Sulfur removal from lignite using alkaline solution from tea waste ash by water extraction

Demirbas A.

ENERGY SOURCES, vol.22, no.9, pp.763-770, 2000 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 9
  • Publication Date: 2000
  • Doi Number: 10.1080/009083100300001582
  • Journal Name: ENERGY SOURCES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.763-770
  • Karadeniz Technical University Affiliated: No

Abstract

Some high-sulfur lignites were extracted with aqueous alkaline solution obtained from the water-soluble fraction of tea waste ash. High-sulfur removal from lignites was possible by this method. The effects of temperature, the amount of tea waste ash used, extraction time, and stirring speed were studied in the ranges 5-35 g, 350-550 K, 0.042-1.7 MPa, 15-60 min, and 300-600 rev/min, respectively. The extents of pyritic and organic sulfur removal were investigated.