title: Recovery of uranium(vi) from aqueous solutions using a modified honeycomb-like porous carbon material.
abstract: Researchers have focused their attention on environment-friendly adsorption materials to solve the energy shortage problem and guarantee the sustainable development of human society. For that matter, pomelo peel, which is a low-cost and universal biomass waste, can be used as an effective carbon source with a large specific surface area. In this paper, a novel composite adsorbent, consisting of a three-dimensional honeycomb-like porous carbon material and MnO2nanowires (HLPC/MnO2), has been successfully synthesized using alkaline activation followed by a carbonization procedure at high temperatures and in situ growth of MnO2nanowires. The as-prepared composite was characterized using XRD, FT-IR, XPS, SEM, TEM and BET. The surface area of the HLPC reached 1147.41 m2g-1. The results of the adsorption experiments show that the highest adsorption value of the HLPC/MnO2composite was 238.09 mg-U per g-adsorbent at pH 5. The thermodynamic and kinetic parameters demonstrate that the removal process correlates well with a Langmuir adsorption isotherm model and pseudo-second-order kinetic model. Thus, the HLPC/MnO2composite is an excellent adsorbent for removing uranium(vi) ions from aqueous solutions.
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Jiahui
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Zhanshuang
authors.initials: Z
authors.lastname: Li
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Jingyuan
authors.initials: J
authors.lastname: Liu
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Hongsen
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com.
authors.forename: Rumin
authors.initials: R
authors.lastname: Li
authors.affiliation: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China. zhqw1888@sohu.com and Institute of Advanced Marine Materials, Harbin Engineering University, 150001, ChinacInstitute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.affiliation: Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia.
authors.forename: G A
authors.initials: GA
authors.lastname: Emelchenko