Radiation synthesis of spherical cellulose-based adsorbent for efficient adsorption and detoxification of Cr(VI). (September 2016)

• Record Type: Journal Article
• Authors: Dong, Zhen; Zhao, Jing; Du, Jifu; Li, Cancan; Zhao, Long
• Is Part Of: Radiation physics and chemistry. Volume 126(2016:Sep.)
• Page Start: 68
• Page End: 74
• Publication Date: 2016-09
• Subjects: Spherical cellulose -- Radiation synthesis -- Adsorption -- Detoxification; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2016.05.013
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: Spherical cellulose-based adsorbent (2-AMPR) with 2-aminomethyl pyridine was synthesized by radiation method. The adsorption behaviors of 2-AMPR for Cr(VI) removal were evaluated through batch and column experiments. The results presented that the adsorption kinetics well obeyed pseudo-second-order mode and the adsorption isotherm of Cr(VI) followed the Langmuir model with adsorption capacity of 209.6 mg/g at optimal pH 2.0. Dynamical experiments revealed that the 2-AMPR could selectively and simultaneously separate and detoxify trace amount of Cr(VI) even from simulated electroplating wastewater including high concentration of Cu(II), Ni(II) and Zn(II) ions. Additionally, FTIR and XPS analysis verified that part of Cr(VI) was reduced to Cr(III) during adsorption process by adsorption–reduction mechanism. Graphical abstract: Highlights: Spherical cellulose-based adsorbent was synthesized by radiation method. Adsorption of Cr(VI) onto 2-AMPR proceeded by adsorption–reduction mechanism. 2-AMPR could selectively and simultaneously separate and detoxify trace Cr(VI). 2-AMPR loading Cr(VI) was easily regenerated by eluting using 1 mol/L NaOH. 2-AMPR can be employed as an adsorbent for Cr(VI) removal in practical application.