title: Efficient and selective adsorption of multi-metal ions using sulfonated cellulose as adsorbent.
abstract: Contamination of heavy metal in wastewater has caused great concerns on human life and health. Developing an efficient material to eliminate the heavy metal ions has been a popular topic in recent years. In this work, sulfonated cellulose (SC) was explored as efficient adsorbent for metal ions in solution. Thermo gravimetric analyzer (TGA), X-ray diffraction (XRD) and Fourier-transform infrared spectrometer (FTIR) first analyzed the characterizations of SC. Subsequently, effects of solution pH, adsorbent loading, temperature and initial metal ion concentration on adsorption performance were investigated. The results showed that sulfonated modification of cellulose could decrease the crystallinity and thermostability of cellulose. Due to its excellent performance of adsorption to metal ions, SC could reach adsorption equilibrium status within as short as 2min. In multi-component solution, SC can orderly removes Fe(3+), Pb(2+) and Cu(2+) with excellent selectivity and high efficiency. In addition, SC is a kind of green and renewable adsorbent because it can be easily regenerated by treatment with acid or chelating liquors. The mechanism study shows that the sulfonic group play a major role in the adsorption process.
authors.affiliation: College of Graphic Communication and Packaging, Qilu University of Technology, Jinan, 250353, China; Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science & Technology, Tianjin, 300457, China. Electronic address: xiaodong771111@163.com.
authors.forename: Cuihua
authors.initials: C
authors.lastname: Dong
authors.affiliation: College of Graphic Communication and Packaging, Qilu University of Technology, Jinan, 250353, China. Electronic address: zfl363@126.com.
authors.forename: Fulong
authors.initials: F
authors.lastname: Zhang
authors.affiliation: College of Graphic Communication and Packaging, Qilu University of Technology, Jinan, 250353, China. Electronic address: zhiqiang8505@126.com.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Pang
authors.affiliation: College of Graphic Communication and Packaging, Qilu University of Technology, Jinan, 250353, China. Electronic address: ygh2626@126.com.
authors.forename: Guihua
authors.initials: G
authors.lastname: Yang
mesh_terms: D000327:Adsorption; D000476:Alkanesulfonates / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D000476:Alkanesulfonates; D002482:Cellulose; D007477:Ions; D019216:Metals, Heavy; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Adsorption; Desorption; Metal ions; Removal efficiency; Sulfonated cellulose