Title: A review on improvement of coal-fired power plants and environmental benefits of ash utilisation

Authors: Selcuk Samanli; Haluk Celik; Ozcan Oney; Yasar Can

Addresses: Department of Mining Engineering, Faculty of Engineering, University of Usak, 64200 Usak, Turkey ' Department of Mining Engineering, Faculty of Engineering, University of Usak, 64200 Usak, Turkey ' Department of Mining Engineering, Faculty of Engineering, University of Usak, 64200 Usak, Turkey ' Department of Mining Engineering, Faculty of Engineering, University of Usak, 64200 Usak, Turkey

Abstract: Electricity generation in coal fired power plants produces large amount of residues. These materials are known as coal combustion products (CCPs) and can release pollutants to the environment. However, CCPs are environmentally and technically suitable for uses in many areas. The utilisation of CCPs in these areas helps to reduce the overall harmful effects of coal combustion for electricity generation by stabilising the environmentally toxic pollutants. The current paper reveals the possible usage areas of improved ash and presents the general approaches have been developed to obtain improved fly ash. Electrostatic separator with tribocharging technique has great potential for utilisation of coal ash. It significantly contributes to reduce fly ash disposal problems. In recent years, triboelectrostatic separators have increased significantly for the feasibility and success of the implementation of electrostatic separation. Studies carried out by various researchers on triboelectrostatic separation for utilisation of fly ash were also compiled in this article.

Keywords: bottom ash; improved fly ash; triboelectrostatic separators; coal-fired power plants; environmental benefits; coal ash utilisation; residues; coal combustion products; CCPs; environmental pollution; tribocharging; electrostatic separation.

DOI: 10.1504/IJGW.2017.080990

International Journal of Global Warming, 2017 Vol.11 No.1, pp.67 - 86

Received: 05 Jan 2015
Accepted: 17 Feb 2015
Published online: 14 Dec 2016 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article