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


Degitz I. A. , Yilmaz M. , PİŞKİN S.

CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY, cilt.23, ss.581-588, 2017 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 23 Konu: 4
  • Basım Tarihi: 2017
  • Doi Numarası: 10.2298/ciceq160419012a
  • Dergi Adı: CHEMICAL INDUSTRY & CHEMICAL ENGINEERING QUARTERLY
  • Sayfa Sayısı: ss.581-588

Özet

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.