@article{article_97475, title={Biosorption of Copper (II) from Aqueous Solution by Saccharomyces cerevisiae : Kinetics and Thermodynamics}, journal={Gazi University Journal of Science}, volume={25}, pages={783–791}, year={2012}, author={Balbası, Muzaffer and Tosun, Ayse and Akcelık, Oznur and Ergun, Mubeccel}, keywords={Biosorption, Wastewater, Cu ion, Kinetic, Saccharomyces cerevisia}, abstract={<p class="MsoNormal" style="text-align: justify; margin: 0cm 46.2pt 0pt 36pt; mso-layout-grid-align: none; mso-pagination: none;"> <span style="font-size: 8pt; mso-no-proof: yes;" lang="EN-GB"> <span style="font-family: Times New Roman;">Biosorption equilibrium, kinetics, and thermodynamics of Cu ions onto <em style="mso-bidi-font-style: normal;">S. cerevisiae </em> <span style="mso-spacerun: yes;">  </span>were studied in a batch system with respect to temperature and initial ion concentration. Biosorption efficiency <span style="mso-spacerun: yes;">  </span>increased up to Cu ion initial concentration of 75 mg/L, and then decreased with the increasing metal ion concentration. Equilibrium uptake value changed from 9.8 mg/g at 20º C to 14.5 mg/g at 50º C. Langmuir isotherm model was found to be in good correlation with data.. Biosorption enthalpy indicated that the biosorption process has an endothermic nature. Pseudo first order, pseudo second order and intraparticle diffusion models were applied to the experimental data. High value of correlation coefficients (>0.99) and the comparison of the experimental equilibrium concentration of copper with value calculated from the kinetic model indicated that the Cu(II) uptake by <em style="mso-bidi-font-style: normal;">S. cerevisiae </em> was best described by pseudo second order rate model. The thermodynamic constants of biosorption namely, ∆Gº, ∆Hº and ∆Sº were also evaluated. </span> </span> </p> <p class="MsoNormal" style="text-align: justify; margin: 0cm 46.2pt 0pt 36pt; mso-layout-grid-align: none; mso-pagination: none;"> <span style="font-size: 8pt; mso-no-proof: yes;" lang="EN-GB"> <span style="font-family: Times New Roman;">  </span> </span> </p> <p class="MsoNormal" style="text-align: justify; margin: 0cm 46.2pt 0pt 36pt; mso-layout-grid-align: none; mso-pagination: none;"> <span style="font-size: 8pt; mso-no-proof: yes;" lang="EN-GB"> <span style="font-family: Times New Roman;">  </span> </span> </p> <p> <strong style="mso-bidi-font-weight: normal;"> <span style="font-family: "Times New Roman"; font-size: 8pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-language: AR-SA; mso-ansi-language: EN-GB; mso-fareast-language: EN-US;" lang="EN-GB"> <span style="mso-tab-count: 1;">                </span>Key Words </span> </strong> <span style="font-family: "Times New Roman"; font-size: 8pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-language: AR-SA; mso-ansi-language: EN-GB; mso-fareast-language: EN-US;" lang="EN-GB">: <span style="mso-spacerun: yes;">  </span> </span> <em> <span style="font-family: "Times New Roman"; font-size: 8pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-no-proof: yes;" lang="EN-US">Biosorption, Wastewater, Cu ion, Kinetic, </span> </em> </p> <p> <em> <span style="font-family: "Times New Roman"; font-size: 8pt; mso-fareast-font-family: ’Times New Roman’; mso-bidi-language: AR-SA; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-no-proof: yes;" lang="EN-US">               Saccharomyces cerevisia. <span style="mso-spacerun: yes;">     </span> </span> </em> </p>}, number={3}, publisher={Gazi University}