Synthesis of chelating polyamine fibers and their adsorption properties for nickel(ii) ions from aqueous solution. Issue 64 (18th August 2017)

• Record Type: Journal Article
• Authors: Cui, Jianlan; Li, Yanru; Meng, Jian; Zhong, Congsan; Wang, Peng
• Is Part Of: RSC advances. Volume 7:Issue 64(2017)
• Page Start: 40392
• Page End: 40400
• Publication Date: 2017-08-18
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra06935a
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In this work, a novel fibrous material PA–PVAF has been prepared. In the adsorption experiments of Ni(ii ), the fibrous material PA–PVAF showed excellent adsorption performance, which can be used as a promising adsorbent. Abstract : A novel fiber supported adsorbent PVAF- g -PEI was first developed by grafting polyethylenimine on polyvinyl alcohol fibers (PVAF). In order to increase the nickel(ii ) adsorption capacity of PVAF- g -PEI, they were chemically modified with amine-rich reagent tetraethylenepentamine by using a crosslinker, glutaraldehyde (GA). The effect of grafting reaction parameters was investigated. The prepared fiber sorbent PA–PVAF was characterized by using FT-IR, SEM, XPS and element analysis and used for the adsorption of nickel(ii ) from aqueous solutions. The factors influencing nickel(ii ) adsorption on PA–PVAF, such as contact time, solution pH, temperature and ionic strength, were also studied. At pH 7.0, the sorption capacity of PA–PVAF was 91.03 mg g −1 for nickel(ii ). The Langmuir isotherm model precisely explained the equilibrium data. Adsorbent–adsorbate kinetics were pseudo second order. Meanwhile, the adsorption–desorption cycle experiments showed that PA–PVAF had good reuse performance.