Adsorption of Pb(II) and Cd(II) Ions Onto Dye-Attached Sawdust

作者：Tekin Kubilay^*; Akalin Mehmet K; Uzun Lokman; Karagoz Selhan; Bektas Sema; Denizli Adil

来源：Clean-Soil Air Water, 2016, 44(4): 339-344.

DOI：10.1002/clen.201500222

• Adsorption capacity
• Biomass
• Environmental chemistry
• Heavy metals

Sawdust from Pinus sylvestris was modified with Cibacron Blue F3GA. The dye was attached to the sawdust through a chemical reaction under alkaline conditions. The modified sawdust was then used to evaluate the adsorption of Pb(II) and Cd(II) ions by investigating the effects adsorption time, pH and metal ion concentration. Adsorption rates were rapid and reached equilibrium after 15min. The Langmuir isotherm was better fitted than the Freundlich isotherm for both metal ions. The maximum capacities of the monolayer adsorption were 56 mu mol/g for Pb(II) and 72 mu mol/g for Cd(II). Adsorption-desorption studies showed that Cibacron Blue F3GA-attached sawdust from P. sylvestris can be used repeatedly to adsorb heavy metal ions without significant loss of adsorptive capacity.

• 出版日期2016-4