Kinetics behavior of methylene blue onto agricultural waste


SARICI ÖZDEMİR Ç. , Kilic F.

PARTICULATE SCIENCE AND TECHNOLOGY, cilt.36, ss.194-201, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 36 Konu: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1080/02726351.2016.1240127
  • Dergi Adı: PARTICULATE SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.194-201

Özet

In the present work, investigations on a potential use of agricultural waste for the removal of methylene blue (MB) from wastewater are presented. Adsorption kinetics of MB has been studied using reaction-based and diffusion-based models. Three kinetic models, namely pseudo-first-order, pseudo-second-order, and the Elovich are analyzed at the temperature of 298 K for the reaction-based model. The kinetic studies showed that the data were well described by the pseudo-second-order kinetic model. Intraparticle diffusion, external-film diffusion, and internal-pore diffusion models characterizing MB were obtained. The results suggested that the agricultural waste has a high potential to be used as an effective adsorbent for MB adsorption. Pseudo-first-order, pseudo-second-order, and the Elovich models were employed to describe the desorption mechanism. The experimental results showed that the pseudo-second-order equation is the best model.