Experimental and modeling studies of methylene blue adsorption onto particles of peanut shell


Kilic F., Sarici-Ozdemir C.

PARTICULATE SCIENCE AND TECHNOLOGY, cilt.34, ss.658-664, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 34 Konu: 6
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1080/02726351.2015.1102188
  • Dergi Adı: PARTICULATE SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.658-664

Özet

In this study, adsorption of methylene blue from aqueous solution onto peanut shell has been investigated. Experimental data obtained from dye adsorption have been studied by five two-parameter (Langmuir, Freundlich, Dubinin-Radushkevich, Temkin, and Frumkin) and five three-parameter (Redlich-Peterson, Sips, Toth, Radke-Prausnitz, and Koble-Corrigan) isotherm models. Eight nonlinear error functions (sum squares errors, hybrid fractional error function, Marquardt's percent standard deviation, average relative error, sum of absolute error, the coefficient of determination, nonlinear chi-square test, and standard deviation of relative errors) were examined for isotherm equations. In order to explain the adsorption kinetics fit of pseudo-first-order, pseudo-second-order, Elovich, and intraparticle kinetic models were used. The best fitting isotherm model was the Radke-Prausnitz and kinetics model was pseudo-second-order. Adsorption experiment showed that the maximum capacity of agricultural waste for methylene blue was 67.57 L.g(-1) at 25 degrees C.