RECYCLE OF GOLD MINE TAILINGS SLURRY INTO MCM-41 MESOPOROUS SILICA WITH HIGH SPECIFIC SURFACE AREA


Creative Commons License

Degitz I. A., Yilmaz M., PİŞKİN S.

CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY, vol.23, no.4, pp.581-588, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 4
  • Publication Date: 2017
  • Doi Number: 10.2298/ciceq160419012a
  • Journal Name: CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.581-588
  • Keywords: MCM-41, synthesis, waste treatment, gold mine, COAL FLY-ASH, MOLECULAR-SIEVE MCM-41, CONVERSION, ZEOLITE
  • Yıldız Technical University Affiliated: Yes

Abstract

In this study, MCM-41 was prepared from the gold mine tailings slurry as an alternative silica source. The effects of the reaction time, temperature, and pH adjustments on the synthesis of MCM-41 were investigated. The optimum condition for the synthesis process of pure and highly ordered MCM-41 from tailings slurry was found to be at 30 degrees C for 60 min with a pH of 11. In addition, MCM-41 was synthesized from a pure silica source, in order to compare the structural properties of the obtained sample from that of the slurry produced at optimum conditions. The samples synthesized from tailings slurry had a high surface area of 983 m(2)/g and a pore volume of 0.74 cm(3)/g. The structural properties of the samples produced from the slurry were closely related with those that were synthesized from a pure silica source. Results indicate that the tailings slurry has the potential to be used as a cheap, alternative silica source which can be used for the synthesis of a pure and ordered mesoporous silica MCM-41.