The effect of aqueous caustic and various acid treatments on the removal of mineral matter in asphaltite

DOYMAZ I., Gulen J., Pişkin S., TOPRAK S.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS, cilt.29, sa.4, ss.337-346, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 4
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1080/15567030600819882
  • Dergi Adı: ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.337-346
  • Anahtar Kelimeler: asphaltite, demineralization, FTIR, mineral matter, X-ray diffraction, CHEMICAL DEMINERALIZATION, SIRNAK-ASPHALTITE, ALKALI TREATMENT, COAL, LIGNITES, SULFUR, TURKEY
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

In this present study, high mineral matter ( ash) asphaltites from Silopi, Southeastern Anatolia, Turkey were investigated using aqueous sodium hydroxide followed by various mineral acids such as HNO3, HCl, H2SO4, and HF. The extraction with 5% NaOH followed by leaching with 10% H2SO4 plus 40% HF was the optimum approach for chemical cleaning of the asphaltite and the maximum degree of the demineralization was found as 59.56%. At the same time, the calorific value increased to 20.86% according to the original sample. In addition, the spectrometric analyses of treated asphaltite samples were performed by FTIR and X-ray diffraction.