Enhanced Cu (II) Adsorption from Aqueous Solutions by Sawdust (Quercus mongolica) Pretreated by Ionic Liquid-Water Mixture

Abstract:

This work investigated the feasibility of Quercus mongolica sawdust pretreated by an ionic liquid-water mixture as a biosorbent for Cu (II) removal from aqueous solutions. Maximum Cu (II) biosorption of 32.6 mg/g is obtained at initial pH 4.3 using sawdust pretreated by a 1-butyl-3-methylimidazolium chloride ([C₄miCl)-water mixture (IL content 60%) at 90oC, which is higher than that of unpretreated sawdust (23.0 mg/g, initial pH 6.1). The proposed method is effective in enhancing adsorption capacity of the biomass in comparison to the conventional methods using sulfur acid or sodium hydroxide solutions.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 1354-1357
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.1354
• Online since: August 2013
• Authors: Ning Ning Ma, Peng Wei, Li Gang Wei, Ying Chong Ma, Kun Lan Li, Kun Feng, Ying Qi Wang
• Keywords: Adsorption, Cu(II), Ionic Liquid (IL), Pretreatment, Sawdust, Water

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