Insights into nonlinear adsorption kinetics and isotherms of vanadium using magnetised coal-polyaniline


Kajjumba G. W., Yıldırım E., Osra F., Aydın S., Tran Thi Kieu Ngan T. T. K. N., Emik S.

DESALINATION AND WATER TREATMENT, cilt.172, ss.158-166, 2019 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 172
  • Basım Tarihi: 2019
  • Doi Numarası: 10.5004/dwt.2019.24985
  • Dergi Adı: DESALINATION AND WATER TREATMENT
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.158-166
  • Anahtar Kelimeler: Error function, Conducting polymers, Batch adsorption, Wastewater, Polymerization, WASTE-WATER, REMOVAL
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

Remediation of the polluted environment has become a major concern in the 21st century. Because of its cost-benefit, ease of application, and efficacy towards the removal of pollutants, the adsorption technique has gained acceptance. In this study, adsorption kinetics of vanadium onto magnetized coal-polyaniline (MC-PANI) are investigated under batch experiments. Isotherms and kinetics are assessed using average relative error deviation, Marquardt's percent standard error deviation, the hybrid fractional error function, chi-square (chi(2)), Spearman, and the sum of the squares of the errors (SSE). Comparing all of the error functions, nonlinear models explain the adsorption of vanadium better than linear models. According to the Boyd model, the adsorption of vanadium occurs in two stages. The maximum adsorption capacity of MC-PANI is 66.20 mg V/g (C-0 = 50 mg/L, pH = 5, dose = 1.5 g/L, T = 25 degrees C). Based on Freundlich's dimensionless constant, which determines the driving force of adsorption, adsorption was less favored during the adsorption of vanadium; both amine and Fe3O4 participated in the removal of vanadium through ligand or ion exchange.