title: Adsorption behavior of modified Iron stick yam skin with Polyethyleneimine as a potential biosorbent for the removal of anionic dyes in single and ternary systems at low temperature.
abstract: The skin of Iron stick yam (ISY) was modified with Polyethyleneimine (ISY@PEI) and evaluated for use as a potential biosorbent to remove the anionic dyes Sunset yellow (SY), Lemon yellow (LY), and Carmine (CM) from wastewater under low temperature conditions (5-15°C) in single and ternary dye systems. Both in the single and ternary systems, experimental data showed that adsorption capacity reached the highest value at 5°C, and adsorption capacity decreased when the temperature increased (10-50°C). The equilibrium data fitted very well to the Langmuir model and the extended Langmuir isotherm, for the single and ternary systems, respectively. The maximum adsorption capability was 138.92, 476.31, and 500.13mg/g for LY, SY, and CM, respectively, in a single system and 36.63, 303.31, and 294.12mg/g for LY, SY, and CM, respectively, in a ternary system. The adsorption followed pseudo-second-order kinetics. The thermodynamic parameters indicated that it was a spontaneous and exothermic process.
authors.affiliation: The College of Architecture and Civil Engineering, The Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China. Electronic address: 83995983@qq.com.
authors.forename: Yan-Zhuo
authors.initials: YZ
authors.lastname: Zhang
authors.affiliation: The College of Architecture and Civil Engineering, The Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhao
authors.affiliation: The College of Architecture and Civil Engineering, The Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Bian
authors.affiliation: The College of Architecture and Civil Engineering, The Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Li
authors.affiliation: The College of Architecture and Civil Engineering, The Key Laboratory of Beijing for Water Quality Science & Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
authors.forename: Xiu-Jie
authors.initials: XJ
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D000838:Anions; D003080:Cold Temperature; D004396:Coloring Agents / Q000737:chemistry / Q000302:isolation & purification*; D004058:Diffusion; D027742:Dioscorea / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D011094:Polyethyleneimine / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D000838:Anions; D004396:Coloring Agents; D014874:Water Pollutants, Chemical; D011094:Polyethyleneimine
keywords: Adsorption; Anionic dyes; Low temperature; Modified Iron stick yam skin; Polyethyleneimine