BASIC TEXTILE DYE ADSORPTION FROM AQUEOUS SOLUTION AND SYNTHETIC DYE BATH WASTEWATER BY MODIFIED EUCALYPTUS BARKS


BALCI B.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.25, ss.6124-6131, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 25
  • Basım Tarihi: 2016
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Sayfa Sayısı: ss.6124-6131

Özet

In the present study, acid modified Eucalyptus camaldulensis bark (AMEB) was tested for potential application as a low-cost adsorbent for the removal of the textile dye Basic Blue 41 (BB41). Adsorption experiments were performed with aqueous solution (BB41+distilled water) and synthetic dye bath wastewater (SDBW) to investigate the potential application of AMEB in the textile industry. The effects of various parameters, namely initial dye concentration, temperature, pH and AMEB dosage on adsorption were investigated. It was found that the adsorption capacity of AMEB increases with increasing BB41 concentration and temperature and decreasing dosages of AMEB. 0.6 g AMEB was found to be sufficient to remove 250 mg/L BB41 from 150 mL SDBW with similar to 85% removal efficiency. Langmuir isotherm predicted 364.972 mg/g maximum adsorption capacity with 0.990 correlation coefficient. The Freundlich isotherm model described the adsorption process better (R-2=0.997) than the Langmuir and Tempkin isotherm models. Freundlich constant 'n' also indicated that the adsorption is favorable. The thermodynamic analysis showed that the adsorption of BB41 onto AMEB was an endothermic process. Statistical evaluations were performed using SPSS Statistics 20.0 with a confidence interval of 95% (p <= 0.05).