Preparation of Adsorbent from Fly Ash for Methylene Blue Wastewater Treatment

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Liu, Dongji^1 ; Yang, Yuling^1 ; Zhao, Fengqing^2

School of Hebei University of Science and Technology, Shijiazhuang

050018, China^1

Hebei Engineering Research Center of Solid Waste Utilization, Shijiazhuang

050000, China^2

关键词: Adsorption performance;    Lattice structures;    Methylene Blue;    Microwave-assisted hydrothermal;    Optimal reaction condition;    Reaction temperature;    Removal rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/2/022040/pdf
DOI  :  10.1088/1757-899X/490/2/022040

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Fly ash contains SiO2 and Al2O3, which account for more than 60% of the total. This is similar to the composition of zeolite which is frequently be used for adsorbent. Therefore, fly ash is used to prepare adsorbent for wastewater treatment by microwave-assisted hydrothermal method. The optimal reaction conditions were determined: alkali-ash ratio of 15:1, reaction temperature of 100°C and reaction time of 0.5h. The removal rate of methylene blue is up to 97.6%. The adsorbent was characterized by SEM and FT-IR. Large number of silicon (aluminum) oxygen tetrahedrons and the porous lattice structure contribute high adsorption performance of the adsorbent.