Adsorption of Heavy Metal Ion from Aqueous Single Metal Solution by Aminated Epoxy-Lignin

Abstract

This study investigated the adsorption of the heavy-metal ions Cu(II) and Pb(II) onto a lignin derivative. The lignin derivative was obtained by treating bagasse soda lignin with epichlorohydrin, and subsequently grafting an amine functional group by the Mannich reaction. The morphology of aminated epoxy-lignin was a layered structure with pores characterized by SEM. The heavy-metal ion adsorption data could be described well with the pseudo-first order model for Pb(II) ion and the pseudo-second order model for Cu(II) ion; diffusion was found to be the rate-limiting step when approaching equilibrium. FTIR spectroscopy was used to study the mechanism of heavy-metal adsorption by the derivatized lignin. The results show that the sites for adsorption are related to hydroxyl and amido groups.

Use of aminated hulls of sunflower seeds for the removal of anionic dyes from aqueous solutions

“…Amination of polysaccharides is often preceded by polysaccharide activation with epichlorohydrin which enriches the material in epoxide groups that easily attach amines via addition (Liu et al 2013;Razavi and Akhlaghinia 2015;Abdollah et al 2014).…”

Copper (II) Removed from Aqueous Solutions by Aminated Bagasse Pith

“…However, there is seldom study on the modified pith and its adsorption for heavy metal ions removal. In the previous, we found the cellulose and lignin, the main constituents of bagasse pith, could be modified to be good ions adsorbents [15].…”

Effects of Lignin on Root Activity and Soil Nutrients of <i>Malus hupehensis</i>. var. <i>pingyiensis</i> under the Use of Organic Fertilizer

“…Lignin regulated non-organic nitrogen release, benefited the soil N supplying and the N and P uptake, increased the growth and quality of plant and reduced the soil pollution [5] [6]. Lignin has also the absorption capacity of heavy metal ion such as Cu 2+ , Pb 2+ , Hg 2+ , Cd 2+ [7] [8] and the high antioxidant capacity [9]. Therefore, how to effectively use lignin is an important hot problem.…”