caa a22 4500 606195955 CHVBK 20210128100922.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10934-015-0003-0 doi (NATIONALLICENCE)springer-10.1007/s10934-015-0003-0 Zeolite X/chitosan hybrid microspheres and their adsorption properties for Cu(II) ions in aqueous solutions [Elektronische Daten] [Chen Lu, Shuang Yu, Tong Yao, Changfeng Zeng, Chongqing Wang, Lixiong Zhang] The preparation of zeolite X/chitosan (CS) hybrid microspheres for efficient removal of Cu(II) ions by an impregnation-gelation-hydrothermal synthesis technique is reported here. Characterizations by various techniques indicate that the microspheres show porous structures and intimate interaction between zeolite and CS. The adsorption experiments are performed to evaluate the adsorption capacity of zeolite X/CS hybrid microspheres and comparisons are made with binderless zeolite X microspheres, pure CS microspheres and mechanical mixed zeolite X/CS microspheres. The effects of Cu(II) solution concentration and the pH are investigated. The results indicate that zeolite X/CS hybrid microspheres with the zeolite content of 60wt% show the highest adsorption capacity, which is 90mg/g at the initial Cu(II) concentration of 10mg/L and 150.4mg/g at Cu(II) concentration of 500mg/L. The adsorption capacity increases with increasing initial pH and reaches a maximum at pH 5.5 in the range of 0-6.0. The equilibrium adsorption data are well described by the Langmuir isotherm model, exhibiting a maximum adsorption capacity of 152.0mg/g, and the kinetic data are well fitted with the pseudo-second-order equation. Complete removal of Cu(II) ions can be obtained even at very low concentrations. The microspheres show high adsorption capacity and efficiency for Cu(II) ions, exhibiting potential practical application in the treatment of water pollution of heavy metal ions. Springer Science+Business Media New York, 2015 Adsorption nationallicence Zeolite X/chitosan hybrid microspheres nationallicence Cu(II) ions nationallicence Complete removal nationallicence Lu Chen State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut Yu Shuang State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut Yao Tong State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut Zeng Changfeng State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut Wang Chongqing State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut Zhang Lixiong State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/5(2015-10-01), 1255-1263 1380-2224 22:5<1255 2015 22 10934 https://doi.org/10.1007/s10934-015-0003-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-0003-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lu Chen State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Yu Shuang State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Yao Tong State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Zeng Changfeng State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Wang Chongqing State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Lixiong State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemistry and Chemical Engineering, Nanjing Tech University, 210009, Nanjing, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/5(2015-10-01), 1255-1263 1380-2224 22:5<1255 2015 22 10934