title: Removal of Cu(II) from aqueous solution using synthetic poly(catechol-diethylenetriamine-p-phenylenediamine) particles.
abstract: A novel poly(catechol-diethylenetriamine-pphenylenediamine)(PCEA) adsorbent was synthesized in methanol, with chelating groups supplied by catechol and diethylenetriamine, which showed a strong removal performance and efficient adsorption toward Cu(II) ions in aqueous solution. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Besides, factors such as adsorbent dosage, pH, initial ionic and metal concentrations, contact time, and temperature on the adsorption of Cu(II) were studied. The data revealed that the adsorption followed a pseudo-second order kinetic model and the adsorption rate was influenced by the intra-particle diffusion. Furthermore, the adsorption process followed the Langmuir isotherm model, and the maximum adsorption capacity (Qm) was 44.2mg/g at 298K in simulated wastewater. The value of ΔG (kJ/mol) and ΔH (kJ/mol) also demonstrated that the adsorption process was spontaneous and endothermic. Studies revealed that PCEA particles were powerful and stable for the removal of Cu(II) in water, and it could be directly applied to the Cu(II)-contaminated water.
authors.affiliation: School of Materials Science and Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China. Electronic address: liuqinze@qlu.edu.cn.
authors.forename: Qinze
authors.initials: Q
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Zining
authors.initials: Z
authors.lastname: Ruan
authors.affiliation: School of Materials Science and Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Chang
authors.affiliation: School of Materials Science and Engineering, Qilu University of Technology, Jinan 250353, People's Republic of China.
authors.forename: Jinshui
authors.initials: J
authors.lastname: Yao
mesh_terms: D000327:Adsorption; D002396:Catechols / Q000737:chemistry*; D002614:Chelating Agents; D003300:Copper / Q000302:isolation & purification*; D004305:Dose-Response Relationship, Drug; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D008962:Models, Theoretical; D010655:Phenylenediamines / Q000737:chemistry*; D011073:Polyamines / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D013816:Thermodynamics; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D002396:Catechols; D002614:Chelating Agents; D010655:Phenylenediamines; D011073:Polyamines; D014874:Water Pollutants, Chemical; C005391:diethylenetriamine; D014867:Water; D003300:Copper; C034221:catechol; C029728:4-phenylenediamine
keywords: Adsorption; Chelating group; Cu(II); Water treatment