Adsorption of Pb(II) and Cd(II) Ions Onto Dye‐Attached Sawdust. Issue 4 (15th January 2016)

• Record Type: Journal Article
• Authors: Tekin, Kubilay; Akalin, Mehmet K.; Uzun, Lokman; Karagöz, Selhan; Bektaş, Sema; Denizli, Adil
• Is Part Of: Clean. Volume 44:Issue 4(2016:Apr.)
• Page Start: 339
• Page End: 344
• Publication Date: 2016-01-15
• Subjects: Adsorption capacity -- Biomass -- Environmental chemistry -- Heavy metals; Water quality -- Periodicals; Water -- Pollution -- Periodicals; Pollution -- Periodicals; Bioremediation -- Periodicals; Sewage -- Periodicals; Water chemistry -- Periodicals; 333.7205
• DOI: 10.1002/clen.201500222
• Languages: English
• ISSNs: 1863-0650

Abstract

Abstract : 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 15 min. The Langmuir isotherm was better fitted than the Freundlich isotherm for both metal ions. The maximum capacities of the monolayer adsorption were 56 μmol/g for Pb(II) and 72 μmol/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. Abstract : Lignocellulosic materials are inexpensive adsorbents and they are readily available in comparison with synthetic polymers. The materials developed in this study provide an economical and easily accessible adsorbent for the removal of heavy metal ions and are promising alternatives to natural or synthetic polymers.