Synthesis of Zeolites from Coal Fly Ash using Mine Waters

Abstract

In this study mine waters obtained from coal mining operations in South Africa were used as a substitute for pure water during the synthesis of zeolites from South African coal fly ash. Procedures that had been optimized to produce single phase zeolite Na-P1 and X using pure water were employed independently. The use of circumneutral mine water resulted in similar quality zeolite Na-P1 and X whereas the use of acidic mine drainage led to the formation of a single phase hydroxysodalite zeolite. Since these two wastes (fly ash and mine waters) are found in close proximity to each other, this study demonstrates that they can be used to ameliorate each other and at the same time produce saleable zeolitic products that can be used to offset their costs of disposal and treatment. © 2013 Elsevier Ltd. All rights reserved.

Department(s)

Mining Engineering

Keywords and Phrases

Fly ash; Mine water; Zeolite Na-P1; Zeolite X

International Standard Serial Number (ISSN)

0892-6875

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

15 Aug 2013

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