Adsorption of fluoride on gas concrete materials

OĞUZ E.

JOURNAL OF HAZARDOUS MATERIALS, cilt.117, ss.227-233, 2005 (SCI-Expanded) identifier identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 117
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.jhazmat.2004.09.020
  • Dergi Adı: JOURNAL OF HAZARDOUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.227-233
  • Anahtar Kelimeler: fluoride, adsorption, gas concrete, XRD, SEM, DRINKING-WATER, REMOVAL
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, as concrete waste materials were used to remove F- from aqueous solutions. The influence of pH. temperature, agitation rate and gas concrete dosage on F- removal was investigated by conducting a series of batch adsorption experiments. In addition, the yield and mechanisms of F- removal were explained on the basis of the results of X-ray spectroscopy and images of scanning electron microscopy, (SENT) of the particles before and after adsorption. The values of zeta potential and BET-N-2 specific surface area of gas concrete particles were defined. In this study, F- removal in excess of 96 % was obtained. It was thought that the removal of fluoride by gas concrete took place both adsorption and precipitation of Al3+ and Ca2+ salts (F-). As a result of this study. it was concluded that wastes of gas concrete were an efficient adsorbent for the removal of F-. (C) 2004 Elsevier B.V. All rights reserved.