ALKALINE HYDROTHERMAL SYNTHESIS OF ZEOLITE FROM CLASS F COAL FLY ASH

被引：0

作者：

Panda L. ^{[1
]}

Dash S. ^{[2
]}

Kar B. ^{[1
]}

Panigrahi S. ^{[3
]}

Mohanty I. ^{[2
]}

机构：

[1] Department of Chemistry, KIIT Deemed to be University, Bhubaneswar

[2] Department of Chemistry, Synergy Institute of Engineering and Technology, Dhenkanal

[3] Department of Physics, Govt. (Autonomous) College, Phulbani

来源：

Journal of Solid Waste Technology and Management | 2021年 / 47卷 / 04期

关键词：

Adsorption; Cation exchange capacity; Coal Fly Ash; Hydrothermal synthesis; Molecular sieve; Zeolitization;

D O I：

10.5276/JSWTM/2021.674

中图分类号：

学科分类号：

摘要：

Coal Fly ash is an industrial waste produced from coal-based thermal power plants. Of the total amount of fly ash generated, a small fraction is used as a supplement to Portland cement and rest of the fly ash is used as landfill. One of the novel ways of utilizing coal fly ash is through zeolitization, zeolites being hydrated aluminosilicates, and coal fly ash a rich source of alumina and silica. Coal fly ash obtained from the thermal power plant of NTPC Kaniha is subjected to alkaline hydrothermal treatment and the resulted zeolite is characterized for chemical analysis, crystal structure, thermal stability, FTIR studies, ion exchange capacities, etc. After zeolitization surface area of the product increases due to the formation of more pores and channels and also there is an increase in its crystallinity. When subjected to temperature its crystallinity first increases and then decreases and after a particular temperature the crystalline character almost vanishes. The resulted zeolite is found to be NaP1 zeolite with a high ion exchange capacity. High cation exchange (CEC) values ensure the adsorption of heavy metals by zeolites which can be used for the treatment of wastewater and industrial waste material. Thus zeolites can be hydrothermally synthesized from an industrial waste like coal fly ash at a much cheaper cost of production. The synthesized zeolite can be used for cation exchange, adsorption catalysis, and a host of other industrial applications. © 2021 Widener University School of Civil Engineering. All rights reserved.

引用

页码：674 / 681

页数：7

共 52 条

[1]

Alcantara R.R., Izidoro J.C., Fungaro D.A., Synthesis and Characterization of Surface Modified Zeolitic Nanomaterial from Coal Fly Ash, International Journal of Materials Chemistry and Physics, 1, 3, pp. 370-377, (2015)

[2]

Adamczyk Z., Biaecka B., Hydrothermal Synthesis of Zeolites from Polish Coal Fly Ash, Polish Journal of Environmental Studies, 14, 6, pp. 713-719, (2005)

[3]

Standard speciation for fly ash and raw or calcined natural pozzolan for uses as a mineral admixture in Portland cement concrete, (1993)

[4]

Ates A., Reitzmann A., Hardacre C., Yalcin H., Abatement of nitrous oxide over natural and iron modified natural zeolites, Appl. Catal. A Gen, 407, pp. 67-75, (2011)

[5]

Bandura L., Franus M., Jozefaciuk G., Franus W., Synthetic zeolites from fly ash as effective mineral sorbents for land-based petroleum spills cleanup, Fuel, 147, pp. 100-107, (2015)

[6]

Belviso C., Cavalcante F., Lettino A., Fiore S., ZeoliteSynthesized from of Fused Coal Fly Ash at low temperature using sea Water for Crystallization, Coal Combustion and Gasification Products, 1, pp. 7-13, (2009)

[7]

Breck D.W., Zeolite Molecular Sieves, (1974)

[8]

Czurda K.A., Haus R., Reactive barriers with fly ash zeolites for in situ ground water remediation, Applied Clay Science, 21, pp. 13-20, (2002)

[9]

Derkowski A., Franus W., Beran E., Czimerova A., Properties and potential applications of zeolitic materials produced from fly ash using simple method of synthesis, Powder Technology, 166, 1, pp. 47-54, (2006)

[10]

Dwivedi K., Jain P., Alawa C., SynthesisAnd Characterization of Na-P Zeolite From Coal Fly Ash, International Conference on Recent Innovations in Science Engineering and Management, pp. 650-656, (2016)

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