Journal
FUEL
Volume 263, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2019.116800
Keywords
Fly ash; Alkaline activation; Magnetic zeolite
Categories
Funding
- Gobernacion de Boyaca [733 Colciencias]
- Universidad Antonio Narino [2018206 PI/UAN-2019-655GFM]
- Universidad Nacional de Colombia
Ask authors/readers for more resources
Coal fly ash (CFA) was obtained from the Sochagota TermoPaipa IV power plant in Boyaca Colombia. CFA was subjected to a hydrothermal activation with NaOH. Morphology, elemental and mineralogical composition and magnetic properties of the obtained products were studied by means of SEM-EDX, XRD and VSM. Activation with NaOH (4-5 M) between 80 and 150 degrees C for 24 h produced cancrinite zeolite; activation with NaOH at 2 and 3 M at 95 degrees C produced analcime zeolite. It was found out, that the synthesized zeolites exhibit a ferrimagnetic behavior due to iron coming from CFA. The magnetic response of the obtained products allows the use of these materials to environmental applications in aqueous medium. Adsorption test for methylene blue was performed for an analcime and cancrinite zeolite, the results show that equilibrium is reached after 60 min. The data of adsorption isotherms for analcime and cancrinite zeolite were fitted to Freundlich and Langmuir model, respectively. The synthesized zeolites from CFA were successfully used to remove methylene blue from aqueous solution.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available