Physical and physicochemical cleaning of lignite and the effect of cleaning on biodesulfurization

Aksoy D. O., AYTAR ÇELİK P., Toptas Y., ÇABUK A., Koca S., KOCA H.

FUEL, vol.132, pp.158-164, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 132
  • Publication Date: 2014
  • Doi Number: 10.1016/j.fuel.2014.04.090
  • Journal Name: FUEL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.158-164
  • Keywords: Lignite cleaning, Flotation, Multigravity separator, Biodesulfurization, COAL, SULFUR, DESULFURIZATION, REMOVAL
  • Anadolu University Affiliated: Yes


In this work, physical, physicochemical and biological processes were combined to decrease the sulfur and ash content of finely ground coal. Two separation methods - flotation and a multigravity separator (MGS) - were studied to determine the optimum conditions of separation. The results showed that it is possible to obtain clean lignite that contains 34.36% ash and has a 77.39% combustible recovery by using MGS and 39.22% ash with a 37.38% combustible recovery by using flotation techniques. When the MGS and flotation products were treated by biological methods, the total sulfur contents of lignite were reduced by 54.39% and 47.08%, respectively, whereas the ash contents of MGS and flotation product were decreased by 67.61% and 60.95%, respectively. (C) 2014 Elsevier Ltd. All rights reserved.