Sulfur removal from Gediz lignite using aqueous sodium hydroxide solutions under mild oxidative conditions

Serdar Yaman*, Sadriye Küçükbayrak

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Sulfur removal from a high-sulfur Turkish lignite (Gediz) using aqueous sodium hydroxide solutions having dissolved oxygen was investigated under mild oxidative conditions. Effects of the parameters such as sodium hydroxide / lignite weight ratio, temperature, and partial pressure of oxygen were investigated within the ranges of 0.05-0.8, 423-498 K, and 1-2 MPa, respectively. Optimum values of these parameters were determined regarding sulfur removal and coal recovery. Influences of dry oxidation of the lignite sample as a pretreatment at 573 K and subsequent washing of some treated lignite samples with 1 N HCl were investigated.

Original languageEnglish
Pages (from-to)829-837
Number of pages9
JournalEnergy Sources
Volume21
Issue number9
DOIs
Publication statusPublished - 1999

Keywords

  • Desulfurization
  • Lignite
  • Sodium hydroxide

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