Removal of Copper(II) from Aqueous Solution by Pre-treated Saccharomyces cerevisiae

Authors : Ayşe TOSUN

Pages : 63-70

View : 10 | Download : 0

Publication Date : 2016-01-06

Article Type : Other Papers

Abstract :Normal 0 21 false false false TR X-NONE X-NONE The biosorption of copperinsert ignore into journalissuearticles values(II); ions from aqueous solution by dead S. cerevisiae treated with methanol, ethanol and sodium hydroxide was investigated. Batch experiments were conducted to investigate the key parameters affecting the biosorption capacity of S. cerevisiae for copper ion. Removal efficiency of biosorbents was studied as a function of pH insert ignore into journalissuearticles values(2–5);, temperature insert ignore into journalissuearticles values(20–40 °C);, initial copper ion concentration insert ignore into journalissuearticles values(20–120 mg/L);, biosorbent dose insert ignore into journalissuearticles values(0.5 – 5 g/L);, and contact time insert ignore into journalissuearticles values(0–120 min);. Maximum biosorption capacity of 11.6 mg/g for the untreated younger cell was observed at pH of 5.0 and at 50 °C with a biosorbent dose of 3 g/L and copper ion concentration of 75 mg/L. The highest metal uptake value insert ignore into journalissuearticles values(17.7 mg/g); was obtained by sodium hydroxide treated yeast. Desorption studies showed that Cuinsert ignore into journalissuearticles values(II); ions could be removed from the biomass with EDTA insert ignore into journalissuearticles values(ethylenediaminetetraacetic acid); easily and the regenerated biomass could be reused repeatedly without any significant loss in its effectives. st1\:*{behavior:urlinsert ignore into journalissuearticles values(#ieooui); } /* Style Definitions */ table.MsoNormalTable {mso-style-name:`Normal Tablo`; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:``; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:`Times New Roman`,`serif`;}
Keywords : Biosorption, Copper, Saccharomyces cerevisiae, Wastewater, Removal