Conversion of Coal Fly Ash to Zeolite by Alkaline Fusion-Hydrothermal Method: A Review

DOI

10.2991/aer.k.201221.067How to use a DOI?

Keywords

coal fly ash, fusion, hydrothermal

Abstract

Coal fly ash is one of the industrial by-products that is produced from coal combustion. A large amount of coal fly ash is currently dumped at a landfill, while the current utilization of coal fly ash has been limited to the raw material of soil amendment production and cement concrete. Coal fly ash can be potentially utilized to be the raw materials for zeolite synthesis due to the high amount of silica and alumina content. Zeolite is a large group of minerals consisting of aluminosilicates that are balanced by calcium, sodium, or potassium. One of many methods to synthesize zeolite is the alkaline fusion-hydrothermal method. By using this method, it results in the high quality and yield of product. This study intended to discuss the procedure of zeolite synthesis from coal fly ash by alkaline fusion-hydrothermal method and to know the effect of operating conditions. The journal articles indicate that there are four steps to convert coal fly ash by alkaline fusion-hydrothermal method. These steps include pretreatment process, alkaline fusion process, aging process, and hydrothermal process. Aging process is useful for reducing the crystallization time in hydrothermal time. Before these steps, pretreatment is needed to purify the raw material. From the journal articles also indicates that the types of zeolite synthesis and these properties are determined by operating conditions and starting material.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Tifa Paramitha
PY  - 2020
DA  - 2020/12/22
TI  - Conversion of Coal Fly Ash to Zeolite by Alkaline Fusion-Hydrothermal Method: A Review
BT  - Proceedings of the International Seminar of Science and Applied Technology (ISSAT 2020)
PB  - Atlantis Press
SP  - 407
EP  - 414
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201221.067
DO  - 10.2991/aer.k.201221.067
ID  - Paramitha2020
ER  -