title: Graphene oxide/chitin nanofibril composite foams as column adsorbents for aqueous pollutants.
abstract: A novel graphene oxide/chitin nanofibrils (GO-CNF) composite foam as a column adsorbent was prepared for aqueous contaminant disposal. The structures, morphologies and properties of composite foams supported by nanofibrils were characterized. As a special case, the adsorption of methylene blue (MB) on GO-CNF was investigated regarding the static adsorption and column adsorption-desorption tests. Results from equilibrium adsorption isotherms indicated that the adsorption behavior was well-fitted to Langmuir model. The composite foams reinforced by CNF were dimensionally stable during the column adsorption process and could be reused after elution. The removal efficiency of MB was still nearly 90% after 3 cycles. Furthermore, other inorganic or organic pollutants adsorbed by composite foams were also explored. Therefore, this novel composite foam with remarkable properties such as dimensional stability, universal adsorbent for cationic pollutants, high adsorption capacity, and ease of regeneration was a desirable adsorbent in the future practical application of water pollutant treatment.
authors.affiliation: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China.
authors.forename: Zhongshi
authors.initials: Z
authors.lastname: Ma
authors.affiliation: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China. Electronic address: dagang@nuist.edu.cn.
authors.forename: Dagang
authors.initials: D
authors.lastname: Liu
authors.affiliation: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Zehui
authors.initials: Z
authors.lastname: Li
authors.affiliation: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Nanjing University of Information Science and Technology, Nanjing 210044, China.
authors.forename: Zhenxuan
authors.initials: Z
authors.lastname: Li
authors.affiliation: Department of Materials Science and Engineering, Beijing Technology and Business University, Beijing 100048, China.
authors.forename: Huafeng
authors.initials: H
authors.lastname: Tian
authors.affiliation: Fujian Provincial Key Laboratory of Polymer Materials, College of Material Science and Engineering, Fujian Normal University, Fujian 350007, China.
authors.forename: Haiqing
authors.initials: H
authors.lastname: Liu
mesh_terms: D000327:Adsorption; D002686:Chitin / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D055595:Mechanical Phenomena; D053761:Nanocomposites / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D010087:Oxides; D014874:Water Pollutants, Chemical; D014867:Water; D002686:Chitin; D006108:Graphite
keywords: Chitin nanofibrils; Column adsorption; Composite foam; Graphene oxide