1-aza-18-crown-6 ether tailored graphene oxide for Cs(I) removal from wastewater
Author:
Liu Peng12, Shen Zhuang2, Cheng Jiaxian1, Han Zhen1, Xu Wenda3, Ji Mingbo12, Ma Fuqiu12
Affiliation:
1. Yantai Research Institute and Graduate School, Harbin Engineering University , Yantai 264006 , China 2. College of Nuclear Science and Technology, Harbin Engineering University , Harbin 150001 , China 3. Yantai Standard Metrology Inspection & Test Center, National Steam Flowrate Measurement , Yantai 264000 , China
Abstract
Abstract
Due to the relative abundance, long half-life and high mobility of radioactive cesium (Cs), new adsorbents are urgently needed to treat Cs to ensure public health. In this study, a graphene oxide (GO) based adsorbent for Cs(I) adsorption was prepared by 1-aza-18-crown-6 ether modification. XRD, FT-IR, XPS and SEM results showed that the properties of 1-aza-18-crown 6 ether modified GO (18C6-GO) changed dramatically compared with that of raw graphite. The adsorption properties of 18C6-GO for Cs(I) were studied by batch static adsorption experiments. The results showed that the adsorption equilibrium time of 18C6-GO was 20 h. Kinetic study revealed that the adsorption rate of Cs(I) conformed to pseudo-second-order kinetic model. Langmuir adsorption isotherm simulation indicated that the adsorption arises at homogeneous adsorption sites on 18C6-GO. Therefore, crown ether modified GO may have implications for the treatment of wastewater.
Funder
Yantai Science and technology planning project University and Local Integration Development Project of Yantai Academic-Industry Partnership Fund Yantai New Growth Drivers Fund
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry
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