Author/Authors :
uzunoğlu, deniz mersin üniversitesi - mühendislik fakültesi - kimya mühendisliği bölümü, Turkey , özer, ayla mersin üniversitesi - mühendislik fakültesi - kimya mühendisliği bölümü, Turkey , özdemir, zeynep mersin üniversitesi - mühendislik fakültesi - jeoloji mühendisliği bölümü, Turkey
Title Of Article :
THE ADSORPTION OF BASIC RED 46 ON THE NATURAL MINERAL LIMESTONE WITH MONTMORILLONITE
Abstract :
The purpose of this study is to investigate the applicability of the natural mineral limestone with montmorillonite as an adsorbent, and the removal of Basic Red 46 (BR 46) which is used textile industry and given to receiving waters with wastewaters. The optimum environmental conditions in the adsorption of BR 46 on MKT were determined as initial pH 8.0, temperature 25 ˚C and adsorbent concentration 1.0 g/L; it was observed that the adsorbed amounts increased linearly with concentration (qd=0.8*Co; R2=0.9965) in the studied initial concentration range. Langmuir, Freundlich, Temkin, Dubinin-Radushkevich isotherm models were applied to equilibrium data and it was concluded that the equilibrium data fitted better to Langmuir isotherm model. The maximum BR 46 adsorption capacity of MKT was determined as 169.5 mg/g. Experimental kinetic data fitted to the pseudo second order reaction kinetic, it was concluded that the intraparticle and external diffusion was effective in the studied adsorption process. According to the thermodynamic parameters, such as free Gibbs energy, enthalpy, entropy changes, it was determined that the adsorption of BR 46 on MKT was exothermic and spontaneous in nature. The characterization studies of MKT before and after adsorption were carried out with FTIR, SEM and XRD analyses.
NaturalLanguageKeyword :
Adsorption , Basic Red 46 , Limestone with montmorillonite
JournalTitle :
Anadolu University Journal of Science and Technology. A : Applied Sciences and Engineering
