The Effect of an Ultrasound Radiation on the Synthesis of 4A Zeolite from Fly Ash

5th International Conference on Advanced Materials Sciences and Technology

Susanto, H.^1 ; Imani, N.A.C.^1 ; Aslamiyah, N.R.^1 ; Istirokhatun, T.^2 ; Robbani, M.H.^1

Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Indonesia Jl Prof. Sudarto-Tembalang, Semarang, Indonesia^1

Department of Environmental Engineering, Faculty of Engineering, Diponegoro University, Indonesia Jl Prof. Sudarto-Tembalang, Semarang, Indonesia^2

关键词: Distilled water;    Fusing-process;    NaOH solutions;    Ultrasonic treatments;    Ultrasound radiation;    Ultrasound waves;    Weight ratios;    Zeolite synthesis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/367/1/012026/pdf
DOI  :  10.1088/1757-899X/367/1/012026

来源: IOP

【 摘 要 】

The use of coal as a fuel source generates a lot of solid waste fly ash. Thus, efforts to reduce or utilize the amount of fly ash are urgently needed. This paper presents zeolite synthesis from fly ash. The fly ash was activated by using NaOH solution prior to fusing process with a weight ratio of 1:2 and mixing with distilled water at a weight ratio of 1:5. Thereafter, the addition of alumina with a concentration of 0.71 %, 1.42 %, 2.12 %, and 2.8 % w/v was performed. The effects of heating and ultrasound radiation on the characteristic of zeolite products were investigated. The results showed that the addition of alumina 2.8 % w/v resulted in the Si/Al ratio of zeolite 4A is ∼1. SEM images demonstrated that the presence of ultrasound wave resulted in crystals structure morphology as also supported by XRD characterization. The average crystal size for the ultrasonic treatment was 42.46 nm.