Removal of Pb2+ from aqueous solutions by rock phosphate (low-grade)

Keles E., ÖZER A., Yoruk S.

DESALINATION, cilt.253, ss.124-128, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 253
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.desal.2009.11.021
  • Dergi Adı: DESALINATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.124-128
  • Anahtar Kelimeler: Lead removal, Rock phosphate, Adsorption, Heavy metal, LEAD IMMOBILIZATION, ACTIVATED PHOSPHATE, ADSORPTION, ADSORBENT, SORPTION, APATITE, IONS
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, removal of Pb2+ from aqueous solution by adsorption on rock phosphate (low-grade) has been investigated in batch experiments.(1) The Pb2+ adsorption capability of the rock phosphate was evaluated as a function of PH, adsorbent dosage, contact time, initial Pb2+ concentration and temperature Adsorption capacity of rock phosphate was found to be 200 mg Pb2+/g of adsorbent for initial Pb2+ concentration of 50 mg/L at 25 degrees C, while the adsorbent dosage was maintained at 0 25 g/L in pH 5 and contact time 120 min Adsorption data obtained at 25, 35, 45 and 55 degrees C showed that the adsorption process was well-fitted with the pseudo-first-order adsorption rate expression and Langmuir adsorption isotherm Activation energy obtained from kinetic data was found to be 33.6 kJ mol(-1). (C) 2009 Elsevier B V All rights reserved.