Adsorption of Dyes from Aqueous Textile By-Products on Activated Carbon from Scenedesmus obliquus

Şahin S. C., Aksu S.

ANALYTICAL LETTERS, cilt.50, sa.11, ss.1812-1830, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 50 Sayı: 11
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1080/00032719.2016.1244826
  • Dergi Adı: ANALYTICAL LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1812-1830
  • Anahtar Kelimeler: Activated carbon, adsorption, Astrazon red, microalgae, Scenedesmus obliquus, WATER-TREATMENT, METHYLENE-BLUE, ALGAL BIOMASS, SURFACE-AREA, REMOVAL, SORPTION, WASTE, ISOTHERMS, KINETICS, BIOSORPTION
  • Akdeniz Üniversitesi Adresli: Evet

Özet

The adsorption of activated carbon prepared from Scenedesmus obliquus (algae) was evaluated through adsorption of Astrazon red. The adsorption efficiency of activated carbon was determined based on the specific surface area and pore size distribution. These results were compared with the results obtained with untreated algae. Approximately a 3-fold increase in the percentage of dye removal was observed for activated carbon compared to the untreated material. The primary reason for this observation may be the increase in specific surface area and total pore volume by chemical activation from 0.0136 to 423.7001 m(2) g(-1) and from 0.0012 to 0.1643 cm(3) g(-1), respectively. A pseudo-second-order model was fit with the kinetic data and the results indicate chemical adsorption. The maximum adsorption capacity of activated carbon was 181.82 mg g(-1) at 25 degrees C according to Langmuir isotherm model.