Low-cost adsorbent prepared from poplar sawdust for removal of disperse orange 30 dye from aqueous solutions

Un U. T., Ates F.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY, cilt.16, sa.2, ss.899-908, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 16 Sayı: 2
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1007/s13762-018-1716-9
  • Dergi Adı: INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.899-908
  • Anahtar Kelimeler: Poplar sawdust, Adsorbent, Pyrolysis, Isotherm, Dye removal, ACTIVATED CARBON, SEWAGE-SLUDGE, ADSORPTION CAPACITY, METHYLENE-BLUE, CONGO RED, ACID DYES, BIOCHAR, WASTE, EQUILIBRIUM, PYROLYSIS
  • Anadolu Üniversitesi Adresli: Evet

Özet

In this study, the applicability of char generated from poplar sawdust as an inexpensive adsorbent for the removal of a textile dye is investigated. Adsorbent samples were generated through pyrolysis at temperatures of 500, 600, 700 and 800 degrees C. The structural features of the char samples were illuminated by elemental analyses, FTIR, BET and SEM analyses. The effect of operating parameters such as initial dye concentration, pH and temperature were investigated and optimal values extracted. The adsorbent generated at 800 degrees C showed maximum adsorption efficiency of 83.4% at operating condition of pH 2, initial dye concentration of 50ppm and temperature of 67 degrees C. We experimentally obtained equilibrium isotherms for the adsorption of the dye. The results were modeled using Langmuir, Freundlich and the Redlich-Peterson equations with corresponding parameters being determined. The mechanism was better represented by the Redlich-Peterson isotherm.