The development of technology for production of zeolites from fly-ash from Troitskaya power plant

V. A. Snegirev; V. M. Yurk

doi:10.15826/chimtech.2021.8.1.11

The development of technology for production of zeolites from fly-ash from Troitskaya power plant

V. A. Snegirev, V. M. Yurk

Abstract

The study examines the technology of processing fly ash from Troitskaya power plant for the production of zeolite. The paper presents the results of laboratory studies evaluating the suitability of fly ash from Troitskaya power plant for the production of zeolites and the development of the zeolite production process. Fly ash contains a small amount of heavy metals that can complicate processing, but contains a large amount of silicon oxide. The technology consists of high-temperature alkaline activation of fly ash and hydrochemical synthesis. The resulting powder has a specific surface area of 89.7 m²/g, determined by the BET method, and an average pore diameter of 0.345 μm. The static exchange capacity was 220 mg/g.

Keywords

fly ash; metals; zeolites; waste treatment; thermal power plant residues

Full Text:

PDF

References

Bukhari SS, Jamshid Behin J, Kazemian H, Rohani S. Conversion of coal fly ash to zeolite utilizing microwave and ultrasound energies: A review. Fuel. 2015;140:250-66. doi:10.1016/j.fuel.2014.09.077

Ilica M, Cheeseman C, Sollars C, Knight J. Mineralogy and microstructure of sintered lignite coal fly ash. Fuel. 2003;82:331-6. doi:10.1016/S0016-2361(02)00272-7

Adeeva LN, Borbat VF. Zola TETs – perspektivnoe syr’yo dlya promyshlennosti [Thermal power plant fly ash is a promising raw material for industry]. Vestnik Omskogo universiteta [Bulletin of the Omsk University]. 2009;2:137-47. Russian.

Myltykbaeva LA. Tekhnologiya polucheniya tseolitov iz zol TETs [Zeolites obtaining technology from thermal power stations ashes]. Energotekhnologii i resursosberezhenie [Energy technology and resource economy]. 2009:6:49-52. Russian.

Tumashov VF, Chernyavskiy IYa, Shapkin EN, inventors; “Ural’skiy nauchno-issledovatel’skiy i proektnyy institut stroitelnykh materialov”, assignee. Sposob polucheniya mikrosfer iz vodnoy suspenzii letuchey zoly TETs [Method of production of microspheres from the aqueous suspension of thermal power plant fly ash]. Russian Federation patent RU 2017696. 15 Aug 1994. Russian.

Rios RCA., Williams CD, Roberts CL. A comparative study of two methods for the synthesis of fly ash-based sodium and potassium type zeolites. Fuel. 2009;88:1403-16. doi:10.1016/j.fuel.2009.02.012

Kazemian H, Naghdali Z, Ghaffari Kashani T, Farhadi F. Conversion of high silicon fly ash to Na-P1 zeolite: Alkaline fusion followed by hydrothermal crystallization. Advanced Powder Technolologies. 2010;21:279-83. doi:10.1016/j.apt.2009.12.005

Molina A, Poole C. A comparative study using two methods to produce zeolites from fly ash. Minerals Engineering. 2004;17:167-73. doi:10.1016/j.mineng.2003.10.025

Jha VK, Nagae M, Matsuda M, Miyake M. Zeolite formation from coal fly ash and heavy metal ion removal characteristics of thus-obtained Zeolite X in multi-metal systems. J Environ Management. 2009;90(8):2507-14. doi:10.1016/j.jenvman.2009.01.009

Nascimento M, Soares PSM, de Souza VP. Adsorption of heavy metal cations using coal fly ash modified by hydrothermal method. Fuel. 2009;88:1714-9. doi:10.1016/j.fuel.2009.01.007

Tsennie i toksichnie elementy v tovarnyh uglyach Rossii: Spravochnik [Valuable and toxic elements in commercial coals in Russia: Directory]. Russian state company "Rosugol’". Moscow: Nedra; 1996. 235 p. Russian.

Grela A, Hebda M, Lach M, Mikula J. Thermal behavior and physical characteristics of synthetic zeolite from CFB-coal ﬂy ash. Microporous and Mesoporous Materials. 2015;220:155-62. doi:10.1016/j.micromeso.2015.08.036

Wang J, Li D, Ju F, Han L, Chang L, Bao W. Supercritical hydrothermal synthesis of zeolites from coal fly ash for mercury removal from coal derived gas. Fuel Processing Technology. 2015;136:96-105. doi:10.1016/j.fuproc.2014.10.020

DOI: https://doi.org/10.15826/chimtech.2021.8.1.11

Copyright (c) 2020 V. A. Snegirev, V. M. Yurk

This work is licensed under a Creative Commons Attribution 4.0 International License.

Chimica Techno Acta, 2014-2024
ISSN 2411-1414 (Online)
Copyright Notice

Username
Password
Remember me