Equilibrium, thermodynamic, and kinetic studies on some metal ions biosorption using black yeast Aureobasidium pullulans biomass. Issue 3 (6th May 2014)

• Record Type: Journal Article
• Authors: Ghaedi, M.; Brazesh, B.; Karimi, F.; Ghezelbash, G.R.
• Is Part Of: Environmental progress & sustainable energy. Volume 33:Issue 3(2014:Oct.)
• Page Start: 769
• Page End: 776
• Publication Date: 2014-05-06
• Subjects: Environmental engineering -- Periodicals; Sustainable engineering -- Periodicals; Environmental chemistry -- Periodicals; 333.7
• DOI: 10.1002/ep.11807
• Languages: English
• ISSNs: 1944-7442

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The bioremediation of Pb²⁺, Cu²⁺, Ni²⁺, and Co²⁺ ions onto Aureobasidium pullulans biomass was studied in batch procedure. The extents to which the experimental variables such as pH, contact time, stirring rate, and temperature affect the efficiency of biosorption were examined. The optimum values of pH (pH = 5), amount of biomass, and contact time (1 day) were found to be 5.0, 1 g, and 24 h, respectively. The equilibrium data were fitted to the Langmuir and Freundlich isotherm models. The Freundlich model showed better (q = 75–82 for different metal ions and R = 1) fit and thus it was more suitable for the interpretation of experimental equilibrium data for Pb²⁺, Cu²⁺, Ni²⁺, and Co²⁺ ions adsorption onto A. pullulans. The kinetic data at various contact time were analyzed by applying different models which showed that the biosorption process of metal ions onto A. pullulans biomass obeys the first order kinetics Pb²⁺ and for Co²⁺ ions while it obeys the second order kinetics for Cu²⁺ and Ni²⁺ ions. © 2014 American Institute of Chemical Engineers Environ Prog, 33: 769–776, 2014</p> </abstract>