Removal of oxytetracycline and determining its biosorption properties on aerobic granular sludge

MIHÇIOKUR H., OĞUZ M.

ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY, cilt.46, ss.174-182, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 46
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.etap.2016.07.017
  • Dergi Adı: ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.174-182
  • Anahtar Kelimeler: Pharmaceuticals, Oxytetracycline, Aerobic granular sludge, Biosorption, WALLED CARBON NANOTUBES, SOLID-PHASE EXTRACTION, NATURAL ORGANIC-MATTER, WASTE-WATER, ADSORPTION CHARACTERISTICS, PHARMACEUTICAL SUBSTANCES, AROMATIC-COMPOUNDS, ACTIVATED CARBON, ENVIRONMENT, MECHANISMS
  • Erciyes Üniversitesi Adresli: Evet

Özet

This study investigates biosorption of Oxytetracycline, a broad-spectrum antibiotic, using aerobic granular sludge as an adsorbent in aqueous solutions. A sequencing batch reactor fed by a synthetic wastewater was operated to create aerobic granular sludge. Primarily, the pore structure and surface area of granular sludge, the chemical structure and the molecular sizes of the pharmaceutical, operating conditions, such as pH, stirring rate, initial concentration of Oxytetracycline, during adsorption process was verified. Subsequently, thermodynamic and kinetic aspects of the adsorption were examined and adsorption isotherm studies were carried out. It was shown that the aerobic granular sludge was a good alternative for biosorption of this pharmaceutical. The pharmaceutical was adsorbed better at pH values of 6-8. The adsorption efficiency increased with rising ionic strength. Also, it was seen that the adsorption process was an exothermic process in terms of thermodynamics. The adsorption can be well explained by Langmuir isotherm model. (C) 2016 Elsevier B.V. All rights reserved.