Central composite design and genetic algorithm applied for the optimization of ultrasonic-assisted removal of malachite green by ZnO Nanorod-loaded activated carbon

Ghaedi M., Azad F. N., Dashtian K., Hajati S., Goudarzi A., SOYLAK M.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.167, ss.157-164, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 167
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.saa.2016.05.025
  • Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.157-164
  • Anahtar Kelimeler: Malachite green, Genetic algorithm, ZnO-Nanorods, Central composite design, RESPONSE-SURFACE METHODOLOGY, DIRECT YELLOW 12, AQUEOUS-SOLUTION, HYDROTHERMAL SYNTHESIS, DESIRABILITY FUNCTION, METHYLENE-BLUE, ORGANIC-DYES, ADSORPTION, ADSORBENT, ISOTHERM
  • Erciyes Üniversitesi Adresli: Evet

Özet

Maximum malachite green (MG) adsorption onto ZnO Nanorod-loaded activated carbon (ZnO-NR-AC) was achieved following the optimization of conditions, while the mass transfer was accelerated by ultrasonic. The central composite design (CCD) and genetic algorithm (GA) were used to estimate the effect of individual variables and their mutual interactions on the MG adsorption as response and to optimize the adsorption process. The ZnO-NR-AC surface morphology and its properties were identified via FESEM, XRD and FTIR. The adsorption equilibrium isotherm and kinetic models investigation revealed the well fit of the experimental data to Langmuir isotherm and pseudo-second-order kinetic model, respectively. It was shown that a small amount of ZnO-NR-AC (with adsorption capacity of 20 mg g(-1)) is sufficient for the rapid removal of high amount of MG dye in short time (3.99 min). (C) 2016 Elsevier B.V. All rights reserved.