Effect of pH and temperature on the adsorption of bovine serum albumin onto titanium dioxide

Kopac T. | Bozgeyik K. | Yener J.

The effects of pH and temperature on the equilibrium and the kinetics of bovine serum albumin (BSA) adsorption onto titanium dioxide (TiO2) were investigated. Adsorption rate and equilibrium experiments were carried out at pH conditions of 4, 5, 10 and in a temperature range of 20-40 °C. Adsorption rate was increased with decreasing pH and increasing temperature. The Langmuir isotherm constants corresponding to adsorption capacity, Q0, were 35.8, 40.0 and 42.6 mg/g for 20, 30 and 40 °C and pH 4; and 24.5, 29.1 and 33.4 mg/g for 20, 30, 40 °C and pH 5, respectively. The BSA adsorption capacitie ...Daha fazlası

Makale 2008 Colloids and Surfaces A: Physicochemical and Engineering Aspects322 ( 01.Mar ) , pp. 1 - 28 408 Görüntülenme

Effects of acceptor phase and donor phase properties on sodium ions transport from aqueous solutions using liquid membrane systems

Altın, Süreyya | Demircioğlu, Nuhi | Peker, İbrahim | Altın, Ahmet

In this study, the effects of the acceptor phase and the donor phase properties on sodium ion transport were examined in bulk liquid membrane systems. In the experiments, toluene and a mixture of toluene-dichloromethane (90-10%, v/v) containing 1 × 10-3 M DB18C6 (dibenzo18crown6) was used as the membrane. In order to examine the effects of different the acceptor phases, firstly H2SO4, HCl, HNO3, CH3COOH and distilled water were used as the acceptor phases. Furthermore, the experiments were performed by using various acid concentrations such as 2, 0.2 and 0.02 M of acids, as the acceptor phase. ...Daha fazlası

Makale 2007 Colloids and Surfaces A: Physicochemical and Engineering Aspects306 ( 1-3 SPEC. ISS. ) , pp. 1 - 21 793 Görüntülenme