites were studied for the removal of mercury from aqueous solutions. A comparison of removal eficiency and its relationship to the physical and chemical properties of the synthetic zeolites were analyzed and interpreted.